Startup Noise
George Roffe
geo3@earthlink.net
Sun, 6 Jan 2002 03:22:48 -0600
AustinPR69@aol.com wrote:
>The start-up noise could be a number of things. I would have it checked at a
>local shop because it could range from alternator barings, to your timing
>belt barings or your idler barings, or even yours cams. In most cases it's
>just a loose belt but to be on the safe side, have it checked soon.
Y'all need to check the archives.
Squeal at start-up is well known in the SR20 community. It makes itself
known by a brief, but annoying squeal when starting the car (and it usually
will last for about a second after disengaging the starter.
Clatter at start-up is also well known to the SR20 community. It's the
hydraulic valve lash adjusters (HVLAs) pumping up. The length of time it
lasts can vary a bit. It can last anywhere from a second to several seconds.
The good news is that neither seems to cause any real trouble. My SE-R has
had starter squeal for about 100k miles. Clatter seems to come and go
sometimes. There is some debate about what causes it, but I personally
think oil leaks past seals in the timing chain tensioner, but I have no
proof. But.... nobody has a better suggestion (that fits all cases where
it either starts or stops).
George Roffe
Houston, TX
91 SE-R (well modded)
91 G20 (well modded)
84 944 SCCA ITS race car under construction
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