1995 Chevy Camaro ROCKER ARMS

KUBAGUY

MEMBER
1995 CHEVROLET CAMARO
V8
2WD
AUTOMATIC
115,000 MILES

I BOUGHT THIS CAR A COUPLE YEARS AGO. It has a lot of engine work, but since I didn't build lt and the kid I bought it off of didn't know much I can only guess at certain things. The engine has a lot of perfomance parts. BBk intake, Headers, fuelinjection. It also has some kind of performance cam, Hydraulic lifters, roller rockers. Here lies the problem. The rockers keep sliding off to the side. The studs are threaded and look to be in good condition. We have adjusted them cold and used the proper procedure. I have never run into this problem before. Even the new rockers we replaced do the same thing.A certain few always come off but you never kow which one iis next. They do it randomly Any suggestion would be appreciated. Thank You, Dan

3 Replies

MMPRINCE4000

MECHANIC
8,549 POSTS

If lifter preload is correct, then most likely the lifters are the problem, either they are the wrong ones or they are not getting suffecient oil to pump up.

It is also possible the pushrods are the wrong length.

Check with cam manufacturer for correct lifters and pushrods. Most have a tech line for problems just like yours.

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Tuesday, June 2nd, 2009 AT 7:53 AM

KUBAGUY

MEMBER
2 POSTS

I have no Idea what it has for a cam.I did notice that after adjusting the rocker it would be nice and tight but when I went back to it in just a few mins it would be loose again, like the lifter had collaped some.I started the engine to pump up the lifters cause it had been sitting for a couple week but still after a few minutes ithey would be loose again.I just thought it would be odd for all the lifters to go bad at once, so I figured it was just a caracteristic of hydraulic lifters and once it was running and the lifters pumped up it would be ok. But they don't slip immediatly so I wuld think the lfters are already pumped up when they are sliping. Not knowing what it has for a cam, how could I find out what lifters ad push rods to use

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Tuesday, June 2nd, 2009 AT 8:29 AM

MMPRINCE4000

MECHANIC
8,549 POSTS

After adjusting it would be normal for the lifter to bleed down and to be somewhat loose, not to the point the rocker is flopping around.

When engine is started, lifters should be pressurized and quiet.

I am not sure (short of looking at camshaft) how you would know if lifters are correct.

You may have to contact previous owner and get more info.

The fact that they are falling off indicates a lifter/pushrod problem or a lack of lubrication to properly pump up the lifters.

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Wednesday, June 3rd, 2009 AT 8:11 AM