Re: Backfire in airbox, timing issues?

["Dan Bubb" <jdbubb@ix.netcom.com>]

It's real easy to mis-index the intermediate shaft when replacing the timing
belt which can change ignition timing. Did you recheck you ignition timing.
Sounds like it's advanced if the idle is high. In reference to your later
post, if it was 180 out the engine wouldn't even run.


----- Original Message -----
From: S.Coleman <deadbolt@mindspring.com>
To: scirocco group <scirocco-l@scirocco.org>
Sent: Thursday, May 03, 2001 9:23 PM
Subject: Backfire in airbox, timing issues?


> I finally redid the entire fuel system on the 78 rocco this week.  New
fuel
> pump, o-rings,..blew out the tank, etc,.   I also removed the "decal
valve"
> and the ERG valve from the intake to exhaust and installed new vacuum
> connections.  Added two gallons of gas with some injector cleaner and
turned
> the key.  Room!  Holy shit....it runs again.  Now here is the dilemma:
The
> car idles real fast and I noticed the exhaust was getting REAL hot
quickly.
> Even the muffler had smoke rolling off of it!  I always thought that this
> was a timing issue..Mechanical timing that is.  (not ignition timing)  I
> removed the timing belt and timed everything and re-installed the belt.
> Started the car,..the idle seems to have dropped a bit,..but still there
is
> back fire in the exhaust, (not much), but there is back fire in the
intake.
> (the rubber boot over the fuel distributor)  So I lined the cam gear point
> up with the top of the head.  The bottom notch in the crank is NOW lined
up
> with the intermediate shaft mark and the 'O' on the flywheel is aligned.
> The car will NOW start with one turn of the key except,... it idles pretty
> fast, still has back fire in the intake and seems to be "flooding out"
when
> I press on the accelerator.  There isn't a timing mark on the timing belt
> cover for the crank like there is on the 16v's.  Can someone please help
me
> out here?
> Many thanks for the help and apologies for the long winded message.
> Chris
>
>
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