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

[Project Pat]

1)Make sure the coil is getting 12v.
2)Check the hall sender.
One wire is ground, one is 12v.
3rd is signal wire.
Check signal wire(plugged in) with a logic probe or led test light.  Should
blink when the engine is cranking.

-----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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> >>> http://www.audifans.com/kb/List_information
> >>>
> >>
> >>
> >>
> >>
> >> _______________________________________________
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> >>
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> >


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