I have a 1997 Chrysler Sebring Jx Convertible with 150k miles on it, and for as long as I can remember sometimes my car would cut off and I would have to crank it back up before leaving home/wherever I was. Yeah i .notice on 92.paseo my.car was.eating.alot.of.gas so.tomorrow morning going.to.change.it. It is currently in the shop getting looked at. 2) Fuel Injector amzn_assoc_ad_mode = "manual"; ths mechanic in garland tx name Charlie Reeves is the biggest crook of all time. i had two mechanic tell me this BEFORE i let the diagostics done…. The flashing light indicates that an error code is being sent from the central engine management computer – the best way to diagnose the error is to have a FC scanner connected to the vehicle. It can provide a better and smoother ignition system working for your car. Worn spark plugs create extra work for your engine. Hope this helps out. If they are keeping clean then leave them be. You could possibly get better performance out of better coils and plugs but even those numbers are pretty minimal. Fix: I replaced the EGR valve. Many people put their car not starting down to being out of fuel or having a flat battery. I keep a record of all the work I personally do on my website and im hoping to teach new comers on how they can save money repairing there car on there own. Why choose NGK Iridium Spark Plugs [VIDEO], When to change spark plugs (6 tell tale signs), Contact your nearest Repco Authorised Service centre, Motoring About – Heading For A Boil Over? Do u think its the spark plugs (Bending them gently in a loop will make the cracks very visible.) Now is hesitates when going slowly up my driveway, and the engine light is now on…What should I do next? Spark plugs are some of the crucial parts of any motor vehicle. he calls himself the honest mechanic. It struggles to want to go and feels like it’s mis-firing, usually when driving it will clear up and go, but still have the idle fluctuation when at a red light or other times won’t. If you’re not able to change the spark plugs yourself, it’s time to get your vehicle in for its next service. It is associated with the ignition and works through distributing current from the ignition to the engine. Wonder what is the benefit of changing it? The good news is that there are parts available for this year model jeep, and second, it all required very little labor to achieve the “Fix”. please check out my site and let me know if im heading in the right direction, http://beatthemechanic.com/changing-your-spark-plugs/. Better fuel economy! IS THERE A WAY/TRICK TO FINDING OUT,BEFORE I GO OFF AND SPEND ALOT OF MONEY ON THE ONE THAT IS STILL WORKING? If your vehicle is accelerating poorly it is fairly easy to tell. mechanics these days are crooks….i dont trust none of them. Have a 2002 Bravada and it doesn’t speed up right away and now when I start it, the rpms and battery voltage thing goes up and down. I have pontiac g6 my car has start to skip, jerk, shake in front and cuts off when start driving but it still cranks.is it spark plugs, this is the same issue I started having , my spark plugs and wires were coated with oil that it was burning. can anybody help me please.. yesterday id just started driving my car when the steering started juddering quite badly.. In a system like this, the spark plugs need to fire two times. Limit your maintenance time. It is also possible that faulty spark plugs are causing your battery to drain. What sort of car is it and is the check engine light on ? Changing the spark plugs along with the ignition coil is a good idea. Something seriously wrong with your PCM/EGR. when I started the car up it was still juddering and the engine management light is still coming straight on.. its not flashing its on constant. Suffice to say, it is essential to replace your spark plugs regularly. amzn_assoc_search_bar = "true"; Anyone can help me….and when i accelerating. I have a 97 Acura TL. A cold plug has a shorter insulator nose length—the distance from tip to spark plug shell—and transfers heat rapidly from its firing tip to the cylinder head water jacket. amzn_assoc_tracking_id = "loaded100-20"; Misfires caused by worn spark plugs will cause older vehicles to buck, stall, … can also make you stall. 5 Benefits of Changing Your Air Filter. Fully functioning spark plugs equate a fully functioning combustion system. Cookies help us deliver our Services. My engine would cut off every once in a while for a split second while driving and continue again no problem, always rode smoothly besides that. No check engine light… Got my alternator tested and it went 3 for 3 so all that is good. On certain vehicles, it sometimes makes good sense to perform additional maintenance at the same time, doing the valve cover gaskets will be beneficial if at 200 000 kms. amzn_assoc_ad_type = "smart"; Since Iridium Plugs ensure excellent ignition, the gasoline is burned efficiently. Bumper to Bumper Radio, the car guys on KTAR, 92.3 FM in Phoenix, AZ, broadcast every Saturday from … I have a 1978 Ford high boy it had the rough idle then one day I went to go fire it up it ran for a bit then it had a spit pop out the carb and died and now it won’t even fire with starting fluid would the be the sparkies or distributer or just a bad carb?? My issue is on my way home yesterday from college I completely lost my ability to accelerate and started losing speed, pulled over and my car cut off. I was told I need new spark plugs, but is it true that the cost depends on how hard the spark plugs are to reach? manny I have a 1999 Chevy S10ls extend cab, 4 cylinder and my truck is hard to start in a parking lot getting ready to leave. amzn_assoc_marketplace = "amazon"; Spark plugs are an integral part of your vehicle’s motor as they provide the much needed spark that ignites the air and fuel mixture within the cylinders. Real back on the right side) Any suggestions on what to look for? No i let it sit and run for a a few minute. level 1 Below, Allen Samuels Auto Group has included a list of reasons why your spark plugs should be replaced at the proper intervals. How the Rules Have Changed for Sparkplugs in your Vehicle. Some MB cars may require spark plugs changed every 40,000 while others 60,000 or 80,000. This continuous ignition is what keeps your car moving on the road. HOW CAN I FIND OUT WHICH IS THE ONE THAT NEEDS REPLACEMENT?? For example, at idle, say 800 rpm, the spark will fire 200 times per minute in a 4-cylinder, 2.0-liter engine. Eventually, it could be so off-timing that the engine will not run smoothly or at all. I am also interested in degreasing the engine area. I have a 95 cadillac eldorado and it sort of jumps up and down 2-300 rpm`s at low speed.Spark plugs? By using our Services or clicking I agree, you agree to our use of cookies. What sort of car are you talking about here? MY 2003 CHEVY SILVERADO 1500 WILL NOT START,THE RADIO,HEADLIGHTS,AC/HEAT ALL WORKS FINE BUT ENGINE WILL NOT START,I HAVE BOUGHT A NEW BATTERY CHANGED SPARK PLUGS & WIRES AND STILL NO LUCK,I AM GUESSING IT IS EITHER MY ALTERNATOR OR MY STARTER,BUT DONT KNOW WHICH ONE IS THE ONE GIVING ME THE PROBLEM! Changing spark plugs could be a good idea when… 1. 4. how do you know what is number one spark plugs on bmw 2003. is this the reason why the rpm on my car goes down to 500 rpms and the air filter vibrates also? With cars of that earlier era spark plug wires were a common poor-running problem. You are misfiring continue to drive or run with flashing light will cause damage, shut off, wait for about 15 mins and see what happens, if continues, tow to mechanic you trust. My van is shaking a lot when excellorating and it has a really tough idle when stopped. Cold plugs are ideal for high rpm engines, forced induction applications, and other instances where the … PLEASE HELP!! I stopped and could smell burning and then the engine management light came on.. Tranny fluid is right where it should be and oil too, I just re-read your post and realized the comment regarding the dash lights going out. The double platinum spark plugs are better for vehicles which have a waste spark system as their distributor ignition system. I would check your fuel filter. Below are six signs for when to change your spark plugs: amzn_assoc_placement = "adunit0"; I had let the oil get low but hadn’t had a signal from my car that my oil was low.. One possibility you may overlook is having bad or worn spark plugs. 1) Long Lifespan. The first time is for the cylinder of the compression stroke. At first they said they thought it was my alternator, but after getting it cranked up they said it may be my spark plugs. Never use other brand than recommended. After that it would crank up but shake violently and then cut off. I have a small oil leak and have tried to maintain it by cleaning the manifold regularly until I can put it in the shop to have the gasket cover replaced (which is what I determined is where the leak is. It can also feel as if your vehicle is trying really hard to pull itself along. When in Idle it struggles and RPMS fluctuate up and down and has only gone so low twice to shut off. thanks. amzn_assoc_asins = "B00L3XGGDS,B00L3XGGJ2,B00IM39A6M,B003BUCKQ8"; Your engine idles when it is a stationary and in this position the engine normally produces around 1000rpm. could it still be the spark plugs?! The misfires that may occur will increase exhaust emission as well as harm gas mileage. When your engine misfires it causes the vehicle to halt for a fraction of a second and then continues it’s usual movement. Below are the top 3 benefits of iridium spark plugs. This article does a pretty decent job at explaining what benefits running a colder plug might be. now just a few months later its misfiring again. Also, the car is coding that my cam and crankshaft sensors are misaligned, but I doubt it’s a timing issue at 37K…Thinking it’s a coil issue because the car idles roughly when I turn the A/C on. The truck has new TCC solenoids, fuel filter, air filter, oil filter fuel pump is new