bad noise on start up
Thread Starter
Racer
Joined: May 2005
Posts: 287
Likes: 0
From: Miami FL
bad noise on start up
I have a nasty noise on start up and when the oil pressure comes up within a second it goes away.
After much consideration and some searching on previous posts I have determined it is either timing chain tensioners not having pressure which causes the rattling or a starter motor gear not pulling away from the flywheel.
Now considering that this only happens after the car sits overnight and never during the day of driving during restarts I feel it is the chain tensioners. Possibly the springs are weak on the tensioner of the cam chain and it allows the chains to rattle around until oil pressure moves the tensioners
Question,, is it difficult to replace the springs on the chain tensioner , can this be done with relative ease?
Any experience in this area ?
Thanks
Bob
After much consideration and some searching on previous posts I have determined it is either timing chain tensioners not having pressure which causes the rattling or a starter motor gear not pulling away from the flywheel.
Now considering that this only happens after the car sits overnight and never during the day of driving during restarts I feel it is the chain tensioners. Possibly the springs are weak on the tensioner of the cam chain and it allows the chains to rattle around until oil pressure moves the tensioners
Question,, is it difficult to replace the springs on the chain tensioner , can this be done with relative ease?
Any experience in this area ?
Thanks
Bob
Burning Brakes
Joined: Mar 2005
Posts: 909
Likes: 0
I don't know about the springs themselves, but the chain tensioners don't look too bad to replace. I was going to do it because I have a bit of chain slap if the car sits for 3-4 days without running, but I'm delaying it for now.
Drifting
Joined: Jul 2005
Posts: 3,363
Likes: 25
From: NY, USA
I believe that you need to put in a chain with a master-link if you don't break down the engine. At least that's what I've read about the pre-'89 911's.
Not that that's necessarily a bad thing, but probably not optimal.
Cheers,
Dave
Not that that's necessarily a bad thing, but probably not optimal.
Cheers,
Dave
RL Community Team
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Joined: Oct 2003
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Chain tensioners are accessed and removed by taking off the small cover - bottom side of the engine on the right, top side on the left. They just slide right out. I have not heard of these needing replacement... at least on this forum.
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Technical Guru
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From: USVI
Originally Posted by bwoodry
Would valves needing adjustment make this noise on start-up?
Originally Posted by bwoodry
so what next?
Technical Guru
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From: USVI
Originally Posted by BaysideC4
I need to replace them too - Any advice on the installation and cost?