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

Tue Jul 2 08:48:46 PDT 2013

I was just in Clifton to pick up my Mk3 TDI! AHU swap into a 100q, anyone?
Lol.
On Jul 2, 2013 11:47 AM, "Christopher Gharibo" <cgharibo at usa.net> wrote:

> I am sad to say it, but the engine appears to have died in my 100q.
>
> Lots of good parts or make an offer on the whole car. AC works. New
> headliner. Original windshield. Just about everything works. I'll be
> putting it up in Audi fans.
>
> The car is in clifton, NJ.
>
> Email me off the list. cgharibo at usa.net
>
> Thanks.
>
> On Jun 29, 2013, at 2:04 PM, TonyEscobedo <TonyEscobedo at hotmail.com>
> wrote:
>
> > I don't see any of what is below happening from just changing the
> injectors.
> >
> > Is fuel coming out of the injectors? Is there a difference between old
> tired injectors and brand new one's fuel flow. Could your fuel pump be weak?
> >
> > On Jun 29, 2013, at 12:54 PM, Fred Munro <munrof at sympatico.ca> wrote:
> >
> >> Chris;
> >>
> >> Which timing marks were checked? If you are checking the crankshaft
> pulley
> >> mark and the cam pulley mark, that only means that the timing belt
> hasn't
> >> jumped. The only marks that matter are the mark on the flywheel (for
> TDC)
> >> and the cam pulley mark.
> >> The crank pulley on these I5 engines has an integral key as part of the
> >> casting. The cast key is not very robust and is only intended to locate
> the
> >> pulley on the crank, not hold it in position. The pulley is held in
> place by
> >> the tremendous torque on the crank bolt (around 330 ft.lbs if I recall
> >> correctly). If the bolt loosens off or isn't torqued enough, the crank
> >> pulley can rotate on the crank and will shear off the key. The timing
> marks
> >> on the crank pulley and the cam pulley will still line up if the timing
> belt
> >> hasn't jumped, but the cam will not be timed correctly because the crank
> >> pulley is no longer in the correct position on the crank. Lining up the
> TDC
> >> mark on the flywheel to put the engine at TDC will reveal the cam timing
> >> problem because the cam pulley mark won't line up (nor will the crank
> pulley
> >> mark, which tells you that the crank pulley has shifted).
> >> I have come across one I5 engine with no mark on the flywheel - if this
> is
> >> your case you will have to manually find TDC on cylinder #1 by checking
> the
> >> piston position through the spark plug hole.
> >>
> >> How does your mechanic know that it was coolant he was seeing and not
> >> unburned fuel or the oil that was put in the cylinders to try to restore
> >> compression? Did he extract a sample? If the car was starting and
> running
> >> fine before you started the injector replacement I doubt that it would
> blow
> >> the head gasket just sitting there while you replaced injectors. It
> sounds
> >> like you haven't had the car running since you did the work.
> >>
> >> 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: Friday, June 28, 2013 10:41 AM
> >> To: Steve; quattro at audifans.com
> >> Subject: Re: '91 100q 5 injectors replaced - now car wont start
> >>
> >> Tried oil in the spark plug hole to no avail. Timing marks are lined up.
> >>
> >> My mechanic advised that he thinks he is seeing coolant in 3 spark plug
> >> holes.
> >>
> >> I am baffled. Everything else in this car is in great shape.
> >>
> >> I am about to part this thing out or just sell it as is. It's in
> Northern
> >> NJ.
> >>
> >> Any other advice?
> >>
> >> ------ Original Message ------
> >> Received: Thu, 27 Jun 2013 06:42:38 PM EDT
> >> From: Steve <phixxitt at yahoo.com>
> >> To: Christopher Gharibo <cgharibo at usa.net>, Cody Forbes <
