SPONSORED LINKS

Fuel injection not working properly

Tiny
MAGIC138194
  • MEMBER
  • 1988 CHEVROLET TRUCK
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 157,000 MILES
My fuel injectors spray even without the wires hooked up and the passenger side sprays a lot more than driver's side. Brand new injectors and gasket kit. This is on the truck listed above k1500 pickup with a 5.7 liter 350 with throttle body.
SPONSORED LINKS
Monday, March 14th, 2022 AT 4:09 PM

1 Reply

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,750 POSTS
Hi,

If you are getting fuel with the injector disconnected, it sounds like you have the fuel supply reversed. As far as the injector, the ECM actuates the injector solenoid, the normally closed ball valve is lifted off its seat and pressurized fuel is injected in a conical spray pattern at the TBI. If it's disconnected, that can't be happening.

So, there is a fuel supply to the TBI and a fuel return. Confirm they aren't reversed. I attached a pic below showing what I'm referring to.

Let me know what you find.

Joe

See pic below.
Image (Click to make bigger)
Thumb
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, March 14th, 2022 AT 8:29 PM

Please login or register to post a reply.

Related Throttle Body Gasket Content

VIEW MORE

Sponsored links