Re: lifter noise after replacing head gaskit - Saab NG900 & OG9-3 Bulletin Board - Saabnet.com
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Re: lifter noise after replacing head gaskit
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Posted by Dean (more from Dean) on Mon, 1 Mar 2004 22:43:37 Share Post by Email
In Reply to: lifter noise after replacing head gaskit, Jeremy, Mon, 1 Mar 2004 21:38:32
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I assume that you have driven it a while and are posting out of exasperation. If so, I would expect the oil to have got into there. Haynes talks about fitting new lifters if needed, but states nothing about needing to prime them, just some oil on the outside.

Did you get the cam shaft bearing cap bolts which are drilled out into the right locations? Those drilled passages supply oil to the hydraulic lifters. Those bolt are black and are installed inboard, except at the caps closest to the sprokets.

The lifters should be, as you state, oil covered while removed and stored. But you did not need to remove them I expect, as you were not doing a valve job. So you did not need to remove the cams or the bearing cap screws? So if thats the case, I can't see how this is different from not running the engine for a week. And if the cam shafts were left in place, the drilled bolts can't be mixed up either.

I can't see what went wrong.

If you pull the VC and start the engine, can you see oil flow at the cams and lifters?

Haynes states that the chain will not come off of the camshaft sprockets. There is a vague implication in Haynes that the sprocket and camshafts only fit one way (but no pictures of that detail). It is also suggested that the crank be rotated two revs and set to TDC and then check to see that both cams are TDC as well, marks on shafts and bearing caps.

Is is possible for the head gasket to be upside down? Might block oil flow?, but you can check for that flow. Or do the locating dowels make that impossible?

If you did not move the engine and did not remove the cams, perhaps there is no reason that the cams could have moved and the possibiltiy of a timing error is remote?

Does any of the above help?

posted by 65.68.10...


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