Have a chirping noise with my 96 Cobra that goes away when I pul the oil dipstick something i think is going on with the PVC system. Any ideas on most likely causes and fixes ?
So, here's my story which I NEVER thought would be relevant to anyone else.
A few years back I had a supercharged Pontiac Bonneville SSei (3.8L engine). I had to replace the supercharger with a rebuilt one, and whilst doing so I installed new gaskets between the intake and the S/C. Like an idiot, I used a fair (err, lots ) amount of silicone sealant around all the openings, figuring I'd make sure I only had to do the job once.
Well, everything seemed fine and then I started noticing these loud chirping noises. I was like ... WTF is that? This continued for a few weeks, the engine ran great and I wasn't too stressed, but I was puzzled. I took it to Pontiac dealer and they clearly heard it but had zero clue as to the cause.
Then I noticed the noise went away, and I though I was good-to-go, but upon opening hood I notice the dipstick is sticking out a little bit. So I reinstall the dipstick and the chirping starts right away. Then I figured it had to be PCV related as there was a PCV outlet port on the S/C. I took the fitting off and after peering down inside, I could see that my wonderful silicone job had inadvertently plugged the PCV port. I scraped out the port, reinstalled the fitting and the chirping was all gone.
So, my guess (a good one, in this case) is your PCV system is somehow obstructed. I would use 'Occam's Razor' approach and replace the PCV valve first.
I pulled the PVC valve out of the valve cover and the noise stopped so I'm guessing it is not that.
I have a Vette that I bought 10 years agoWhat happened snake bitten I thought you we're getting a vette and leaving this forum?
I'm going to go with a oil filler Breather cap to relieve the crankcase pressureI have a Vette that I bought 10 years ago
I'm going to go with a oil filler Breather cap to relieve the crankcase pressure
I posted a for sale thread for my 96 Cobra and tried to abide by your rules that I thought were a little over the top and you removed my thread because I didn't post a picture of my info on the car. you guys are a little anal for me BY I'm done with this place you should take some pointers from THE CORVETTE FORUM they know how to do things. I own a Vette and I sold the Cobra without any help from you guys so BAN me