from a couple of years, new TPS, IAC is new, throttle body is cleaned and still sluggish at times. Spark plugs can become fouled which often times result in … In complete darkness, let engine run and look. probably be the starter. THanks for the info, it was very helpful, guess i need new spark plugs then. Changing plugs on most newer cars can be a … Anyway, thank you so much for sharing this. I would check plugs and wires. The continued use of the spark plug is bound to render them less useful after some time. New Bosch spark plugs will lead to: Consistent production of optimal combustion. This benefit occurs because you have an improved ignition profile that allows your fuel to burn more efficiently. Do you need to replace coils when replacing spark plugs ? If spark plugs are not checked with regular services, cleaned or changed when necessary, they can cause problems to occur with the vehicle’s engine. In addition to avoiding some of the issues listed above, there are other benefits that can come from regularly changing your spark plugs. Changing out your spark plugs offers quite a few benefits. You will see if there is crossfire from spark plug wires or coil. Could the spark plugs be the problem? Does this happen when your idle or moving ? One mechanic days alternator, the other says it’s probably my cars “brain” is fried. do you check it often? The big expense was the EGR Valve $99 and OXYGEN sensor $55. 1987 Acura Integra 158k I believe it still has the original Spark Plug wires - car runs fine. dude you need to take to a dealer or shop to get it off of limp mode! So I cleaned them off with a rag. E mail me. Tis the season for tune-ups, my friends! I hope this helps. What is a fair price? (Jeep takes exactly 4 1/4 Quarts of oil including the oil filter.) thetenofus@yahoo.com, I have a 2000 buick lasbre i got the cat a year ago never a tune up i changed one coil pack but somrone told me change the spark plugs and wires my light was flashing fast and its jumping. I have a 1999 Oldsmobile Delta 88 LS. When to change spark plugs (6 tell tale signs) Spark plugs are an integral part of your vehicle’s motor as they provide the much needed spark that ignites the air and fuel mixture within the cylinders. First off I had issue with knocking valves when starting specially in very cold weather. My car battery keeps dying. [Video], Motoring About – Catalytic Converter and Exhaust [Video], Motoring About – What’s the Diff? Best thing to do is run the stock plugs, and check them regularly and see how things are progressing through a 2-5K mile range. Since there is little dispersion in the position of the spark, idling is stable too. Of course, every vehicle on the road will misfire from time to time. However it still idled (less) rough and it was “Hiccuping” or (Misfiring)at 40 50 and 60 miles per hour. (Hot weather 10w40 oil) How much do new spark plugs improve MPG? I just took my car to get it smoged. We suggest that you replace the spark plugs every four years for best performance and fuel economy. 3 1/4 Quart of 5w30 oil, (not 10w40) and one Quart of RIZLONE OIL . amzn_assoc_title = "Recommended Spark Plugs"; amzn_assoc_region = "US"; 125 thousand miles 25 years old. If i add that last 6th spark plug will it make a BIG DIFFRENCE? 01 mustang starts jerking at 40-50mph at 1500 rpm. '02 GTI. New spark plugs provide a lot of other performance benefits as well. how much does it cost to change spark plugs, do yourself is so much cheaper than getting a mechanic.. wires are twice as cheap than stupid dealer. Daniel, this sounds like a serious problem and you should see a mechanic as soon as you can, otherwise you risk damaging your engine and potentially expensive repairs. The motor star shaking…. Many of my friends used to change the spark plugs by themselves. im so worried and don’t have anybody to help.. please could somebody give me some advice? They are very concerned about the alternator and distributor, and they know that they have to change the oil every 5000 or more miles. My car is 10 years old (but only 51k miles) so is due for changing. I already had a tune up to see if it would fix the problem but the problem still exists. With spark plugs always check your manual period!. When I go uphill, the noise doesn’t get louder, the dash lights go out for a split second. (check engine or Service engine), I have 1990 Jeep Wrangler 4cyl. Took it from Tennessee to California and on the way i had a spark plug blow. he will talk very professional over the phone until he gets your car and then he stops answering your calls and he lies and say your car needs this and that…..he tries to talk about God and thats how he gets you. The combustion within the engine is extremely time sensitive and when the spark plugs deteriorate, that timing changes slightly, causing the combustion cycle to become less efficient. I would take it to a mechanic to further diagnose it. did you drive it right after you cleaned the throttle body? Could it be the spark plugs and if so has it already caused a lot of damage.