924Board.org

Guest · Posted: Thu Mar 02, 2000 3:45 pm Post subject:

From: William
Email: techno@angelfire.com
Date: 02 Mar 2000
Time: 16:45:08

I am having trouble with my 924 starting, I think
it has something to do with the cold start injector, I tried bypassing it with a straight hose and the car fired right up but idled like 3,000 RPM even with the TB adjustment all the way down! But when the cold start is all hooked up its really hard to start and sometimes dies for about a minute or 2. Even when its warm and you try to start it! Is there something wrong with the cold start injector?

Guest · Posted: Thu Mar 02, 2000 7:38 pm Post subject:

From: chris oz
Email: turbo_924na@hotmail.com
Date: 02 Mar 2000
Time: 20:38:44

just a guess,but maybe your thermo time switch
is gone.
pull your cs valve out wire it direct to the battery turn over the car and see if fuel comes out if it does and in a nice cone shape i would
think your csv is fine and maybe its your thermotime switch.but hey thats just my guess
good luck bill
chris

Guest · Posted: Fri Mar 03, 2000 12:34 pm Post subject:

From: Vaughan
Email: vscott39@hotmail.com
Date: 03 Mar 2000
Time: 13:34:45

It sounds to me like what you're bypassing is not actually the cold-start injection valve, which is located at the back of the intake, and has a fuel as well as an electrical connection; rather, it sounds like you're bypassing the aux air valve which is only a throttle bypass for cold starts.
This you've confirmed by bypassing it; this is the equivalent of a really cold start.
The way the thing works is that it's completely open when the unit itself is very cold; as either the engine warms up, or as the bimetallic strip inside the unit heats up by electrical current, then the valve will close, and all air feeding the engine passes through the throttle body.

So, if what you described is the case, it sounds as if it's not opening fully. The easiest way to check this is remove it from the car and stick it in the freezer for an hour or two - you should then be able to see through it. If not, it's stuck and will either have to be replaced or fixed (if you can soak it in WD40 and get it moving again).

Good luck, feel free to come back with any more questions...

Vaughan