Any Idea on why its blowing blue/grey smoke out.

Tiny
ANONYMOUS
  • MEMBER
  • 1983 CHEVROLET SILVERADO
  • 142,500 MILES
Any idea on why its blowing blue/grey smoke out the passenger tail pipe and has a rough idle. Plus the fuel consumption is extreamly high
Saturday, October 20th, 2012 AT 8:56 PM

1 Reply

Tiny
SQM
  • MECHANIC
  • 6,383 POSTS
Hello,

There are several reasons why an engine will emit blue smoke.
Engine could have too much oil (overfilled). Clog in cylinder head drain back holes.
Worn valve stem seals. Bad piston rings. It can also have blue to with a plugged crankcase ventilation.
The intake gasket can also cause the blue some in these engines.
Best course of action is to go thru the possible items to find the issue.

Here is a helpful article that goes over all the basics:

https://www.2carpros.com/articles/blue-smoke-from-engines-exhaust

Please let me know of any questions.
Thank you.
Was this
answer
helpful?
Yes
No
Tuesday, September 28th, 2021 AT 8:27 PM

Please login or register to post a reply.

Sponsored links