So fuel is getting to the fuel distributor (3A) - but not to any of the injectors - lines going to..

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Old 05-21-2005, 03:35 PM
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Default So fuel is getting to the fuel distributor (3A) - but not to any of the injectors - lines going to..

...the injectors are dry at the injectors and distributor. Thoughts?
Old 05-21-2005, 03:54 PM
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Did you lift up on the air flow plate?
Old 05-21-2005, 04:00 PM
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Default Yes sir, it has about a 1/2" of play in it.

BTW - got the CD today - thanks!!! )
(although it won't run on any of my XP boxes - have it running on a makeshift WinME box with no problems).
Old 05-21-2005, 04:11 PM
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*When the intake hose is off the top of the airbox assembly
Old 05-21-2005, 04:44 PM
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Default is the fuel pump doing its job? do you have enough pressure at

the distributor? After that I would be thinking clogged injectors, but to have all of them clogged would seem unusual. The other thing is the fuel pressure regulator. If it is similar to what I am used to, it is mounted on the block on the driver side. Just look for some additional lines running to a small box. If thats bad you will not have the correct pressure either.
Old 05-21-2005, 04:56 PM
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Default Fuel pump is pumping plenty and what seems to be plenty of pressure at the distributor...

...ETKA mentions two pressure regulators...one with an electrical connection on it (2A)

<IMG SRC="http://audi.mtnre.com/images/Audi80/FPR1.jpg">
Old 05-21-2005, 04:57 PM
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Default And the 2nd on the return line (15)...

<IMG SRC="http://audi.mtnre.com/images/Audi80/FPR2.jpg">
Old 05-21-2005, 04:59 PM
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Re: ;O)
Old 05-21-2005, 05:01 PM
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Default This one maintains 55 psi, and by-passes the rest back to the tank...

Also called the "mechanical" fuel pressure reg, it maintains a working pressure of 55psi inside the fuel pressure head.
Old 05-21-2005, 05:02 PM
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Default There's a banjo bolt issue: Maybe yours is plugged up???

Engine Performance - Loss of Power or Engine Misfire

Group: 25
Number: 93-05

Date: March 15, 1993
Subject:Loss of Power or Engine Misfire

Model(s):
80/90 1988 - 1992 m.y. With 5cyl. engine code NG

Condition: Loss of power under load and/or engine misfire.

Cause: Fuel Distributor

Low fuel flow caused by restriction at inlet banjo bolt (arrow) on fuel distributor.
Note: From 1988 m.y. the inlet banjo bolt has a mini filter screen which must be replaced during the 7500 mile maintenance service.

Service
Banjo Bolts

- Inspect banjo bolt for identification marks

Illustration A <img src="http://pictureposter.audiworld.com/60004/fuel_dist.jpg">

If the hex head of the banjo bolt has a raised shoulder (arrow), it contains a mini-filter.
- Replace mini filter with banjo bolt Part No. N 021 071 2

Illustration B <img src="http://pictureposter.audiworld.com/60004/banjo_bolt_-fuel.jpg">

The hex head of this banjo bolt does not have a raised shoulder and does not contain a mini-filter
Note :Whenever these vehicles are in for any type of service, inspect the inlet banjo bolt and replace it if it has a shoulder as in illustration A.

Caution! Part numbers are for reference only. Always check with your Parts Dept. for latest information.


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