Discussion Starter · #1 ·
Could not replacing a bad PCV valve cause the head gasket to blow in a 2.7?
Having a bad PCV is a signature of poor maintenence. I don't know if it can be directly blamed on the PCV but it could have led to it indirectly. It's such a cheap part and easy to replace once a year. If the motor is less than a year old it is not practical to blame it on maintenance but as the vehicle ages this item is a must to check.johndeesmith said:Could not replacing a bad PCV valve cause the head gasket to blow in a 2.7?
Its a $3 part from Autozone and a ~$7 part from the dealership and requires no tools to change- its too easy not to do.johndeesmith said:Could not replacing a bad PCV valve cause the head gasket to blow in a 2.7?
- PCV is a check valve- If you pull the hose off- you should feel negative pressure from the hose. - If the PCV is bad- (ie clogged) - that means the crankcase will not properly ventilate (positve crankcase ventillation valve)-johndeesmith said:No excuses. I was unaware the PCV valve was something that needed to be checked frequently. As you can tell, I'm not a tech quite yet. One must learn at some point. Unfortunately, in retrospect it can cost.
So it can indirectly lead to a blown HGasket? How so?
No it will not. There is no sensor to check crankcase pressure or that the PCV is functioning properly.johndeesmith said:I assume a bad PCV would cause the "check engine" light to come on?