foxbody420

I jaw a 91 fox body that starts when it wants to and runs great when is running new to the ford gang any suggestions?

Evil_Capri

Moving to 'Fox' section, but will leave a link for a day . . .

Also, I don't understand your question. . . (I'm guessing spam!)

skunk21

Uhmm yeah impossible question to help with not enough info. does it do it when its hot or cold, sitting overnight or after driving it and trying to restart it. need much info.

foxbody420

After I run it it won't start back up like it is vapor locked an hour later it will sitting over night it won't start in the morning little either and she fires right up

Tirefryer

How is the compreshion, after it warms up does it loose compreshion. I had a motor do the same thing... New boar and pistons fixed the prob for me. I had 100lb cold and 50lb hot so if i shut it off it would never start till it cooled off... Just a thought.....

skunk21

could very well be a fuel pump on its way out. doesn't sound like a spark problem but more fuel. what is the fuel pressure at idle and under a load.

wildcobrar

I have seen TRI modules go open circuit when hot and fire up when cold. When the vehicle does not offer to start check for fire at the plugs to elliminate this possibility.

Also check to see if you have fuel pressure at the shrader valve when you have a no start condition. This will tell you if you have a fuel related problem.

Check coil and distributor cap for corrosion on the tower teminals. Another cause if it if spark related could be a pick up coil going open circuit once it is hot. Again verify for spark when engine is a no start.

Joe

djsmillions

Another question if you have very little fuel coming out the shrader valve and I mean a drip, is that mean its a fuel pump problem?

skunk21

If it is just tribble w/o a pressurized squirt then there could be an issue. it will loose some of it pressure has it sits and after you press the schrader valve also. use a gauge and do a key on test.

also shot an answer in the sn95 V6 section.