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My spark plugs were changed now my car is shaking and back firing with smoke coming out

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Someone has most likely oput the plug wires in the wrong firing order and this will definitely cause that problem i dont know the year model for your car or size engine but i would call caddillac dealer and find firing order and make sure plug wires are reconnected properly by a qulaified mechanic

Posted on Sep 03, 2009

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Posted on Jan 02, 2017

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I have a vz alloytec v6... Had spark plugs changed...still problem ...rumble shaking when idiling...smoke from exhaust...ideas?


probably not plugs but problem injectors allowing excessive fuel in to the cylinders
smoke ( black ) is over fueling from excessive fuel pressure or leaking injectors or leaking injector seals

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Car shakes and blows black smoke after changing oil, filter, and spark plugs


no engine stated (which one?)_ 2.0L 16valve?

you didnt do sparks 1 by one, and mangled the firing order.

bad boy,

or set the spark gap wrong, or used china junk rotors, that index 3 ways, or all the above.

when working old dizzycars. (dizzy at flywheel end of CAM)

1: mark the cap for #1, follow the #1 cylinder spark wire to cap

mark the cap, post as #1 or be very angry soon,,,, i promise./

2 : the replace wires 1 by1 , if not , it will never run.

3: also know dizzy rotor direction, crank and look

CCW or CW.? write it down. for later.

firing order is 1,3,4,2. in the direction in above line.3



if you need to start from scratch we can.

the FSM covers that. so does alldata.com

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94 Toyota Corolla engine problems


Take a compression test on # 4. It may be a little oil burning w coolant getting by the head gasket. POSSIBLE faulty injector or not firing on time. Ck for any oil in the anti freeze or anti freeze in the oil.

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Running rough and white thick smoke from exhaust


sounds like you are burning coolant. sounds like you have a headgasket issue or cracked block. is your coolant level low?? in the overflow bottle and in the raadiator? something tells me that you will find that coolant is low. you are pulling coolant into the engine and it goes into the cylinder and pass the exhaust to the back of the car. the white smoke is the coolant burning off and thats why the car runs rough, because coolant is not flamable so it doesnt burn. this results in the spark plug not firing right and having rough running condition.

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Why is 2003 Nisan Frontier Super Charged truck smoking and 4th, 5th, and 6th cylinders not firing after spark plug change? Put old spark plugs back in no change


If the engine is smoking and you have misfires on three cylinders, this is not a good thing. The best course of action at this point would be to pull all the spark plugs out and perform a compression test to help evaluate the extent of the damage.

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possibly misfiring or idle set too low. Is there any white smoke coming out of the tailpipe ?

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My 98 is shaking at the engine and smoking the fluids are up could it be the spark plug wires and the spark plugs


HI,
Spark plugs or wires will cause engine shaking, but not SMOKING.
I would identify the source of the SMOKE first. If it is a fuel leak the smoke may turn to fire. This is not meant to scare you yet with out seeing it I know a fuel leak will cause a engine to "shake" and create smoke as the fuel touches a hot exhaust manifold.

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Oily spark plug,changed plugs now car smokes


You changed 6 coils, but you didn't change spark plugs? The new coils give strong spark to burn off resisdues from your old plugs plus what ever left inside the combustion due to bad old coils causing smoke and bad ordor. Change all new spark plugs so you can have good ignition to burn off all junks inside combustion chambers. Smokes are at the beginning, but it will go away after less than 10 minutes.
If it is not going away you may have other problemS:
Rich mixture causing engine check light come on.
Check if engine oil level.
Check if your coolant level.
Open the oil cap to see if you have milky stuff. If there is milky stuff then you have bad head gasket.
Let me know what is coming out so others can learn from your experience. Good luck.

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You need to check the oil with the dipstick (wipe in down a few times) to see if it looks like a chockalate milk shake. If coolent has made its way into the oil you have blown head gasket. The fuel pump which is usually in the gas tank in most gm vehicles would not cause white smoke, if it failed you car would not start because your engine would not get any gas to the injectors

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1 Answer

Ford thunderbird when run shake a lot


just replace the spark plug back into its position the car would be shaking because it is not firing on that cylinder

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