engine knocking, wondering if serious???
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From: Riley, Ks
engine knocking, wondering if serious??? Recently my car has had a bit of an issue with oil pressure, when I first got the car about 3 months ago it made 40psi at idle warmed up to 180° like every other ls1 ever. But about a week ago it suddenly dropped to 20psi at idle warmed up, and I couldn't get it to make above 40psi at any rpm. I changed the oil in it about a month ago and it made great oil pressure after that. I know 20psi should be fine but since the drop in pressure, there is now a noticeable knock at idle ans any rpm.and I know its not from the lifters, its more then a tick and its never had a problem with piston slap once it warms up. Any help would be appreciated.
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From: Riley, Ks
Bottom end knocking would be rod bearings? Its got 147,000 on it never knocked, had the lifter tick, but now with loss of oil pressure its pretty bad. Also, about 3 yes ago the car had spray and made quite a few passes down the track, other then that its never been ran very hard
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From: Riley, Ks
yep, its a 98 with stock pump, i think im gonna try to get a ls6 pump in this weekend. i just got done driving it for the first time in about a week, it sounds more like the lifters ticking but really exaggerated compared to when it runs normal pressure, so its not so much a knock i guess. is there iny simple fix to stop lifter tick? or do i need new springs?
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Thread Starter
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From: Riley, Ks
Last night I got underneath the hood while it was running and I revved it up, its sounds nothing like a knock just sounds like the lifters are dry and ticking loudly. I guess I was kinda exaggerating the knocking cause i didn't know what it was in the beginning. I'd still like a tip on how to get them to quit ticking so loudly.
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From: Riley, Ks
