Hard Start and Rough Idle

[H7ERO]

have you checked your valve clearances? i had problems starting once because all the inlet valves clearances had closed up but ince it had started the car drove fine

[Bad_Dog]

H7ERO Wrote:have you checked your valve clearances? i had problems starting once because all the inlet valves clearances had closed up but ince it had started the car drove fine

Nope. I haven't since the engine has "a perfect sound" once started: No knocking, no clicking, no ticking :wink:

The distributor is put in the exact position. It is NOT a tooth ahead or behing.
Once started the things become better. The next starts are much better. Starts almost immedeately. There is a hesitation on idle +- 200rpm.
Until the next day. The car woldn't start.

P.S. In bulgarian the noun 'car' is female gender

[Apolan]

thats how it is in all languages =) regardless to the grammar..

[Bad_Dog]

Some additional info.
Yesterday I connected E1 and T terminals of the check connector. Tried to start - no difference.

However - i checked the errorcodes and it read
___||_||_||_||___||_______ - and that means TPS problem.
I had previous problems with the TPS (Part No 89452-12050) and replaced it with a TPS from a BigPort Redtop (Part No 89452-12040). It worked OK. I don't think this is the problem for the hard start but I'll put the previous one for a try.

[Bad_Dog]

The problematic car:

[Bad_Dog]

Cold start problem found. Cold start switch faulty. It worked the first time i tested it, but the next time didn't function properly. And most of the time time doesn't.

Probably it would be helpful to know that the cold start injector works only while the starter works. The afterstart enrichment is done by the 4 normal injectors and the AAV.

P.S. Only the slight hesitation (+/-100 rpm) on idle remained unsolved.