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80 928
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Noisy lifters
Iv'e been noticing that my '80us will sometimes fire up with a couple of noisy lifters. (The noise goes away after a couple of minutes.) My oil pressure is good, runs at 5bar above 2500 rpm, and around 2.5 bar at idle. The car runs super otherwise.
1) Do I just live with it? 2) Do I need to R &R the offending parties? 3) I believe the cam will have to come out, can this be done in car? Thanks, Kerry Last edited by XLR8928; 10-05-2009 at 06:07 PM.. |
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10-04-2009, 05:43 PM
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Moderator
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Mine does that sometimes, like yours, goes away in a minute. I was also thinking of running some sort of cleaner right before my next oil change. What do you all recommend?
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1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD** 
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10-04-2009, 05:53 PM
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Network Native
Join Date: Jan 2007
Location: SoCal
Posts: 10,349
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I put some Marvel Mystery Oil in my oil, maybe half of a 16oz bottle, put the other half in the gas tank, but the way the lifters are made they are junk traps internally. I'd live with it for a bit.
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10-04-2009, 08:49 PM
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80 928
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Iv'e used riselone oil additive in my detroit iron, in the past, and had positive results. I may try it on the 928 and see what happens. I was mostly concerned with damaging my cam lobes.
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10-05-2009, 06:58 AM
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80 928
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The Riselone appears to be working
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10-07-2009, 07:31 AM
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Moderator
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Quote:
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior 1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior **SOLD**
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10-07-2009, 09:21 AM
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1980 Porsche 928
1983 Datsun (Nissan) 280ZX turbo
1983 Datsun (Nissan) 208ZX turbo
