MCG89 Posted November 10, 2014 Report Share Posted November 10, 2014 Hi all, before I dish a crap load of money into my conquest I need some help. Bought an 87 wide. Had a knocking noise and rattling noise. Changed the timing chain and tensioner with it. Rattling went away but the knock is still there. Here's the deal. It only knocks when warm, and only knocks around 2k to 4k and that's it. Has a non jet valve head with hydraulic lifters. Any idea? Oil looked alright to me as well. Quote Link to comment Share on other sites More sharing options...
Dred_85.5_TSI Posted November 10, 2014 Report Share Posted November 10, 2014 Balance shaft bearings would be my first guess, unless it had a delete kit done already. Or a connecting rod/main bearing starting to go. Exhaust leak maybe. Quote Link to comment Share on other sites More sharing options...
MCG89 Posted November 10, 2014 Author Report Share Posted November 10, 2014 Balance shafts have been deleted as well. My thought is a bearing starting to go. But my experience with failing bearings is all the way through the rpm with fluttering noise on deceleration. I'm at a lost lol Quote Link to comment Share on other sites More sharing options...
MikeMeyerhoff Posted November 14, 2014 Report Share Posted November 14, 2014 When you had your oil pump off did you inspect it? Any idea what pressures you are getting? Quote Link to comment Share on other sites More sharing options...
Starfighterpilot Posted November 14, 2014 Report Share Posted November 14, 2014 Without some key info we will be shooting in the dark with any suggestions. Does your Lady only knock when she is in gear or even if if you are in neutral? If she knocks in neutral: Go to Harbor Freight and buy a engine noise stethoscope. Or use a LONG screwdriver against your ear. Put her up on 4 jack stands. After warming her up, with someone else on the accelerator pedal slowly running her through the RPM's, try to locate the exact source/location of the knock in the engine using the stethoscope/screwdriver. Make sure that you keep the stethoscope's hollow probe/screwdriver (and your head ) away from any rotating engine parts, ie. - belts, harmonic balancer, radiator fans, etc! Let us know what you find. For What It's Worth. KEN Quote Link to comment Share on other sites More sharing options...
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