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Which kind?
Exhaust or intake, run a compression test. A burned valve will show up as low compression on one cylinder. A blown head gasket will often show up as low compression on TWO cylinders.
If you suspect a bad PCV valve, jsut replace it as part of the tune-up.
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How do you tell if a 1993 chey p.u. egr valve is bad?
Start the engine, and spray a little carb cleaner around and on the EGR valve. If the engine changes sound are idles up are down then the valve is bad.
How to tell if valve or lifter is bad in 2001 Chevy S10?
You can tell a bad valve by doing a compression test.
Bad PCV valve smoke?
A bad PCV valve can cause the engine to smoke. The valve is easy to change in most engines to correct the problem.
How do you know when a manifold tuning valve is bad?
You can tell when a manifold tuning valve is bad when oil is leaking through it. You also can tell by inserting the dipstick into the valve and seeing if oil comes out through the dipstick.
Why does a car engine burn oil?
bad piston rings Excessive engine wear - Rings, Valve guides, Valve seals
Could a bad egr valve in a Chevy cause the engine not to restart after it has been running?
A bad EGR valve should not cause the engine to not start. There is most likely another problem that is causing the engine to not start.
Will a bad valve cover gasket make your engine skip?
no
Can anyone tell you why the check engine light in your '97 Town Car is on?
You have a bad valve....let them do a wet test and they'll find it...all others will be 100%.
What can cause the engine oil to overflow onto the spark plugs of a car engine?
possible bad valve guides or blown head gasket possible bad valve guides or blown headgasket
What are the symptoms of bad ccv valve?
Check engine lit goes on.
Why does a engine start shaking once it is loaded?
A bad valve or plug.
Why does your four wheeler click when you ride it and the problem is in the engine but what is it?
you have a bad valve
