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- Newsgroups: rec.autos.tech
- Path: sparky!uunet!zaphod.mps.ohio-state.edu!rpi!newsserver.pixel.kodak.com!psinntp!psinntp!balltown!welty
- From: welty@cabot.balltown.cma.COM (richard welty)
- Subject: Re: Timing Belt revisited
- Message-ID: <1992Sep3.214008.24893@cabot.balltown.cma.COM>
- Organization: New York State Institute for Sebastian Cabot Studies
- References: <59977@mimsy.umd.edu> <24404@oasys.dt.navy.mil>
- Date: Thu, 3 Sep 1992 21:40:08 GMT
- Lines: 42
-
- In article <24404@oasys.dt.navy.mil> bense@oasys.dt.navy.mil (Ronald Bense) writes:
- *>I replaced the belt and lined everything up according to the service
- *>manual but the engine does not run (well it barely runs but I don't
- *>count the horrible noises its making as running).
-
- *First, check to see if you have both cams lined up correctly, and I
- *even went as far as to make sure that the distributor (mine turns off
- *the intake cam, I think) was lined up to fire cylinder one. One tooth
- *off would cause all kinds of running problems (I did this once :) I
- *was *veeerrrryyy* careful this time. :)
-
- quite; i had the belt one tooth off on one bank of my v-6 alfa
- after i put it back together in july; the car ran like dogmeat
- until i reinstalled the belt correctly.
-
- however, unless the ``horrible noises'' are just a bad running motor,
- i'd be concerned. mechanical clanks are bad news after an episode
- like this.
-
- >>Compression test reveals only one cylinder with normal compression.
- >>1) 180psi
- >>2) 160psi
- >>3) 90psi
- >>4) 100psi
-
- >This could be because one of your cams is a tooth off. (Or, worst case,
- >you bent/broke a valve) I don't think you put a hole in a piston, as
- >then I think you'd have less compression than that shown, but I'll leave
- >that to others more familiar with those problems.
-
- compression will be just about exactly 0 with a holed piston (voice
- of experience talking here.) given that the initial symptom of failure
- was a failed timing belt, a holed piston is very unlikely; bent valves
- are more likely.
-
- cheers,
- richard
- --
- richard welty 518-393-7228
- welty@cabot.balltown.cma.com
- ``if you can read this, mario, you're too close''
- -- bumper sticker seen on a CART safety truck
-