Re: [86 8v, JH] engine start problems

["Randy B" <scirokn81@email.msn.com>]

>On Mon, 14 Feb 2000, Randy B wrote:

>> Sounds like the auxiliary air regulator if you have a JH motor, and
>> you are running CIS injection.


Oliver wrote:
>I'm pretty sure the regulator is working okay, though I haven't been brave
>enough to take it off (not much room in there, since I also have the
>cruise control vacuum pump there). While the engine was running poorly
>initially, I pinched the air line from the regulator to the intake
>manifold and it reduced the idle speed even more, indicating air was
>indeed getting through.

Yeah, that would lead me to believe that it is working also.

>And remember the idle *increased* after about ten
>seconds, while I would expect the idle speed to decrease when the air
>regulator closes (less air getting into the intake manifold).

True, missed that one.

>The fact that the idle speed increased as if a switch had been thrown (not
>gradual at all) made me think the thermo-time switch had turned off the
>cold-start valve (as it should). If the cold-start valve wasn't working
>properly, causing the engine to run badly, then perhaps when it turns off
>the engine would run better...

Possibly a bad thermo time switch, intermittent operation, or a loose
electrical connection ?

>Anyone know if a cold-start could fail this way?

So far I haven't had this happen yet, but I have a dozen or so spares
if you want to try a few. Let me know.

>Thanks for the quick response!
>Oliver


No problem.

Randy B.
Cosmos 81 Scirocco S - soon to be 2.0L 16V
Mars 81 Scirocco S - t t 1847cc





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