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Carbon Buildup

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Symptoms of a Bad or Failing Carburetor
Common signs include reduced engine performance, black smoke coming from the exhaust, backfiring, overheating, or hard starting.
What Does It Mean When an Engine "Knocks"?
If your engine is making a knocking noise it means there's a problem. The wrong fuel octane, carbon buildup, and bad spark plugs can cause knocking.

Related questions

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Lost a bunch of power over time with the diesel motor
When the swirl valve fails, a few things are happening. First, the exhaust gas recirculation valve (EGR) and its passages get clogged, leading to a seal in the positive crankcase ventilation (PCV) system leaking oil into the swirl valve. The...
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Car shuts off sporadically
There are numerous potential causes for your problem. One common issue with Volvos such as yours, is a faulty Electronic Throttle Module (ETM). It sounds like you had it cleaned, but it may need to be completely replaced. Using inputs...
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Engine misfiring
I would suggest checking the timing and checking for vacuum leaks. Misfiring is typical when the timing is not accurate as it relays inaccurate orders to your car's ignition system. Vacuum leaks can also cause this as they can create...
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RPM going up and down with hard startup on a Fusion
If it only happens when you are on a hill, it is definitely hill-related. The fuel pump could be starting to go out, because then all the gasoline slides to just one side. But more often, if it happens all...
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When first starting the car for the day, it wants to bog down intermittently only at idol. it never dies but
It may be time for a tune-up and cleaning of the induction system. Carbon build up around the throttle plate or worn spark plugs may cause the engine to run a little rough, especially on a cold start. Consider hiring...
Question
How to clean carbon buildup on a 2015 Eco Boost Mustang
It's easy, your catch can isn't going to stop it, so when you put that on you don't have to worry. But to clean it now, all you have to do is take off any big vacuum on the intake...
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Car doesnt start or stalls out quickly
A lot of times on older Ford four-cylinder engines, the problem is mechanical. In most cases, (if your engine is the 1.9L fuel injected model) the issue of stalling out or having difficulty starting is related to the throttle body...
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Engine won't fire without ether and runs bad until it warms up.
Hi there. There could be a lot of carbon build up inside the combustion chamber making the fuel not burn properly due to the valves and rings not sealing. First check the spark plugs and see if there is excessive...
Question
Carbon buildup on the intake valves.
Sent to CS for billing question on how much it will cost to remove carbon buildup on the intake valves.
Question
only passenger side plug is carbon build up driver side is clean change plug doing same thing
Hello, thank you for writing in. The most common cause of carbon build up on the spark plugs is unburned fuel, also known as "running rich". Despite the assumption that the injectors are to blame, it usually has more to...

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