fuel injector clogged

[Ben Swann]

Huw,

It does as part of the output test sequence for the MAC-11.  Turn key on and insert fuse - the pump will run as the first test, then cold-start, then some other devices, forget the sequence, but it is on SJM site.

I have done the test both ways.

Ben

[Date: Mon, 09 Aug 2004 20:53:09 -0400
From: Huw Powell <audi at humanspeakers.com>
Subject: Re: fuel injector clogged
To: Jim & Michelle <jimhill at blomand.net>
Cc: quattro at audifans.com
Message-ID: <41181C75.2070102 at humanspeakers.com>
Content-Type: text/plain; charset=us-ascii; format=flowed


> I have a 88 5k that seems to have clogged fuel injectors.  I can't 
> get any spray out of any of the five injectors.


> Just so I'll know I checked the injectors correctly. I first removed
> them from the head, jumped the fuel pump to turn it on by turning on
> the ignition switch and inserting a fuse in the top of the relay,
> then pushing up on the air plate,NO SPRAY, took the injectors off and
> did the same thing, plenty of fuel came out of each line. (sounds
> dangerous doesn't it).

I don't think putting that fuse in actually "jumps" the FPR.  You may
have been getting fuel with the injectors off due to residual pressure.

Try it with the FPR socket "jumped" with a short section of wire between
the two larger slots.

If your injectors are original, they are certainly due for replacement 
anyway, though.  $56 each is not too bad, especially if that's with the 
new green viton seals installed.  I doubt you could find them much cheaper.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/]