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Topic: Low Compression on 1985 Cougar 5.0 (Read 1925 times) previous topic - next topic

Low Compression on 1985 Cougar 5.0

I've got a question that is boggling my mind, and quite frankly is g me off, I bought a 1985 Cougar a little while back and the engine makes a high pitch popping noise when running, and has low compression in the valves.  Any thoughts and ways to fix would be great.

Re: Low Compression on 1985 Cougar 5.0

Reply #1 –
the only "POPING" noise i can remember is the poping noise the smog pump makes when a hose has come off or one of its inline pipes have broken.

first place id check would be where the smog meets the exhaust and trace backwards from there.

Re: Low Compression on 1985 Cougar 5.0

Reply #2 –
Quote
"Low compression in the valves"


Ummm..... thats a new one. :dunno:

Re: Low Compression on 1985 Cougar 5.0

Reply #3 –
Quote from: TurboCoupe50
Ummm..... thats a new one. :dunno:


My thoughts exactly, also a correction, the popping noise is when starting.

Re: Low Compression on 1985 Cougar 5.0

Reply #4 –
Maybe it's one of those infamous "ler valves"? You know, the thing that sits right next to the flux capacitor.. ;)

Re: Low Compression on 1985 Cougar 5.0

Reply #5 –
does it make a poping noise when you give it gas or rev it?