[urq] Injectors out under boost?

Bill Bennett ur.quattro at verizon.net
Tue Oct 4 00:06:43 EDT 2005

you need to install 034 103 592D to stop popping injectors, my Son's car 
broke a new $90.00 injector cooling shroud trying to keep the injectors in, 
since we installed the metal bracket no problem other than CIS sucks wind in 
non stock applications, which is about to be gone, by by CIS, hello 034efi, 
yeah his car first, then my black bitch. Jeff Lewis already has the 034efi 
IB system on his URQ, his Mr. Butt Dyno reports it kicks ass, err, family 
list, I meant arse. I should have the 034 103 592D available for sale by the 
end of this month as my Son will no longer need it, give you a screaming 
 Best, Bill
----- Original Message ----- 
From: "fdekat" <fdekat at sentex.net>
To: <urq at audifans.com>
Sent: Monday, October 03, 2005 2:57 AM
Subject: [urq] Injectors out under boost?

> HAs anyone ever had a CIS injector sort of 'come loose' under boost?
> I'm trying to sout out a 'miss' under boost. After a long pull under boost
> (Say a big hill), I get a condition where the motor sounds sort of like a
> miss, and I can smell  LOTS of fuel. The sound when this 'miss' happens is
> sort of like a long running mellow fart, for lack of any better 
> explantion..!
> The plastic 'shround' that is supposed to cool the injuctors is 'sort of' 
> in
> place, but since it's been broken (aren't that all?), I'm not sure it's 
> doing
> an effective job of holding in the injectors..
> My theory is that an injector may be coming out just enough to let boost 
> air
> (and fuel) out past the injector. THat would explain the miss, and the 
> fuel
> smell.  Repeated attempts at full throttle then can provoke the miss with 
> boost (as I figure the injector still could be loose)
> After letting off for a bit, the vacuum in the intake pulls the injector 
> back
> in, and things are good again.
> So, if anyone has had an injector come out, what were the symptoms? 
> Similar
> at all?
> (A further detail: the MC motor has the original WX 'non shrouded' 
> injectors
> in it. Maybe a case of them not matching the MC's head shrouded injector
> holders correctly?)
> And second, does my theory even make sense?
> ( I was thinking of testing my theory by removing the plastic injector
> shround completely, and seeing if an injector pops right out. But the 
> thought
> of fuel spraying everywhere on the hot motor if an injector pops out makes 
> me
> think that's not such a good idea!  Maybe just replacing the injector o
> rings?)
> Regards,
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