#, have you checked your battery terminals and battery for age, they are only good for a few years and replace, corrosion can cause battery voltage issues. i have a 06 gs300 and its currently doing that. I have a 97 Ford expedition with 160K on it. [Video]. This tips are 100% correct. 1) Bad wires It is OK when I’m accelerating but when I stop and whole car jumps and it’s like it WA ts to lose power. i have a question in regards to the signs of spark plug changing…i was told by diagnostic mechanic testing that the cam shaft sensors was the problem wih my car jerking/hestiation motiion…after changing them the car is starting to do it again! Knocking stopped instantly when starting in very cold weather. Next I changed the spark plugs,spark plug wired rotor and distributor cap. Any way at this point I would replace the EGR valve about $99 and the Oxygen sensor, about $55.00 What happen when the engine light star flashing 11times? Not sure what is causing this? I have 03 chevy silverado when i put it in drive it wont go any faster than 30mph i have to put it in 2nd gear for it to go the regular speed any idea why it is doing this?? All Repco Authorised Service centres make sure to test all vital components like spark plugs in their safety checks. Thanks for the tips. I’m so confused. Determined it’s one of these: HELP!!! Yes, 105k miles or 10 years, whichever comes soonest. HE GAVE YOU BAD ADVISE. If you want to use spark plugs in your vehicle which will last for the longest time, then you’ll want to use iridium spark plugs. In essence, they’re “not able to effectively burn the fuel” in the combustion chamber. If you’re really daring, you could run your hands around the plug wires and see if you get a heckuva shock. This means the vehicle isn’t functioning as smoothly as it should because one or more cylinders aren’t firing properly, which can also lead to higher amounts of emissions. Here The Doc talks about why you should change spark plugs. The sound the engine gives off is constant and smooth but if your spark plugs aren’t performing as they should, your engine will produce a rough and jittery sound while producing larger vibrations through the car. prbably best to get a diagnostic scan done, 84 Cadillac Seville. my engine (currently in the shop) had manifold gaskets that were breaking down so they are being replaced hopefully that is all that is wrong but I’m told it is NOT going to be a major issue due to the fact that compression is fine. This ‘sluggishness’ can be easily fixed by having the vehicle serviced with a spark plug change. ... and as a result affect the emission control systems of the car causing an incorrect air-fuel mixture and spark plug ignition problems which can lead to serious driveability issues. At current prices, that can cost drivers as much as 94 cents per gallon. A set of eight NGK Iridium plugs correct for the 5.0 engine comes to just north of £100. But I don’t think that it is secure. As for idle, rarely would shake at an idle. Does it click or no? I myself wouldn’t, but YOU can! Contact your nearest Repco Authorised Service centre today to have your car back on the road and working efficiently. 3) Fuel pump. Usually you change both. amzn_assoc_linkid = "f3e45b78525307473fdd10c7385d71a6"; If so you need to have your battery and spark plugs changed as soon as possible. Next issue was rough idle . I had a problem like that as well in my 2001 truck. The warning lights that may be seen on the dashboard regarding spark plugs is a sign that misfires are exceeding a given amount and has caused emissions to dramatically increase. As this process happens, the amount of spark provided decreases, making your engine run badly, causing higher fuel consumption and other problems. In most cases it's a simple job that will help to maintain peak performance and the highest possible gas mileage. might be a compression test, or low oil. First, with the engine off, check the wires for cracks or see if they look all dried out. Not sure what else it could be. should I change the seals and even the gaskets since I am there already, It depends which seals and gaskets you are referring to. The second time is for the cylinder of the exhaust stroke. Not having this checked can lead to costly damage being done. I don’t understand what “Spark Plug Blow Means?” Coil almost never need replacement. What do you guys think. Worn spark plugs or spark plug wires can trigger your check engine light to come on. The spark plug change interval can vary based on spark plug installed and other factors. It mostly sputters when I start accelerating, then when it goes into the next gear. I bought it last May and it ran great. It is estimated that iridium spark plugs will last for at least 60,000 miles. Help please. If so, replace all of them. did you find the problem as far as the jerking when going up the driveway? Now when I started loosing speed (with my foot on the petal) I could see and hear my RPMs going up but no speed whats so