No start

BERNIE N

MEMBER
2004 BUICK RENDEZVOUS
3.4L
6 CYL
FWD
AUTOMATIC
200,000 MILES

Hi, I have what seems to be a stumper. Our car had a stumble so I removed the coil to access the three rear plugs and now it will not start. The fuel pump kicks on but its not getting fuel to the engine as a squirt of starting fluid will start it. Are any of the plugs on the coil anything to do with injectors?

6 Replies

HMAC300

MECHANIC
48,601 POSTS

If the ECM does not see an ignition cycle the injectors will not turn on. check fuel pressure with a gauge as you should have that and then check for loose or disconnected wires as well as blown fuses under hood finally check fuel pump relay it will be in under hood fuse box. auto parts rent gauge for fuel pressure. See link.
https://www.2carpros.com/articles/how-to-check-fuel-system-pressure-and-regulator

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Thursday, April 18th, 2019 AT 1:52 PM

BERNIE N

MEMBER
4 POSTS

You can hear the pump cycle & it ran before moving the coil. I'm just wondering if any plugs from the coil cycle the injectors. Being in a hurry I never unplugged anything so I'm thinking I may have broke a wire somewhere, or is there a ground in the back that I can't see possibly?

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Thursday, April 18th, 2019 AT 1:52 PM

HMAC300

MECHANIC
48,601 POSTS

The grounds are mostly on the back of cylinder h eads and front so check those. Just because you can hear pump run doesn't mean it is giving sufficient pressure. So it should be checked

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Thursday, April 18th, 2019 AT 1:52 PM

BERNIE N

MEMBER
4 POSTS

Thank you, I will test pressure just to be certain.

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Thursday, April 18th, 2019 AT 1:52 PM

BERNIE N

MEMBER
4 POSTS

Sorry to reply late but its my day off. According to the gauge I have just shy of 50 psi when key is turned. As I said, this car ran before me removing the coil. Is there a way I can check injector pulse using a test light?