What is the proper way to test Fuel Pressure Regulator/fuel pump

I posted a while back about my hesitation problem (see below) One of
you suggested I test and or replace the Fuel Pressure regulator. How
is this done. I have 190 psi compression (all 4), Vacuum is 18 in Hg,
fuel pressure still unknown, my guage only goes up to 15 psi so I will
have to save that step for last. I have had this problem for months
now and don't think it is low fuel pressure because I don't think my
engine could have survived that long on a lean condition. What do you
guys think?
Thanks



Previous post
(e36 318is bogs down at certain throttle positions)

Hello all,
I have been battling a problem with my 93 318is for about 5 months

now. It runs strong when cold but as it reaches normal operating temp,

it seems to bog down when the accelerator is applied medium to hard. I

have learned to back of the accelerator just a bit and the hesitation
goes away, as long as I apply the accelerator slowly thereafter. I
have checked and replaced all old or worn vacume hoses. I have sprayed

carb cleaner around hoses to identify leaks. I have good compression
and burn no oil. (plugs are all normal) I have taken the Idle air
control valve off and cleaned it. If the fuel pump was weak, would it

I am not much of a mechanical authority - but I did have a recent victory
when it comes to getting my car running correctly.

My car was bogging down and losing power when I accelerated. It was a
problem that just came on all of a sudden

I replaced the "mass airflow sensor" - and very luckily that fixed the
problem. My car runs like new.

The mass airflow sensor should be located immediately downstream from your
air filter.

I got a rebuilt one for $125.00

- Ben



"daveck2" > wrote in message
oups.com...
> I posted a while back about my hesitation problem (see below) One of
> you suggested I test and or replace the Fuel Pressure regulator. How
> is this done. I have 190 psi compression (all 4), Vacuum is 18 in Hg,
> fuel pressure still unknown, my guage only goes up to 15 psi so I will
> have to save that step for last. I have had this problem for months
> now and don't think it is low fuel pressure because I don't think my
> engine could have survived that long on a lean condition. What do you
> guys think?
> Thanks
>
>
>
> Previous post
> (e36 318is bogs down at certain throttle positions)
>
> Hello all,
> I have been battling a problem with my 93 318is for about 5 months
>
> now. It runs strong when cold but as it reaches normal operating temp,
>
> it seems to bog down when the accelerator is applied medium to hard. I
>
> have learned to back of the accelerator just a bit and the hesitation
> goes away, as long as I apply the accelerator slowly thereafter. I
> have checked and replaced all old or worn vacume hoses. I have sprayed
>
> carb cleaner around hoses to identify leaks. I have good compression
> and burn no oil. (plugs are all normal) I have taken the Idle air
> control valve off and cleaned it. If the fuel pump was weak, would it
>