ever. Thanks in advance! blow it up, its ford, we had a 2013 fords currently in possible law suit against Ford Motor Co, did you fix the jerking in vehicle because my car is currently doing the same thing. To get back to your vehicle’s optimum level of fuel consumption all you’ll need to do is have your spark plugs changed. I went to two places both said it could stay at 12pmh should I get themChanged. At this point I changed the OXYGEN SENSOR. Sounds like your wires could be arcing. My engine makes a weird noise, and feels like it doesn’t want to go. I had to read the manual so I didn’t try to start again for five minutes. Hey there ive got 92 318i bmw e36 tht has started a ruff idol and is black smoking a lil bit as well as when im driving it misses and wont go over 5 thousand rpm I have given the spark plugs a clean up and they foul up again and its going through heaps of gas ideas would be a great help cheers, sounds like you have a valve issue going on our running rich. Reason 1: New spark plugs help keep your engine at its peak performance and efficiency levels. More than likely overheated. And oh yes, REPLACE YOUR MECHANIC. Have you got a code on your car? I changed 5 spark plugs because my car shakes a bit or it shakes when i accelerate and when i make a stop it also shakes. Spark plugs connect to wires that lead to the ignition system. Already had a signal from my car when the steering started juddering quite badly to.... Engine light star flashing 11times months later its misfiring again it ran great plugs by.! Plugs or even the cable, all went well the light didn t! Jerking at 40-50mph at 1500 rpm times on an Automatic transmission new plugs... The EGR Valve $ 99 and OXYGEN sensor $ 55 efficiency and.... Coil is a way of assuring top efficiency and performance 800 rpm, the vehicle to halt for plug. Plugs offers quite a few benefits the spark plug wires can trigger your check light…... Of a second and then cut off but don ’ t flash anymore and could smell burning then! Replace your spark plugs connect to wires that lead to costly damage being done all went well and is biggest... Its going cut off but don ’ t see any sparking under hood your... The steering started juddering quite badly $ 55 wouldn ’ t even replace a head,. Helps give some insight ps i have 1990 Jeep Wrangler 4cyl is a way of top! Comes soonest distributor cap gas then usual as well as harm gas mileage on the right direction, http //beatthemechanic.com/changing-your-spark-plugs/. Darkness, let engine run and look moving on the way i had the! Was driving fine, till they talked me into changing them completely eliminating the rough idle and no more.. Even the cable, all went well on spark plug change interval can vary based on spark blow! In all gears and i read my manual me some advice went 3 for 3 so that. Get themChanged cost drivers as much as 94 cents per gallon talked me into changing them then. Lexus 95 was driving fine, till they talked me into changing them the.. Time is for the cylinder of the spark needed to get the vehicle moving, then you may overlook having... Maintain peak performance and the light didn ’ t, but you can to! Miles ) so is due for changing a diagnostic scan done, 84 Cadillac.. Them less useful after some time daring, you could run your hands around the plug every. So is due for changing quite badly ], Motoring about – what ’ s usual movement off... 6Th spark plug blow 1: new spark plugs decent job at explaining what benefits running a colder might! Is currently in the right direction, http: //beatthemechanic.com/changing-your-spark-plugs/ functioning combustion system burning and then engine. Including the oil get low but hadn ’ t see any sparking under than. Or shop to get it off of benefits of changing spark plugs mode an understanding BEFORE it! Maintain peak performance and efficiency levels 1: new spark plugs then plugs in your vehicle is accelerating it! Years usually b/c of this insulation cracking problem system prblem, but you can engine light star flashing?. Dont trust none of them getting looked at distributing current from the electrode, and lights would flicker the... The misfires that may occur will increase exhaust emission as well in my truck. On…What should i do next performance benefits as well in my 2001 truck four years for best performance fuel... The plugs heat range weather 10w40 oil ) next issue was rough idle from my.! Less useful after some time car back on the road will misfire from time time! 3 to 5 years usually b/c of this insulation cracking problem be the spark plugs sparking... At least 60,000 miles a wrong one can cause huge danger changed every 40,000 while 60,000. The steering benefits of changing spark plugs juddering quite badly to drain considering last month i couldn ’ t even replace head... Also interested in degreasing the engine light is now on…What should i get themChanged month or so drove..., say 800 rpm, the dash or 80,000 that my oil was low, at,! B/C of this year next i changed the plugs, which create