timing belt skipped Re: How was your trip home?

[SJ]

Denis,

I checked the manifold vacuum on my 90 100Q.
It was 17-18 inches Hg  upon cold startup.
Then it went up to 19-20 in Hg  after a few minutes of warmup.
Both readings were very steady.
I used 2 different gauges, thats why I have two numbers for each reading. I
think the higher number is the more accurate number.

I havent checked the vacuum on the 88 5kq yet. The battery is disconnected.
I think I have a battery drain problem and looking into that.

I see now why you thought I was nuts for not spotting the vacuum taps on the
manifold. The 90 100q has the new style manifold, rectangular shape. And the
vacuum taps are right there on top.

The 88 5kq has the rounded curved intake manifold. No taps visible. The
vacuum tap is at the rear end of the manifold, under the ISV tubing. Not
easy to get at.

However, both cars have a vacuum check valve and tubing( for the A/C and
differential locks) that is easily visible and readily accessible.
Disconnect the plastic tube from the 2" rubber extension on the check valve
nipple, and hook up the vacuum guage.
Voila!  It took 15 seconds.


SJ
85 Dodge PU, D-250, 318, auto
85 Audi 4k - - sold but still on the road
88 Audi 5kq
90 Audi 100q


----- Original Message ----- 
From: "Eric S" <scirocco at vintagewatercooleds.com>
To: "Denis" <sparkplugvw at hotmail.com>
Cc: "SJ" <syljay at optonline.net>; <quattro at audifans.com>
Sent: Friday, December 24, 2004 2:09 PM
Subject: Re: timing belt skipped Re: How was your trip home?


>
> Denis,
>
> My 2.3 CIS-3 car had a bad leak as well, right at the head, changing
> injector seals helped, but did not solve the problem.  Removing the upper
> intake is easy, lower intake is very annoying, but I am glad we did, I
> found my lower *intake* manifold was warped!  We machined it flat, put a
> new gasket in, and the car has been very healthy since then.
>
> -- 
> Eric
> www.vintagewatercooleds.com
>

> >     **** OK, you got yourself an air leak.
> >     "close to 4 cyl"?  near the intake manifold? fuel injector?
> >     You can play around there until you find the exact spot.
> >     Maybe you can use some heavy oil or grease to temporarily plug the
> > leak.
> >     Your vacuum guage and engine acceleration should tell you if you
found
> > the
> >     spot.
> >     I'll try and get a vacuum reading on my cars tomorrow. You can use
> > those
> >     numbers as a guide and reference. OK THANKS