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MISFIRING, SPARK PLUGS GETS WORN OUT QUICKLY,MISFIRING,JERKING/SHAKING WHEN IM DRIVING,BUSTING SOUND FRO, THE EXHAUST PIPE

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  • Anonymous Mar 17, 2009

    I have the same problem mostly i notice it when im stopped the truck shakes at idle and i changed the wires and plugs but its still there,not throwing any codes though

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Have you changed the plugs and possibly have plug wires crossed?

Posted on Nov 18, 2008

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1 Answer

How do I fix a multiple misfire with a rough idle and auto transmission that shifts rough. I have an obd 2 trouble code PO300?


need to find out why the misfire bad coil ,wire ,wrong plug gap etc check injectors and fuel presure --what ever is causing misfire is also probably causing problems with transmission shifting

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Why is my engine light blinking on my 2010 challenger. it also shakes


Class A Cylinder Misfire, that will ruin
your exhaust converter,possibly &
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Stop using it & get your codes & diagnose them

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What would cause truck to shake very hard or rough when starting?


I really need to know the mileage.....?..also the question isn't very clear ...Is the whole truck shaking roughly or is the engine shaking roughly or is it both the engine and truck shaking..?..Since I am not sure I will answer what I can....Ok......If the truck is shaking while sitting still at idle the engine/trans mounts could be worn and or loose mounting hardware...If the engine is running roughly at idle causing all to shake that bad it could be a number of things causing it as usual...Quite often a faulty plug wire/and or bad plug will make it have a misfire because it will be running on only 5 cylinders..If that's the case it could be more than one bad...A vacuum leak will cause it to perform in the same manner...however all cylinders will be firing..Normally a vacuum leak is easy to pinpoint..however it could be a faulty IAC valve..(IDLE AIR CONTROL)..The idle air control is designed to hold a high idle at start up then slowly bring idle down to proper Rpm.....A faulty TPS (THROTTLE POSITION SENSOR) will also cause a rough running problem..And let's not forget the O2 sensor..(OXYGEN SENSOR)..The O2 sensor controls air/fuel mixture...and yes an exhaust manifold gasket will make it run rough but not too bad...It has a rough running sound more so than causing it to horribly shake..It will shake but not to bad..
it is located at the exhaust side of engine..The exhaust manifold is mounted to the engine exhaust port..the exhaust pipe is mounted to the exhaust manifold and the muffler/cat converter is mounted to the exhaust pipe...You can check the plug wires quickly..With engine running carefully remove plug wires 1 at a time..If the sound of engine gets worse the wire you removed is good..after verifying it is good or bad plug wire back on then pull the next wire..and so on..If you pull a wire off and there is no change in engine operation that is the bad wire..If that is the case change all plugs and wires...One at a time..(It is a good idea to make sure all wires come off easily before starting engine..old wires will come apart easily..grasp wire tightly at boot and twist left to right while pulling..)as far as the other components I spoke as well as many others,the best,easy way is to have it hooked to a scanner and they can check/test all components for proper operation...Now..If it runs good but is shaking the engine/trans mounts are worn as I stated earlier..any loose engine component will cause an engine shake also but you should notice it at a glance...engine mount bolts/nuts being loose can be tightened without changing mounts if caught in time..Trans could be coming loose.also worn clutch will cause vibration...Send more info and I can guide you to remove and replace any faulty components you may find to save you money.........Brooks/Metalpoet.....

May 17, 2014 | 1993 Chevrolet S-10

1 Answer

Jerks at 45mph and 60mph. it also hesitates atime after slowing down


sounds like fuel related, as no codes show back to old skool,check all air intake/vacuum hosses for condition check for blockage in main air intake hose/pipe check for fuel pressure and injector spray pattern, check they color of deposits on the spark plugs , check exhaust is not blocked ,try this lot then let me know how your getting on

Apr 22, 2014 | 2001 Chevrolet Malibu

1 Answer

My 2000 nissan maxima se has a misfire i can hear it through the exhaust and when im driving. say i put on the gas hard and let off, it will make a loud kinda of reving noise. it had 300k miles on it when...


More than likely, the culprit will be one of the ignition coils located on top of your spark plug. each plug has it's own coil and can be changed individually. Be prepared to change out multiple coils, especially if it's hard to get to it. You won't want to replace another one later when you already had access. You can expect to pay anywhere from $80 - $150 for one coil. While your at it, you may as well get some spark plugs and replace those too. No sense having to take everything apart again to fix a worn or faulty plug!

Apr 15, 2014 | 2000 Nissan Maxima

1 Answer

Car shakes and jerks


If it was a coil it would read "service engine" after about two weeks of driving. I would replace the motor mounts.

Dec 28, 2012 | 2001 Ford Mustang GT

2 Answers

98 expedition 5.4 4x4 with dual a/c..sputters and shakes while idle and driving...please help me ! i have replaced 5 of the 8 spark plugs till i can get to the back 3 (pain in the ****) no change not even...


When you know the symptom who needs codes?And if there was a code it probable say lean bank 02. why simple you have a misfire. the smell rich exhaust the shake and sputter in drive. 2 causes the Expedition suffer from ,An open EGR valve.If you can change a fuel filter and change a spark plug you can test this. when the engine is running and misfire at idle and the vehicle is warmed up and at operating temperature. Turn off engine. Go to the EGR is it hot to touch. because if it is it open and this the the culprit.Another misfrie is from COP (coil on plug.)When you change the spark plug where any of the spark boot torn or worn that spark can go through. Or even a faulty COP will do this .To find it you have the engine running and lift one COP out of the cylinder and listen for a engine drop if the engine RPM drop the COP is good if no change in engine the COP is bad. By the way 600rpm in drive is low

Feb 27, 2012 | 1998 Ford Expedition

1 Answer

My car engine shakes, I changed the spark plugs and it still shakes while stopped?


Spark Plugs---- Get changed every 3 years
Get changed at no more than 60,000 miles
Wear out but seldom misfire & never fix anything

So you have other issues

Vacuum Leaks -intake manifold
Vacuum Leaks -EVAP System
Ignition Problems
Air Idle Solenoid Problems --effecting idle
Exhaust Leaks-effecting the O2 Sensor Readings
Dirty MAF Sensor

& lots more things to check out

Worn out Motor & Transaxle Mounts

Aug 12, 2011 | 2000 Nissan Altima

2 Answers

Enigine shaking and rough take off


If the plug wires were off there's a good chance that you have fouled a spark plug or two causing the engine to misfire making it shake. It sounds like a good tune-up might be in order.

Feb 24, 2010 | 1993 Nissan Maxima

3 Answers

Car is jerking engine light is flashing and smell gas


With modern cars it is bad when the engine light just comes on and the vehicle does something very different. It should not be driven. If the car is smelling of fuel and jerking it is because it's miss-firing (i.e. one or more cylinder is not getting spark but is getting fuel). This can be anything from electrical/electronic to mechanical like a broken rotor cap (as an example). The good thing, is that the light is coming on and a mechanic can check the ECU for error codes. Alternatively, you can buy or barrow one your self and check it out on your own (I think even certain auto-part stores will check it for you as long as you get in the zone;). 1996 is a good year for that since that is when OBDII started and all vehicles started using the same port to check for issues.

Feb 17, 2009 | 1996 Chevrolet Monte Carlo

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