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1997 GMC Savana fuel injectors

Tiny
DAN176
  • MEMBER
  • 1997 GMC SAVANA
  • 300 MILES
On 97 GMC 5.7 L I have 55pounds of fuel pressure but will not start does not even try to start. I pulled the injectors and hooked it back up and watched the injector's and they did spit out a little fuel. But I don't know if was the right amount.
Thursday, August 22nd, 2013 AT 6:24 AM

13 Replies

Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Do you have spark?
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Thursday, August 22nd, 2013 AT 6:44 AM
Tiny
DAN176
  • MEMBER
  • 8 POSTS
Yes. I gave it some starting fluid and it tried to start.
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Thursday, August 22nd, 2013 AT 7:05 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Have you checked for injector pulse yet?
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Thursday, August 22nd, 2013 AT 1:40 PM
Tiny
DAN176
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  • 8 POSTS
Yes I did. I took off the connector and hooked up my volt meter and cranked it over I seen the 12 volts was on and off.
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Friday, August 23rd, 2013 AT 3:56 AM
Tiny
DAN176
  • MEMBER
  • 8 POSTS
Also I had took the intake apart and pulled out all of the spray nozzles and cranked it over and watched the nozzles for the spray. It spit out a little but not much. Was not sure how much I should see.
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Friday, August 23rd, 2013 AT 4:08 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
Have you checked for codes yet?
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Friday, August 23rd, 2013 AT 7:59 AM
Tiny
DAN176
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  • 8 POSTS
Yes and no codes.
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Friday, August 23rd, 2013 AT 8:36 AM
Tiny
DAN176
  • MEMBER
  • 8 POSTS
Are you going to reply?
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Thursday, August 29th, 2013 AT 12:43 PM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I am so sorry I haven't replied I haven't been getting all my email alerts so I have been behind in my replies because of it. If it starts with carb spray and not on its own like it should sound like a fuel issue. Looks like we have good fuel pressure. The injector power and ground pulse Are there. So not much fuel was spraying when you checked the injectors? Those spider types have tons of issues. Do you still have it all apart?
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Thursday, August 29th, 2013 AT 12:59 PM
Tiny
DAN176
  • MEMBER
  • 8 POSTS
Yes I put it back together. Also to let you know the van sat for a year and was not started at all. When I had the intake apart and tried it it did not seem that the fuel was enough and it was not a good mist.I did clean the tips when I had it out.
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Thursday, August 29th, 2013 AT 1:41 PM
Tiny
SATURNTECH9
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After you cleared the nozzles did the fuel have nice spray And more fuel coming out?How did you clear the nozzles?Did you use compressed air?Also did you try compressed Air where the fuel line hooks to make sure the inlet etc Are all clear?
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Thursday, August 29th, 2013 AT 1:56 PM
Tiny
DAN176
  • MEMBER
  • 8 POSTS
All I did when I cleaned them was to wipe off the out side. I did not pull them apart. But if I do will it mess up the small hoses when I pull them off? When I had it apart I pulled off the regulator and took out one of the injectors and I looked at the screen on the injector and it was clear. Should I use my air compressor to blow them out?
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Friday, August 30th, 2013 AT 7:41 AM
Tiny
SATURNTECH9
  • MECHANIC
  • 30,869 POSTS
I blew one of those out many years ago if your not getting a nice fine mist then something mist be clogged up Especially since you said we have power to the injectors a ground pulse while cranking and good fuel pressure. You also said it starts on a prime but not without. So it has to be something wrong with the injector system. The spider could be brittle from all the years so no guarantee something won't break when unhooking each injector to blow it out.
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Friday, August 30th, 2013 AT 5:58 PM

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