CIS-e problems[NG CIS-E3]
Brendan K. Walsh
bkwalsh4201 at hotmail.com
Fri Jan 2 11:06:14 EST 2004
Where are you buying from and what do they cost? europartsdirect.com has
them listed at 48.99 for cis-e and 57.32 for the e3. If you've got a better
supplier I'd love to know.
----- Original Message -----
From: "Ben Swann" <benswann at comcast.net>
To: <audi at humanspeakers.com>
Cc: "Brian Sims" <sims at miliserv.net>; <quattro at audifans.com>
Sent: Friday, January 02, 2004 10:51 AM
Subject: Re: CIS-e problems[NG CIS-E3]
> Comments inserted - I'm ordering injectors today. I know that methodical
> troubleshooting with fuel pressure test would be a good idea, but I feel I
> should install new injectors anyway, as I think these are crucial to
> reliability in the long run. At least then I'll have ruled leaky
> out as the culprit.
> ----- Original Message -----
> From: "Huw Powell" <audi at humanspeakers.com>
> To: "Ben Swann" <benswann at comcast.net>
> Cc: "Brian Sims" <sims at miliserv.net>; <quattro at audifans.com>
> Sent: Thursday, January 01, 2004 6:23 PM
> Subject: Re: CIS-e problems
> > > Just cranking the engine over is not enough flow to lift
> > > the plate.
> > Taken pretty much out of context, I have to disagree with that one
> > statement. Cranking the engine over causes air to be pumped into the
> > engine, which lifts the plate. Not a lot, of course, but enough to get
> > things running.
> > We also don't know *for sure* if the CISE3 CSV is getting the same,
> > lower pressure as the other five injectors.
> Correct - I've been making that assumption, but would be nice to verify.
> > I will also take this opportunity to once again say that I think the CSV
> > has *very little* to do with hard starting, especially if several tries
> > don't start the car easily.
> Agreed - I think in my case it is a combination. I feel quite certain
> in my case, insufficient pressure in the injector lines is the problem.
> question is WHY?
> I am certain there are no external leaks. The injectors are not new and
> probably have at least 80k on them and are the original ones for this 87.5
> GT engine. Pump is new NG pump. Accumlator I assume is original for the
> '87 4000 Quattro the engine is installed into. Entire CIS-E3 fuel
> distributor/metering head was installed after extensive cleaning - Fuel
> Distributor was NOT disassembled, but plunger area cleaned thrououghly,
> airbox was swapped to accomodate metering head. Temp sensor is new.
> > Residual pressure (check valve), vapor lock (perhaps due to leaky
> > injectors), bad senders, vacuum leaks, static misadjustment, are more
> > likely culprits. And the ignition system, of course. IMHO, for what
> > it's worth.
> Ignition is good and the rest need to be checked out if injectors don't
> the problem. It will be another week before I get injectors. Thanks
> your feedback - Happy New Year!
> > --
> > Huw Powell> http://www.humanspeakers.com/audi>
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