Well ive being having this problem for while of having hard start up on my car. I have already replaced the fuel pump, and injectors and im still having the exact same problem. I have a 91 305tpi, once the car starts up it runs fine its just takes a while to start around 10 seconds of cranking. Any pointers on what i could check id appreciate it.

 

Very common problem
Highly likely the pump relay is not working to prime the rails key on as it should so you are waiting for the backup OP pump
switch to run the pump and build pressure while cranking over

Check the relay works for 2 sec key on , and that the system primes and holds correct fuel pressure there after

 

It does prime for the first two seconds when i turn the key on position. I dont have a gauge to check it right now but last time i did that i would get 45psi and drop slowly to about 35psi

 

Maybe time to do the prime and hold test again ?
Quick test would be to hot wire the pump to run full time ( so you have continuous rail pressure before cranking ) and see if it starts faster.
If not , it is not a fuel problem

Putting 12V to terminal G of the ALDL connector runs the pump


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Ok so if i get my power probe and put 12v to the pin G the pump should run non stop?

 

Correct.
The only proviso being terminal G goes through the closed contacts
( red wire into relay . diagram below ) of the pump relay so they have to functional

If the G terminal fails you can always jumper the pump connectors (org to tan /wht) on the relay connector to achieve the same result


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Oh ok i will try that asap once it stops raining.
Thanks.

 

ok well today i noticed when i turned the key into on position it did not turn on the pump and had the long cranking after that. Still havent tested it with putting 12v to the g terminal though.

 

OK well i just tried doing what you said putting 12v for the fuel pump and i had the same exact problem. But once i started the car i turned it off right away and kept cranking it and it would start right away. I might make a video since im not good at explaining the problem.

 

Was the pump running full time?

What was the fuel pressure at the engine?

 

yes it was running full time.
pressure was at 44psi while cranking
I was thinking could my timing make it take long time to start?. Or something with my ignition because once it starts, i have to rev it up to about 2500-3000 rpm or else it will die right away.