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Dry sooty deposits (aka carbon build-up) usually indicate either a too-rich fuel mixture, or weak ignition. This can cause misfiring, hesitation, and hard starting. Check that the plugs are the correct heat range. Also check that the air filter isn't clogged. Check for engine management, fuel system, or ignition system problems.
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What causes weak spark?
Sometimes a weak spark in an internal combustion engine can be caused by dirty spark plugs. It can also be caused by weak distributor coils.
Car shakes vigorously when you accelerate mostly uphill?
Usually caused by spark plugs not igniting properly. Check that your spark plugs and and your spark plug wires are in tact and working.
Why does '87 Honda accord not idle steady and diesel when shut off carb adjustment how?
diesling is caused by bad spark plugs replace spark plugs
Why would a 1999 durango have gas fumes coming from the exhaust?
that could be caused by ur spark plugs missing or something like that i would check ur spark plugs and if not that idk.
What would cause carbon foul on spark plugs on a 1967 Chevy truck?
Carbon Fouling of Spark PlugsUsually spark plug carbon fouling is caused by either the fuel mixture [ratio of fuel to air] is too rich [too much fuel], OR it could be that crankcase oil is getting into the combustion chambers [cylinders].Crankcase oil fouling is most often caused by either worn or broken "oil" rings on the piston, or on overhead valve engines, worn out valve-stem guides.
What could make a olds cutlass supreme diesel out?
diesling is caused by bad spark plugs
When do you change your spark plugs?
when do you change spark plugs
What corrective action for black carbon build up on poulan lawn mower spark plugs?
The fuel/air mixture is slighly on the rich side. Try closing the needle valve about 1/8 turn.
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
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Take old spark plugs out put new spark plugs in
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2002 galant , can't find the spark plugs
How many spark plugs does a 2004 dodge durango have?
4.7L has 8 spark plugs. 5.7L has 16 spark plugs.
