[Shotimes] Random Hard to start issue "flooded"

[clubairth@bellsouth.net]

Maybe the IAB is stuck closed (sometimes,occasionally) and no air is getting 
to the engine during cranking. So when you floor the gas pedal it shuts off 
the injectors. But they have already fired from the previous tries. You now 
have air and fuel and it starts? But I guess your IAB is new since you have 
a factory crate engine?
.
.



>I agree the pump is older, and I'm planning on changing it this summer
> during routine maintenance.
> But there is just something about an old/weak fuel pump causing a 
> "flooding"
> condition that just doesn't sit well with me. Can anyone explain it?
> Is something else bad also?
> Lee
>
>
>> Lee:
>>  No but when I read this I got suspicious!
>>
>> " Car: 94 MTX; brand new factory crate engine, original: injectors, fuel
>> pump,O2's (100k)".
>>
>>  The factory pumps are not that great when new and now yours is 12 years
> and
>> 100K miles old. After 100K miles on a fuel pump I consider replacing it 
>> as
>> just normal maintenance.
>> .
>> .
>> .
>>
>>
>> > Has this ever happened to you? Did a new pump cure it?
>> > Lee
>>
>> >
>> >> Leigh:
>> >>  I think it's the Fuel Pump? Have you done a volume test? Should get
>> >> about
>> > a
>> >> 1/2 of a quart in 30 sec.. I like this guy for fuel pumps:
>> >> http://www.autoperformanceengineering.com/
>> >> .
>> >> .
>> >>
>> >>
>> >>
>> >> >I need the help of someone who's been thru this one. Any ideas on how
> to
>> >> > troubleshoot?
>> >> > ..
>> >> > Symptoms: Random no-start or hard to start; appears flooded, and
> starts
>> >> > easily
>> >> > with foot on floor to clear the "choke". Fuel pressure sometimes
> drops
>> >> > while
>> >> > sitting 15min to 1 hour to zero psi.
>> >> > ..
>> >> > Car: 94 MTX; brand new factory crate engine, original: injectors,
> fuel
>> >> > pump,
>> >> > O2's (100k). New: fuel/air filter, IAB, CID, CPS, wires, plugs, etc.
>> >> > NO codes.
>> >> > ..
>> >> > I'm thinking A) leaking fuel pump and/or check valve B) leaking
>> >> > injector
>> >> > C)
>> >> > leaking fuel pressure regulator.
>> >> > ..
>> >> > Any other ideas?
>> >> > Or ideas to troubleshoot?
>> >> > Lee