> cody at 5000tq.com>Cc:
> >> "quattro at audifans.com" <quattro at audifans.com>,  Christopher Gharibo
> >> <cgharibo at usa.net>
> >> Subject: Re: '91 100q 5 injectors replaced - now car wont start
> >>
> >>> I agree with the washed down cylinder wall theory. RX7s are famous for
> >> this.
> >> I had this happen on an FC that I had that required removing the fuse
> for
> >> the fuel pump and then squirting ATF in the cylinders and spinning the
> >> engine with the starter to get compression back.
> >>>
> >>> The motor sounded like a timing belt had broke and it spun fast with
> >>> no
> >> compression before I did the fuse/ATF thing.
> >>>
> >>> I wonder if your injectors are spraying more gas than they should
> >>> causing
> >> the cylinder wash...
> >>>
> >>>
> >>>
> >>>
> >>>
> >>> --- On Thu, 6/27/13, Cody Forbes <cody at 5000tq.com> wrote:
> >>>
> >>> From: Cody Forbes <cody at 5000tq.com>
> >>> Subject: Re: '91 100q 5 injectors replaced - now car wont start
> >>> To: "Christopher Gharibo" <cgharibo at usa.net>
> >>> Cc: "quattro at audifans.com" <quattro at audifans.com>, "Christopher
> Gharibo"
> >> <cgharibo at usa.net>
> >>> Date: Thursday, June 27, 2013, 5:32 PM
> >>>
> >>> I stand by the mention of possible washed down cylinders. Squirt some
> >>> oil in
> >> each cylinder and see if compression improves.
> >>>
> >>> -Cody Forbes (mobile)
> >>>
> >>> On Jun 27, 2013, at 4:57 PM, "Christopher Gharibo" <cgharibo at usa.net>
> >> wrote:
> >>>
> >>>> He just texted me that the TB marks line up.
> >>>>
> >>>> Doubts somethink keeping valves open and say there is little or no
> >> compression
> >>>> in all 5 cylinders.
> >>>>
> >>>> ------ Original Message ------
> >>>> Received: Thu, 27 Jun 2013 02:38:05 PM EDT
> >>>> From: Tony Hoffman <auditony at gmail.com>
> >>>> To: Christopher Gharibo <cgharibo at usa.net>Cc: jlagnese at massed.net,
> >>>> quattro at audifans.com
> >>>> Subject: Re: '91 100q 5 injectors replaced - now car wont start
> >>>>
> >>>>> Nope, but a skipped timing belt can. THe one thing never stated in
> >>>>> this thread is if the timing marks line up. I know I've suggested
> >>>>> it at least once, that is key, If the TB is still turning the cam,
> >>>>> but jumped teeth, you will have compression issues. Start with the
> >>>>> basics, they only take
> >> a
> >>>>> second to check!
> >>>>>
> >>>>> Tony
> >>>>>
> >>>>> On Thu, Jun 27, 2013 at 1:18 PM, Christopher Gharibo
> >>>> <cgharibo at usa.net>wrote:
> >>>>>
> >>>>>> Injectors appear to seat well, but they did seat rather easily.
> >>>>>> Can a
> >>>> poor
> >>>>>> injector seal lead to no compression?
> >>>>>>
> >>>>>> I used the seals from autohaus.
> >>>>
> >>>>
> >>>> _______________________________________________
> >>>> quattro mailing list
> >>>> http://www.audifans.com/mailman/listinfo/quattro
> >>>> http://www.audifans.com/kb/List_information
> >>> _______________________________________________
> >>> quattro mailing list
> >>> http://www.audifans.com/mailman/listinfo/quattro
> >>> http://www.audifans.com/kb/List_information
> >>
> >>
> >> _______________________________________________
> >> quattro mailing list
> >> http://www.audifans.com/mailman/listinfo/quattro
> >> http://www.audifans.com/kb/List_information
> >>
> >> _______________________________________________
> >> quattro mailing list
> >> http://www.audifans.com/mailman/listinfo/quattro
> >> http://www.audifans.com/kb/List_information
> >>
> _______________________________________________
> quattro mailing list
> http://www.audifans.com/mailman/listinfo/quattro
> http://www.audifans.com/kb/List_information
>