1990 E30 M40 hot start problem

I have an 1990 318i that is hard to start when the engine is hot but
start with no problems when the engine is cold (in the morning). When
the engine is hot, if I turned it off and started it again almost
immediately, the start is good. But if started it, let's say after 15
minutes or more, I have to start it at least 4 times before the engine
will be running.

I recently change the fuel pump and fuel pump relay (Feb 2006), so the
cause is not in the fuel pump. I take it to the local bmw shop, and the
mechanic suspect a failure in the FPR, coil, coldstard, fuel filter or
spark plug might cause those kind of problem.

Has anyone experience similar with my problem? Any advice will be
highly appreciated.

Thanks in advance.

Riyandi
'90 318i

wrote:

>I have an 1990 318i that is hard to start when the engine is hot but
>start with no problems when the engine is cold (in the morning). When
>the engine is hot, if I turned it off and started it again almost
>immediately, the start is good. But if started it, let's say after 15
>minutes or more, I have to start it at least 4 times before the engine
>will be running.
>
>I recently change the fuel pump and fuel pump relay (Feb 2006), so the
>cause is not in the fuel pump. I take it to the local bmw shop, and the
>mechanic suspect a failure in the FPR, coil, coldstard, fuel filter or
>spark plug might cause those kind of problem.
>
>Has anyone experience similar with my problem? Any advice will be
>highly appreciated.
>
>Thanks in advance.
>
>Riyandi
>'90 318i
>
hmmm.... might be an idea to check the fuel pressure regulator
too.. it's at the end of the fuel rail.