[urq] urq Hot Start Issues

[laraa at sympatico.ca]

Addendum to your post Mike : when warm, the cold start valve do fire a bit,
via the hot start pulse relay in the ceiling of the passenger glovebox. If
you hear carefully, you can hear it cycling when cranking the engine.
Especially if there is a no start condition... 

Louis-Alain

-----Message d'origine-----
De : urq-bounces at audifans.com [mailto:urq-bounces at audifans.com] De la part
de Mike Sylvester
Envoyé : 19 février 2014 10:14
À : Ken LiPani; urq at audifans.com
Objet : Re: [urq] urq Hot Start Issues

Typically hot start issues with CIS are vacuum related. 
When cold, the cold start injector will fire, when warm it will not, so if
you have a vacuum leak there is not enough vacuum to lift the throttle
plate.  If the throttle plate doesn't lift the engine gets no fuel.
You can demonstrate this on a normal running car by removing the oil fill
cap and try to start the car.  You get the same crank but no fire.

A way to prove this is the problem,if you have 2 people and a 3mm allen
wrench, insert it in the CO adjustment and when the engine is cranking angle
the wrench and lift up.  This will manually lift the throttle plate and the
engine will fire.

Mike