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

Project Pat psdooley at verizon.net
Fri Jun 28 08:19:26 PDT 2013


Timing marks lined up..
Any chance a keyway sheared?
Pretty simple to check crank/cam relationship in those motors- pull the
valve cover and turn to #1 TDC.  Cam lobes should be pointing in the
relative "up" position.  Screwdriver down spark plug hole will verify piston
is up.
Coolant in 3 holes?  Really? How did the car drive before you started the
work?  Were the injectors being replaced for a drivability issue? 


-----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.
> > 
> > 
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