Starting problem - need help :)

[michasiek]

Hello everyone. My name is Michael and I come from Poland sooo... I would like to ask you to forgive me my english - it won't be perfect as yours

I tried to look for information on polish MX-3 forums but I didn't find right answers for my problem.. I didn't find any answer though...

Ok so! I own Mazda MX-3 1992 1.6 16v SOHC 88PS and I have problems with starting it.

- When car stays unused for about 5-6 hours or more and then I try to run it I almost always runs at first touch. I have no problems with starting.
- When I turn engine off and start again in 1min or either 30mins car runs also perfectly
- But! when car stays for about 1 hour to more or less 4-5 hours unused but earlier was used I have problems with starting. I'm pulling and holding key in starter to run it but there are problems with it unless I slightly press acceleration pedal. Then it starts and situation comes around.

To sum up.. cold is ok. Hot but just turned off is ok, but warm engine turned off earlier need pressing accel. pedal to run.
Cables for sparks and sparks are new - all NGK parts.

Ehhh I have no ideas where to find the solution so here I am in here
Maybe someone have same problem? Or some1 figured answer out?:D


Thanks a lot for everything.
Best regards,
Michael - Europe/Poland

[ModMX3 - (Carmaster2005)]

Try testing your temp sensor , Maybe try a search for hei , a common temp. related no start problem. I cant really understand what your trying to describe.

[bawolvesfan]

my car did something very similar and after lots and lots of parts being replaced i found it was the fuel pressure regulator...

[1992blazeredgs]

I agree with bawolvesfan it sounds fuel related. I would check your fuel pressure regulator like he suggested, and also the fuel pressure regulator selenoid. The selenoid is designed to help boost fuel on warm engine restarts. Make sure you dont have any vacuum leaks, than check to make sure it is working electrically.

Nate