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#1
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S10 2.2 lifter noise?
I had previously posted last year on the problems i had with my
96 2.2 Chevy S10. To recap, the tensioner on the cam chain broke and allowed the chain to jump time. I took the head off and found 8 bent valves. I had the head into a machine shop, had it cleaned, decked, and 8 new valves and seals put in it. I had someone else put the head back on at the time. The truck started and ran OK after all this. Now, here's my issue. At About 3000 RPM+ or so i hear what appears to be lifter noise from the engine. I cannot really detect it at lower RPM's. And i can raise the throttle in park to this point and hear the noise also. So, my question now is what this noise could be? I did not remember hearing it before all this happened. My thoughts are maybe: A lifter mount not properly screwed down? Bent push rods maybe? I know this engine had piston slap issues and i heard them before this happened. But it really does not seem to be the same noise. Any thoughts? What would be the result of a bent push rod? Bob ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
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#2
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S10 2.2 lifter noise?
"BOB URZ" > wrote in message ... > I had previously posted last year on the problems i had with my > 96 2.2 Chevy S10. To recap, the tensioner on the cam chain broke > and allowed the chain to jump time. I took the head off and found > 8 bent valves. I had the head into a machine shop, had it cleaned, > decked, and 8 new valves and seals put in it. I had someone else > put the head back on at the time. The truck started and ran OK > after all this. > > Now, here's my issue. At About 3000 RPM+ or so i hear what appears to be > lifter noise from the engine. I cannot really detect > it at lower RPM's. And i can raise the throttle in park to this point > and hear the noise also. > > So, my question now is what this noise could be? I did not remember > hearing it before all this happened. My thoughts are maybe: > A lifter mount not properly screwed down? Bent push rods maybe? > I know this engine had piston slap issues and i heard them before > this happened. But it really does not seem to be the same noise. > Any thoughts? What would be the result of a bent push rod? > > > Bob Next time the tank is low, fill it with premium. It might be spark knock. Al |
#3
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S10 2.2 lifter noise?
"BOB URZ" > wrote in message ... >I had previously posted last year on the problems i had with my > 96 2.2 Chevy S10. To recap, the tensioner on the cam chain broke > and allowed the chain to jump time. I took the head off and found > 8 bent valves. I had the head into a machine shop, had it cleaned, > decked, and 8 new valves and seals put in it. I had someone else > put the head back on at the time. The truck started and ran OK > after all this. > > Now, here's my issue. At About 3000 RPM+ or so i hear what appears to be > lifter noise from the engine. I cannot really detect > it at lower RPM's. And i can raise the throttle in park to this point > and hear the noise also. > > So, my question now is what this noise could be? I did not remember > hearing it before all this happened. My thoughts are maybe: > A lifter mount not properly screwed down? Bent push rods maybe? > I know this engine had piston slap issues and i heard them before > this happened. But it really does not seem to be the same noise. > Any thoughts? What would be the result of a bent push rod? > > > Bob > > > > > ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet > News==---- > http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ > Newsgroups > ----= East and West-Coast Server Farms - Total Privacy via Encryption > =---- Get a mech to listen & check for rod-bearing noise. s |
#4
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S10 2.2 lifter noise?
sdlomi2 wrote: > "BOB URZ" > wrote in message > ... > >>I had previously posted last year on the problems i had with my >>96 2.2 Chevy S10. To recap, the tensioner on the cam chain broke >>and allowed the chain to jump time. I took the head off and found >>8 bent valves. I had the head into a machine shop, had it cleaned, >>decked, and 8 new valves and seals put in it. I had someone else >>put the head back on at the time. The truck started and ran OK >>after all this. >> >>Now, here's my issue. At About 3000 RPM+ or so i hear what appears to be >>lifter noise from the engine. I cannot really detect >>it at lower RPM's. And i can raise the throttle in park to this point >>and hear the noise also. >> >>So, my question now is what this noise could be? I did not remember >>hearing it before all this happened. My thoughts are maybe: >>A lifter mount not properly screwed down? Bent push rods maybe? >>I know this engine had piston slap issues and i heard them before >>this happened. But it really does not seem to be the same noise. >>Any thoughts? What would be the result of a bent push rod? >> >> >>Bob > > > Get a mech to listen & check for rod-bearing noise. s > Its coming from the top end. I know what pre detonation noise is and its not that. And its peaky like a resonance only above a certain RPM. It almost sounds like something loose sympathetically vibrating, but i a fairly sure its somehow valve train related. Ir does not have that lower sound of lower end rod/bearing noise. Back to the original questions: If the push rods were slightly bent, what kinds of symptoms or noise If the rocker arm nuts were slightly loose? Bob ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =---- |
#5
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S10 2.2 lifter noise?
"Bob Urz" > wrote in message ... > > > sdlomi2 wrote: > >> "BOB URZ" > wrote in message >> ... >> >>>I had previously posted last year on the problems i had with my >>>96 2.2 Chevy S10. To recap, the tensioner on the cam chain broke >>>and allowed the chain to jump time. I took the head off and found >>>8 bent valves. I had the head into a machine shop, had it cleaned, >>>decked, and 8 new valves and seals put in it. I had someone else >>>put the head back on at the time. The truck started and ran OK >>>after all this. >>> >>>Now, here's my issue. At About 3000 RPM+ or so i hear what appears to be >>>lifter noise from the engine. I cannot really detect >>>it at lower RPM's. And i can raise the throttle in park to this point >>>and hear the noise also. >>> >>>So, my question now is what this noise could be? I did not remember >>>hearing it before all this happened. My thoughts are maybe: >>>A lifter mount not properly screwed down? Bent push rods maybe? >>>I know this engine had piston slap issues and i heard them before >>>this happened. But it really does not seem to be the same noise. >>>Any thoughts? What would be the result of a bent push rod? >>> >>> >>>Bob >> >> >> Get a mech to listen & check for rod-bearing noise. s > Its coming from the top end. I know what pre detonation noise is > and its not that. And its peaky like a resonance only above a certain > RPM. It almost sounds like something loose sympathetically vibrating, > but i a fairly sure its somehow valve train related. Ir does not have > that lower sound of lower end rod/bearing noise. > > Back to the original questions: > If the push rods were slightly bent, what kinds of symptoms or noise > If the rocker arm nuts were slightly loose? I think if any of these conditions exist, there would be valve lifter noise, and it seems as if it would be loudest when oil pressure was lowest--at idle? Don't believe it'd be loudest at 3k rpm, as oil pressure should be relatively high there. s |
#6
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S10 2.2 lifter noise?
replying to BOB URZ, tonysimpkins1 wrote:
Got a pecking noise on my 1999 2.2 s10. I took each plug wire off 1at atone on the four plug off the noise stops what could it be -- for full context, visit https://www.motorsforum.com/gm/ecm-t...rix-78057-.htm |
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