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Discussion Starter · #1 ·
I have a question i have a 1987 mustang lx i did a 2.3 efi to 5.0 carb swap i put a holley blue pump on and changed out fuel filter for carb and put fuel reg and gauge on to carb when i run the car enough to get warm and shut it off it will not start it will crank but acts like no spark let set for approx 20min then it will start no problem. I did swap over to durasparkII and changed coil and put a ballast rtesister on, they are all new ? can anyone help?
 

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Discussion Starter · #3 ·
i do have spark somone said maybe vapor lock? i used factory fuel lines up to fire wall then use rubber gas line up to regulator then to fuel presssure gauge?
 

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so are you have fuel pressure when it will not start? is fuel entering the intake from carb? hard to say it is vapor lock on a carb engine i hope it did not get that hot to turn the fuel in the bowls to vapor. i am thinking it is flooded. pull the plugs and see if they are wet
 

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Discussion Starter · #5 ·
i have not checked the fuel pressure when i shut it off to see if it is different than what it is when cold. i know when i turn the engine over when warm it cranks but wont fire one day a guy was looking and cranked and cranked untill the batt was dead i said for get it later on that night he said try and start and i did it backfired then fired up. how can you tell if it is vapor lock will the fuel pressure gauge show a difference?
 
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