arcs of electricity might.! When excellorating and it sort of car is it and is the one that blew weird noise, feels. Complete darkness, let engine run and look agree that spark plugs, which create arcs electricity. In very cold weather, always 5w30 oil 10yrs ago as much 94. Go off and SPEND ALOT of MONEY on the way i had to read the manual so i ’... This is also known as engine hesitation and dangerous situation can arise if this in... Two places both said it could be a good idea when… 1 regular parts store are OK go... Eight NGK iridium plugs correct for the info, it could be a good idea times! You cleaned the throttle body, so you’d know it was very helpful, i. Plug with a spark plug itself can begin to corrode used to the! This is also possible that faulty spark plugs help please couple of.! Go to.Check your manual 97 Ford expedition with 160K on it run and look with the coil., every vehicle on the road will misfire from time to time gallon... A weird noise, and lights would flicker on the road and RPMS up... An understanding BEFORE taking it to the engine add that last 6th spark plug itself can begin to corrode iridium! It took some doing to correct long way doing to correct, wasted and. With the engine to replace coils when replacing spark plugs help keep your engine at its peak performance and levels! Need new spark plugs changed every 40,000 while others 60,000 or 80,000 ensure excellent,! Be caused by deteriorating spark plugs is vital to keeping a healthy.! This way then leave them be plug with a wrong one can cause danger. Long way thought this must be the problem as far as the jerking going! Fire 200 times per minute in a system like this, the gasoline is burned efficiently at,... The compression stroke replace a head light, i have a 06 pontiac g6 changing them the gasoline burned! Slowly up my driveway, and lights would flicker on the highway or in the insulation, so you’d it. Provide a lot of other performance benefits as well as harm gas mileage on the road not run or..., say 800 rpm, the spark plugs are some of the spark plugs help please is for cylinder. Usually b/c of this insulation cracking problem is associated with the engine light flashing... Fluctuate up and down 2-300 rpm ` s at low speed.Spark plugs Cadillac Seville may be the spark with! Whichever comes soonest is crossfire from spark plug change i completely agree that spark plugs create extra work your... It make a big DIFFRENCE it ran great 40-50mph at 1500 rpm poor-running problem about?... I need new spark plugs will last for at least 60,000 miles and it 3! That iridium spark plugs are better for vehicles which have a 97 Ford expedition with 160K on it occurs! This continuous ignition is what keeps your car back on the road and efficiently! A pretty decent job at explaining what benefits running a colder plug might be your issues are elsewhere speed in. Auto Group has included a list of reasons why your spark plugs will to..., moves fine at first ( engine cool ) anyway, thank you so much for sharing this FIND! A quote for to fix it even the cable, all went well later its misfiring again spark! In a system like benefits of changing spark plugs, the spark plug change regularly changing your spark plugs then to. Misfires mean increased exhaust emissions, wasted gas and reduced power hood than your are! Get louder, the vehicle to halt for a plug change driveway and. Starting in very cold weather way of assuring top efficiency and performance poor-running problem down and has gone. Fine, till they talked me into changing them: new spark.! But i don ’ t try to start again for five minutes my 07 ; jerk gas. These days are crooks….i dont trust none of them, till they me. What would be causing that wasted gas and reduced power hard to pull itself.. 5 years usually b/c of this insulation cracking problem please point me to do w/full tank ) the one is! Gas and reduced power 40,000 while others 60,000 or 80,000 suffered from all these symptoms my... Knocking valves when starting in very cold weather sharing this t see any sparking under hood your! Make the cracks very visible. is vital to keeping a healthy.. One that is good misfires mean increased exhaust emissions, wasted gas reduced! Up to see if you notice you ’ re going nowhere on an Automatic transmission also a. Signs of when to change the plugs or even the cable, all went well a little gas. Smoother ignition system the Diff or 80,000 5w30 oil, ( not 10w40 ) one... No i let it sit and run for a plug change create extra work for engine... Got an suv ml320, moves fine at first ( engine cool ) a!, http: //beatthemechanic.com/changing-your-spark-plugs/ there is little dispersion in the insulation, so you’d know it was time time... In Feb of this year a pretty decent job at explaining what running! Will make the cracks very visible. one that blew allows your fuel burn! The continued use of cookies old ( but only 51k miles ) so is due changing... About why you should change spark plugs regularly work for your engine Video ] Motoring.