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  #1  
Old 07-15-2002, 08:05 PM
chrsk chrsk is offline
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chevy S-10 HELP!

I have Chevy S-10 2.5, top end rattle. Anyone know what this could possibly be?
Low Mileage engine.
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Old 07-15-2002, 09:22 PM
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TerminalVelocity TerminalVelocity is offline
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ever change your oil?

Plugs, wires, distrubutor cap/rotor?

How many miles we talkin about?
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Old 07-15-2002, 10:18 PM
chrsk chrsk is offline
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It has 34 thousand miles on it.
Yes the oil has been changed, its not a spark knock or a rod knock or wrist pin.
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Old 07-16-2002, 09:45 AM
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Re: chevy S-10 HELP!

Quote:
Originally posted by chrsk
I have Chevy S-10 2.5, top end rattle. Anyone know what this could possibly be?
Low Mileage engine.
Can you be a bit more specific? Saying you have "top end rattle" is very hard to diagnose.
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Old 07-16-2002, 05:15 PM
chrsk chrsk is offline
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It sounds like the rattle is in the valves or lifters.
It just "pecks" when it idles. Any ideas?
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Old 10-18-2004, 03:43 PM
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you probably have a rodknock, have you taken it in and had it checked out? And did you say a 2.2L? invest in s 4.3
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Old 10-18-2004, 08:56 PM
Mikado14 Mikado14 is offline
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Re: chevy S-10 HELP!

Just finished replacing an engine in one today. It had a horrible knock from the top end at higher RPM's over 2,000. At idle, it was smooth. The problem turned out to be a bad lifter on #4 intake. With the valve cover off, you could see the valve float and the rocker clearance would get as high as .125".

The customer opted to get a junkyard engine instead of repair and guess what? This one knocks also, but not as bad.
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Old 10-19-2004, 09:53 PM
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Re: chevy S-10 HELP!

Pull the valve cover off and check the rocker arm and is if any are loose or cracked also check the push rods. The 2.5 had a problem of putting push rods through the rocker arms. They would run good just make a hell of a racket up top.
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