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Repair Topics / Engine Intake Manifold
Engine Intake Manifold and Intake Manifold
Gaskets This
category contains featured questions as
examples. They relate to most vehicles.
Question:
2002 GMC Jimmy, miles: 67,000. I've read that the
GMC Jimmy's are sort of prone to getting carbon build-up
in the intake manifold. Is there any kind of carbon
cleaner or cleaners that you could recommend that I
could use to spray into the throttle body to clean it
out, without harming the other components? I'm kind of
new to having a fuel-injected truck. I've always had a
carburetor in my cars. When I wanted to clean out the
crud, I would just spray carburetor cleaner down the
carburetor and that would take care of all the build up.
But, with an injected vehicle, I feel a little lost. The
problem that I've been having is that I keep getting
carbon pieces flaking off and getting trapped in the EGR
valve.
Answer: The intake manifold should
be removed to properly clean the carbon
buildup from the inside of the manifold. On
engines with high mileage that are starting
to use oil, the oil causes a carbon buildup
to occur at an accelerated rate.
Question: 2003 Honda Accord mileage:
28,000. Hello, my car has a poor running problem at
idle, It sounds like it has a whistle. When I rev the
motor I can hear it kind of go away. But it is still
there. what should I do ?
Answer: Its sounds like you have a
intake manifold gasket that is leaking, Remove the
manifold to replace the gasket. Your problem should go
away.
Question:
2004 Ford F-150 mileage: 84,000. Truck runs good but
when the engine comes down to idle it starts running
funny. I can hear a vacuum leak so I don't think it is a
vacuum problem what should I do?. How do I test this?
Answer:
Thank you for asking this question for it is one that
send people down the wrong repair road. Some vacuum
leaks you can not hear, you need to test for leak by
physically checking all vacuum hoses. If all hoses test
ok suspect the mass air flow sensor for your problem.
Repair Topics / Engine Intake Manifold
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