SPONSORED LINKS

1989 Chevrolet Truck Engine Hesitation

Tiny
CFHIV
  • MEMBER
  • 1989 CHEVROLET TRUCK
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
My engine cranks long before igniting when cold and hesitates or stumbles during acceleration. I have changed the fuel filter. I have been told by a friend to look at the MAP sensor and throttle position sensor. I don't know what to do before spending money. I would like to do a fuel pressure test but I can't find an illustration showing me where to do it. I am having trouble troubleshooting this. It has stalled twice after a hot start up.
SPONSORED LINKS
Saturday, June 28th, 2014 AT 3:55 PM

3 Replies

Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
Fuel pressure you need an adapter to do it autoparts rent the gauge but may or may not have adapters. Yours shold be 9-11 psi. But check vacuum hose leading to map, and check base of tbi unit for a blown gasket that is a common problem. Squirt choke cleaner around it if it smooths out you found it. If check engine light is on scan for codes.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Saturday, June 28th, 2014 AT 4:09 PM
Tiny
CFHIV
  • MEMBER
  • 2 POSTS
Ok, thank you, but where do I attach the gauge to check fuel pressure? I don't have a schrader valve.
Was this
answer
helpful?
Yes
No
Saturday, June 28th, 2014 AT 4:22 PM
Tiny
HMAC300
  • MECHANIC
  • 48,601 POSTS
That is what the adapter is for you unscrew fuel line then screw adapter into it or however it hooks up
Was this
answer
helpful?
Yes
No
Saturday, June 28th, 2014 AT 4:30 PM

Please login or register to post a reply.

Related Engine Hesitate Content

Vacuum Leak Test and Repair
VIDEO
Vacuum Leak Test and Repair
Instructional repair video
Hesitation
GUIDE
Hesitation
An engine hesitation is an interruption of continuous power during acceleration. When a engine is hesitating it will cause the car to lunge or surge which will cause a...
VIEW MORE

Sponsored links