SPONSORED LINKS

Why did PCV plastic cover blow off on my 97.

Tiny
WILLIETOWNSEND
  • MEMBER
  • 1997 CHEVROLET SILVERADO
  • 186,000 MILES
Why did PCV plastic cover blow off on my 97 Chevy Silverado 5.7L?
I was trying to crank my silverado and the PCV plastic cover just blew off. It made a pop and blue smoke came from under hood and thats when I notice the plastic PCV cover blown off. What could have cause this to happen. I wish that it was some kind of way to post pictures to show what I am taking bout. The plastic PCV cover has the 90 degree elbow on it.
Images (Click to make bigger)
Thumb
Thumb
Thumb
SPONSORED LINKS
Wednesday, February 27th, 2013 AT 11:09 PM

6 Replies

Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The pcv system may have a problem, clogged? Possibly too much crankcase pressure? With a warm engine remove oil fill cap, is it puffing out smoke? If so, that is blow-by.
Was this
answer
helpful?
Yes
No
+1
Wednesday, February 27th, 2013 AT 11:23 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
Just to add, I melted a piston, once, along the edge where the rings are located. The crankcase pressure was so high, it blew the pcv valve out of the valve cover and sprayed oil all over the engine compartment.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
+1
Wednesday, February 27th, 2013 AT 11:27 PM
Tiny
WILLIETOWNSEND
  • MEMBER
  • 3 POSTS
How can you correct this problem?
Was this
answer
helpful?
Yes
No
+1
Friday, March 1st, 2013 AT 2:50 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
It depends on the problem, if it has a lot of blow-by, piston rings.
Was this
answer
helpful?
Yes
No
Friday, March 1st, 2013 AT 3:01 PM
Tiny
WILLIETOWNSEND
  • MEMBER
  • 3 POSTS
I put that new plastic cover on and new PCV valve and it is driving good. I just don't want it to happen again.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, March 1st, 2013 AT 5:19 PM
Tiny
JDL
  • MECHANIC
  • 16,098 POSTS
The new valve might have fiXed it, hopefully.
Was this
answer
helpful?
Yes
No
Friday, March 1st, 2013 AT 6:59 PM

Please login or register to post a reply.

Related Blue Smoke Content

Blue Smoke
GUIDE
Blue Smoke
When a car is producing blue smoke it means oil is getting into the combustion chamber for one reason or another and being burnt along with the normal gasoline. This creates...
VIEW MORE

Sponsored links