catastrophic engine problem?
Thread Starter
Burning Brakes
Joined: Sep 2001
Posts: 951
Likes: 1
From: Jacksonville Florida
catastrophic engine problem?
I got under my car this afternoon. I was trying to troubleshoot what sounded like an exhaust leak. Well, I didn't find an exhaust leak. It appears this knocking sound is coming from inside the motor (toward drivers side)
No loss of power or other symptoms yet. What do you think?
No loss of power or other symptoms yet. What do you think?
Burning Brakes
Joined: Aug 2006
Posts: 789
Likes: 38
From: Shreveport LA
If it is coming from the bottom, you prob spun a rod bearing. If so it will get much worse very soon. I ran into the same problem on mine and it's at TSP getting a 402 installed right now. There is always a bright side. 
Racer
Joined: Mar 2006
Posts: 464
Likes: 0
From: silverdale washington
You would know a rod knock w/o ever even hearing one before. Mine has made noises since I got headers. If you have headers they are just louder than normal manifolds. Also those little donuts that couple the exhaust after manifolds always leak a little bit. Check oil pressure, change oil and cut open filter and look for metal. If oil is clean most likely not a rod. Try a thicker oil and see if it changes the noise, can also be an indication of worn bearings.
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Le Mans Master
Joined: Jan 2003
Posts: 8,596
Likes: 19
From: Portland Oregon
How loud is the noise? One time we had a customer thinking it was a engine knock and I even thought it was. It turned out to be the internals of the CAT that came apart and was knocking with every exhaust pulse. It sounded just like a bearing knock!
Thread Starter
Burning Brakes
Joined: Sep 2001
Posts: 951
Likes: 1
From: Jacksonville Florida
Originally Posted by JR_VETTE
Could be piston slap. Does it happen only when the engine is cold?
