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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.
What else can I help you with?
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.
Why the spark plugs have carbon deposits?
Carbon deposits on spark plugs are primarily caused by incomplete combustion of fuel within the engine. This can occur due to a rich fuel mixture, faulty fuel injectors, or issues with the ignition system, leading to unburned fuel and oil that accumulate on the plugs. Over time, these deposits can hinder spark plug performance, causing misfires and reduced engine efficiency. Regular maintenance and ensuring proper engine tuning can help minimize carbon buildup.
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.
When an automobile is not properly in tune it will not burn the fuel properly causing what to build up on the engine?
When an automobile is not properly tuned, it can lead to incomplete combustion of fuel. This can cause carbon deposits to build up on the engine components, such as spark plugs, valves, and pistons. Over time, this buildup can affect engine performance and efficiency.
How do you change spark plugs for a 2003 Mitsubishi galant spark plugs?
2002 galant , can't find the spark plugs
How do you replace spark plugs on 1995 Isuzu rodeo?
Take old spark plugs out put new spark plugs in
