Help! hot start

[skal7827]

I am sure this question has been answered before? Since I am new to this great area devoted to a great car I hope someone can give me a quick replace this module type answer? I have a 94 that does not like to start when the engine has been warmed. If the car had a carb on it, I would say that the engine has vapor lock, and just keep your foot on the gas pedal on the floor and it will start! I hope I have explained the problem?:eyerole

 

[Schrade]

I am sure this question has been answered before? Since I am new to this great area devoted to a great car I hope someone can give me a quick replace this module type answer? I have a 94 that does not like to start when the engine has been warmed. If the car had a carb on it, I would say that the engine has vapor lock, and just keep your foot on the gas pedal on the floor and it will start! I hope I have explained the problem?:eyerole

Welcome onto the boards there...

You have low fuel pressure in all probability. (The ''quick replace 'x' module" is NOT a good repair / maintenance approach.)

You need to get a fuel pressure guage, and test the static fuel pressure (motor off). It's just like checking air pressure in a tire, so don't be afraid. You need also to check pressure leakdown time.

A leaking injector, and low pressure, makes poor atomization. On a cold motor, that's fine (think cold-air induction - fuel vaporizes better in a cold environment). In a hot motor, that don't happen, and it's hard to start. The vacuum hose to the fuel pressure regulator can also leak, making low pressure - easy to check. Think of how water dribbles out of the garden hose with water SLIGHTLY turned on...

Teacher OUT!!!