88 5kq - Intermittant Hard Starti

[Huw Powell]

> I may visit my local junkyard and get a spare hall effect sensor and 
> cold start injector. I'm inclined to think its fuel starvation during
>  a "no-start" start. The engine does start, but quickly dies. After 
> that, it only cranks.

That would seem to eliminate the cold start injector (they never go bad
anyway...

> Whats the trick to taking out the Hall sensor?

Get the whole distributor.

> I'm theorizing here, but it sounds like a lean condition during 
> start. 

Or even dry...

> Once a few cylinders catch, the sensor plate rises and more 
> gas is introduced thru the injectors. If I can catch it right, and 
> doodle with the gas pedal, the engine will clear up and start running
>  normally. 

It does sound as if the air plate might be sticking.  Have you opened it 
up and checked it for general cleanliness?

>  If I dont come up with anything today, I'll wire up the cold start 
> valve with a manual on-off switch, so that I can force extra gas 
> during starts.

Just remember that it is the ground that is switched, not the 12v 
connection (usually).

But I think the starting fluid has told you what you need to know - 
there isn't enough (or any) fuel when you are trying to start it.

Could the temp sender for the ECU be bad?  It might always "think" the 
engine is warm, so it isn't rich enough to start at first.

-- 
Huw Powell

http://www.humanspeakers.com/audi

http://www.humanthoughts.org/