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Re: [T3] Newbie with question on stock FI

On 14 Feb 2005 at 20:43, Jim Showker wrote:

> I just walked down the hill and bought the car.  When we tried to start it a
> few days ago, it wouldn't start. turned over but wouldn't light off. They
> seller is convinced that there is something either wrong with the "brain" or
> with the wiring.  The symptoms are that it runs rich.  He went so far as to
> disconnect two sensors and mount potentiometers on the dash that he can
> adjust for whatever the parameters are.  My first reaction was that there
> was something wrong, as I remember reading about the EFI way back when and
> how it was extremely reliable, etc. etc.  How long are the injectors good
> for?

Running rich is one of the classic symptoms that has a couple of standard, and 
cheap fixes.

First thing to do is get in the car and turn the ignition ON. You should hear a 
relay click and then a second click about 1 second later. Between clicks the 
fuel pump in front should run. If you don't hear this exact sequence then there 
is a wiring problem. Let us know what you hear and we can go from there..

The pots on the dash are something you should get rid of and put back to 

> The point about maybe not rebuilding the engine is well taken.  I could very
> easily do a compression test and just pull it out, clean it up and check for
> an oil cooler leak, which it looks like it has, and maybe keep running it.
> I'll post more when I get a chance to really check it out.

I wouldn't pull it until you get some experience with it and run it a bit. 
That's the only way that you'll know what it really needs. Otherwise you may 
discover that you're removing it a second time just to correct something minor 
that could have been fixed the first time around.

> What books are still available for the T3's,  and which would you recommend?

This is the one you need to start with. It's still in print, but only early 
printings have the wiring diagrams in color. Used ones are out there.

Volkswagen Official Service Manual
Type 3 Fastback and Squareback 1968-1973
published by Robert Bentley, Cambridge, Mass, 1974
ISBN 0-8376-0057-X / LPV 997 383 / VSQU
(excellent book, complete and well written)

These are very good for the FI, but are out of print and hard to find:

Volkswagen Fuel Injection Technical Manual, forth edition
(covers D-Jetronic Type III, IV, 914)
published by Henry Elfrink, Los Angeles, 1972

I may have a decent copy of each available for sale. I buy them up whenever I 
see them, just because I don't want them to end up in the trash.

There are other good books out there, but there are lots which are not worth 

Jim Adney
Madison, WI 53711-3054

List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org

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