Won't start after its hot

[djkeith]

Hi,I'm having problems witht the car not wanting to start after it has been ran for awhile.I moved the fuel/air sensor that was located on the cold air intake and placed it into cylinder 5 as to what Pro M said to do.I will list my mods that I have done so far. I need some sort of idea of what direction to go.

Edelbrock Victor 5.0
AFR 185 heads
Lunati Cam 232 duration 550in/564exhaust
DSS Flat top Pistions
30lbs injectors
80mm Pro M mass air\
Crane Cams Hi6 w/ LX92
75mm Throttle body off of Fox body 93
Mac 1'3/4'' equal length shorties
Mac Power Chamber
G Force Transmission

I havn't changed to factory computer yet, I have the check engine light coming on also.I tried to turn the fuel pressure down to 35lbs but the car ran really crappy, I turned it back up and its running rich.I drove the car today and when I stepped on it at WOT it ran the rpms up then acted like it was cutting out and fell on its face. I changed out the plugs again and put back the sensor on to the cold air induction today I let it run for about 5 minutes and check the plugs after I shut it off and they were starting to carbon up. I noticed when I shut the car off that it doesn't hold pressure in the fuel line by watching the gauge that I installed on the fuel rail.I could get the pressure regulator to turn down any past 38lbs. I'm completelly lost .

 

[wytstang]

Sounds like your fuel pump is going. Try to prime the pump 4 times before to try to turn it on. If it starts right away after the priming your fuel pump is bad. If you don't have a bigger fuel pump get one 255lph.

 

[djkeith]

I have a 190 fuel pump on there , its not more then a year old

 

[1105]

there you go with your cylinder 5 thing again... what the hell are you talking about there???? And again.... there is NO air/fuel sensor on the CAI... last time I checked no fuel was going through it.... only air, so what exactly are you talking about?

your car isnt supposed to hold fuel pressure, it gets sent back to the tank

My car would take forever to start after it had gotten hot, not sure what the reason was behind it, and it would want to stall right after I started it up when its hot. I just changed out my old warn out sock injectors for some 42's and so far I havent had that problem.... Did you buy used injectors? I know with 42's if you dont go in and change the computer settings for fuel vs ect cranking pulse width the car will not start when its hot with the larger injectors.... Dont know if it applies to the 30lb injectors you have or not.

 

[djkeith]

Ok I'll have to describe the sensor alittle better, It just takes air readings. I put that back into its original spot on the air intake tube leading to the throttle body. I talked w/ Pro M and they were the ones that had given me the idea to move it to the lower intake in port runner 5, there was actually a spot on the intake to take out the plug and place the sensor into there. Check it out on the Pro M website its in there tech advice. You made a good point about chyanging injectors, I went from 24's to 30's so I had to change the Mass air also. I'm thinking its the computer I still have the stock computer at this point. I'm leaning towards getting a tweecer or PMS. Thanks again for the help.