'91 100q 5 injectors replaced - now car wont start

[Fred Munro]

Chris;

As an outside chance, you may want to check the cam timing. The integral key
on the crankshaft pulley has been known to shear off, allowing the pulley to
rotate on the crank. Everything still turns, but the cam timing is off. Line
up the mark on the flywheel with the bellhousing mark and see if the crank
pulley mark and the cam pulley mark also line up. Just a thought.

Good luck!

Fred Munro
'97 S6

-----Original Message-----
From: quattro-bounces at audifans.com [mailto:quattro-bounces at audifans.com] On
Behalf Of Christopher Gharibo
Sent: Sunday, June 16, 2013 7:26 PM
To: audi at humanspeakers.com; quattro at audifans.com
Subject: Re: '91 100q 5 injectors replaced - now car wont start

Here is an update on the 100q no-start after injector replacement:

The cam, accessory belts are all turning with the engine. The TB is intact. 

I have no spark. The hall sender on the distributor is plugged in. The
engine management system fuses are fine.

I have a coincidental spark failure but I just cant figure out why so.

Thanks.



------ Original Message ------
Received: Thu, 13 Jun 2013 07:19:00 PM EDT
From: Huw Powell <audi at humanspeakers.com>
To: Christopher Gharibo <cgharibo at usa.net>Cc: "<quattro at audifans.com>"
<quattro at audifans.com>
Subject: Re: '91 100q 5 injectors replaced - now car wont start

> I doubt that it has anything to do with the injectors, except for 
> perhaps something being knocked out of place during that job.
> 
> Check the ignition system components, especially the hall sender on 
> the distributor.
> 
> And the engine management system fuses.  Check them.
> 
> - Huw
> 
> On 6/13/2013 6:32 PM, TonyEscobedo wrote:
> > Put back all the original injectors and see how that works for you.. 
> > If it
works, then go for switching em out 1 by 1. Just a thought.
> >
> > Tony
> >
> > On Jun 13, 2013, at 6:23 PM, "Christopher Gharibo" 
> > <cgharibo at usa.net>
wrote:
> >
> >> As a follow up:
> >>
> >> the car was running before the injectors were replaced.
> >>
> >> Spark plugs were never touched. But, there is no spark with cranking!!
> >>
> >> The injectors seated in their shrouds and shrouds advanced to their 
> >> base without difficulty.
> >>
> >> The timing belt and its teeth appear intact. The crankshaft and all
other
> >> accessory belts all turn fine.
> >>
> >> How did I lose spark in all this? Thank you all for your help!
> >>
> >>
> >>
> >> ------ Original Message ------
> >> Received: Tue, 11 Jun 2013 09:59:05 AM EDT
> >> From: Fred Munro <munrof at sympatico.ca>
> >> To: "'Christopher Gharibo'" <cgharibo at usa.net>,   
<quattro at audifans.com>
> >> Subject: RE: '91 100q 5 injectors replaced - now car wont start
> >>
> >>> Chris;
> >>>
> >>> If the engine is turning and is spinning as freely as you say, it
sounds
> >>> like you have no compression on any cylinders. If some cylinders 
> >>> had compression, you would hear the pulse as the engine turned 
> >>> over. Did
you
> >>> install the injectors and seals properly? Are the spark plugs
installed?
> >> You
> >>> might try a compression test on every cylinder to verify 
> >>> compression or
> >> lack
> >>> thereof.
> >>>
> >>> Good luck!
> >>>
> >>> Fred Munro
> >>> '97 UrS6
> >>>
> >>> -----Original Message-----
> >>> From: quattro-bounces at audifans.com 
> >>> [mailto:quattro-bounces at audifans.com]
On
> >>> Behalf Of Christopher Gharibo
> >>> Sent: Monday, June 10, 2013 10:24 PM
> >>> To: John Larson; quattro at audifans.com
> >>> Subject: Re: '91 100q 5 injectors replaced - now car wont start
> >>>
> >>> Looked the car over again. The timing belt is intact and the 
> >>> engine definitely turns. The engine just turns smoothly and evenly 
> >>> without the usual rhythmic sounds. The sounds is one of constant, mono
tone crank.
> >>>
> >>> I am not sure if this is relevant, but I moved the car about 40 
> >>> feet by engaging the started and the car in neutral.
> >>>
> >>> I will check the fuel delivery some time as well.
> >>>
> >>> Thanks for your continuing help.
> >>>
> >>> ------ Original Message ------
> >>> Received: Mon, 10 Jun 2013 05:42:33 PM EDT
> >>> From: John Larson <viejoloco at comcast.net>
> >>> To: Christopher Gharibo <cgharibo at usa.net>
> >>> Subject: Re: '91 100q 5 injectors replaced - now car wont start
> >>>
> >>>> On 6/9/2013 4:35 PM, Christopher Gharibo wrote:
> >>>>> I just replaced 5 injectors on my 100q, cleaned what I can and 
> >>>>> plugged everything back in.
> >>>>>
> >>>>> The car now wont start. The fuel pump primes, the starter comes 
> >>>>> on but
> >>> the
> >>>>> card does not make that typical, cycling, cranking sound. The 
> >>>>> starter
> >>> sound is
> >>>>> now this constant spin instead of the rhythmic cranking one 
> >>>>> hears when the
> >>> car
> >>>>> cranks normally. It doesn't seem like anything is firing.
> >>>>>
> >>>>> Any thoughts on what I an missing?
> >>>>>
> >>>>> Thanks.
> >>>>>
> >>>>>
> >>>> I'm not clear on the "spinning" part.  Is the sound just the 
> >>>> starter spinning, or the engine itself?  Is the speed the same as 
> >>>> usual or substantially faster?  If it's just the starter, you 
> >>>> have a bad starter.  If the engine is cranking too fast, or even 
> >>>> just smoothly w/o the usual pulses, you may have a timing belt 
> >>>> problem.  The plastic bits aren't likely to cause a problem, 
> >>>> especially on all 5 cylinders at once.  They pulverize pretty
quickly.
> >>>>
> >>>> John
> >>>
> >>>
> >>> _______________________________________________
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> >>>
> >>
> >>
> >>
> >>
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