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Ask GM Tech (Cam) Your Own Question
GM Tech (Cam)
GM Tech (Cam), Chevy Technician
Category: Chevy
Satisfied Customers: 15201
Experience:  GM Grand Master Technician 2007. 14 years experience.
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I have a 1989 chevy 7.4 3500, this morning I drove it fine

Customer Question

I have a 1989 chevy 7.4 3500 , this morning I drove it fine then this afternoon I was having a hard time starting it then it ran for 30 secs then shut off and wont restart . It has new spark module from autozone about 2 weeks ago . What do you think the problem is ? It was having some hard start issues previous but after the module I thought it was cured .
Submitted: 1 year ago.
Category: Chevy
Expert:  JOHN aka Eauto replied 1 year ago.

Does it have spark? Does it have fuel pressure?

Customer: replied 1 year ago.
I have not re checked for spark , I wouldn't see any reason for it not to have spark as I said it has a new module , not sure how to check for fuel preasure ?
Expert:  JOHN aka Eauto replied 1 year ago.

pull the air cleaner and have some one crank it see if the injectors are spraying

Customer: replied 1 year ago.
I will check that now .
Expert:  JOHN aka Eauto replied 1 year ago.

ok