Best Answer

Engine is running extremely rich.

User Avatar

Wiki User

โˆ™ 2005-05-16 17:45:10
This answer is:
User Avatar
Study guides
See all Study Guides
Create a Study Guide

Add your answer:

Earn +20 pts
Q: What would cause all 4 spark plugs to be black and run rough on a 95 sunfire 22L?
Write your answer...
Related questions

What would cause 1995 Dodge Intrepid 3.5 to have a rough idle?

change the plugs and wires

What make the car to idle rough you changed the plugs?

When the idle goes rough, you must idle the plugs. Else the car plugs roughly.

What would cause a 1993 Nissan 300zx rough idling.?

There are several things that can cause your 1993 Nissan 300 to idle rough. The most common cause is dirty spark plugs. Bad spark plug wires can also cause the problem.

What would cause a 99 Chevy Malibu 4-cylinder idles rough sputters dies worse in gear dry black soot on plugs replaced both o2 sensors and spark plugs and boots now exhaust has black smoke?

Check the air filter, fuel injectors, EGR valve and temperature sensor.

Why would a 2002 Kia Spectra idle rough in drive?

There are several things that can cause your 2002 Kia to idle rough. The most common cause will be bad spark plugs or a bad spark plug wire.

1980 Chevrolet Blazer with new 350 330 hp with vortec heads gm performance motor 12486041 I have a eddlebrock thunderseries carb I am getting black spark plugs and rough idle is it timing plugs both?

Black plugs indicate that you're getting too much fuel. You need to set up the carb and to do that you'll need access to an exhaust gas analyzer. Don't go too lean or you'll burn valves and possibly a piston. Running "rich" can also cause a rough idle.

What may cause a 1996 Ford Escort LX to idle rough and that has stalled a few times while reversing?

The most common cause of a 1996 Ford Escort to idle rough is bad spark plugs or bad spark plug wires. A plugged air filter will also cause it to idle rough.

What causes rough idle?

Many things can cause a rough idle. Bad plugs, plug wires, broken or leaking vacuum hose, defective fast idle solenoid, just to name a few.

Why the engine feels rough after changed the spark plugs?

the transmition ,is probably not adjusted to the spark plugs,or their not the right spark plugs

Why does 95 Buick Park Avenue idle rough when brakes are applied?

Power brakes use engine vacuum to get their power. If the engine is out of tune, the loss of vacuum will cause it to run rough. Try changing the spark plugs.

What cause a car engine to run rough?

There are a number of things that can cause an engine to run rough. Plugs may be bad. Plug wires may be bad. If you have sensors, there may be a bad sensor. You could have water in your gas. Could have a burnt valve. There is a number of different things.

Does bad spark plugs give you rough idle?

Bad spark plugs can indeed cause an engine to idle rough. If any of the spark plugs are misfiring or are not producing enough of a spark to ignite the fuel, then not only will the engine idle roughly, it will alwso waste gas. If may seem as though it is running fine when you are driving however, you still may be wasting gas and your pickup may not be as fast as it should.

What would cause a 98 ford expedition to idle and run rough?

Auto Zone will check your engine codes for FREE... It maybe a coil pack... Or like on mines it ended been bad plugs... So I tune it up... Plugs and wire for the 4.6L Plugs no wire for the 5.4L

My 92 Eclipse has a rough start and runs ruff and pulling back?

Check the 92 Eclipse for vacuum leaks. Check to see that all of the spark plugs are firing properly. Check to see that the fuel injectors are working. Either of these could cause the rough start and rough running.

How do you know spark plugs are bad?

Poor performance, hesitation and rough idle could be signs of worn out spark plugs.

Why would a 2 stroke not idle and foul plugs after a few hours?

A 2 stroke engine will not idle and foul plugs after a few hours if there is a piston ring leak or the carburetor is providing too much fuel. This will quickly cause buildup inside the combustion chamber and cause it to run very rough.

Why does my 98 sunfire gt idle rough AND LOSSES POWER WHEN WARM?

head gasket is gone

What can cause a rough idle in 1992 firebird?

Maybe your air filter or plugs and wires. Or maybe your MAF sensor or your IAC valve needs cleaning.

What could cause a rough idle on a 2000 mercury cougar when in drive?

I just changed fuel filter,pump,sparks plugs and wires on mine and it runs great!

What is a metaphor for black hair?

As black as the ace of spades.

Why does a Chrysler Pt cruiser Idle rough after new spark plugs?

Maybe when they put the spark plugs in they were not gapped right or they maybe the wrong spark plugs.

What would cause a rough idle after driving on a 1985 camaro V8 tuned-port fuel injection then check engine light comes on?

a plug misfiring would cause the rough idle and check engine light or if u changed the plugs and wires u could have put the plug wires in the wrong order

The plugs and wires have been changed and catylitic converter removed. Ran really rough with no power and now wont start. It is a 1995 sunfire. Could it be the 02 sensor?

It is never going to run right with the converter removed. It is also illegal to operate a vehicle with the catalytic converter removed.

What do old spark plugs do to a car?

Old spark plugs can make a car misfire, run rough, and not fire at all.

Why does your car shake and drive rough?

If your car is shaking it could be poor suspension alignment can cause a car to shake and vibrate, and other possible causes are bent or worn suspension parts, old tires, bent wheels and bad brakes. If your car sounds especially rough at speed, the problem could lie with the car's spark plugs and wires. Spark plugs fire more frequently the faster you drive, and the engine will sound rough when they begin to fail.