Question about Chevrolet S 10
You need to replace the PCV valve, it is stuck open.
The PCV valve function is re-directing the gases from the crank case into the fair that is going to the engine.
A way to test the PCV valve is disconnecting the PCV hose , starting the engine, and with the car on idle, checking if there is suction from the hose. If there is no suction, then the hose is clogged or kinked. don't feel a vacuum you need to check the hose for clogs or other blockage.
If the hose is OK, test the valve itself by blowing air in the PCV hose. If the air blown into the hose find no resistance, then the valve is stuck open and must be replaced.
Be careful not to breath the air coming from the PCV, as the gas in there is poisonous.
If the PCV valve is OK, test the vacuum system, but it looks like the problem is PCV valve or hose.
Posted on Feb 08, 2010
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Posted on Jan 02, 2017
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