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Tbi swap on my 1972 gmc pickup 350cid. Pretty much all

hooked up to do a...
Tbi swap on my 1972 gmc pickup 350cid. Pretty much all hooked up to do a test fire. Wont fire because no fuel coming out of injector. I can hear the fuel pump going.Only aftermarket parts used, cheap eBay distributor, expensive fuel pump. I don’t remember the brand. It was one of the recommended pumps on the forums.
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Answered in 1 minute by:
3/18/2018
Jerry Newton
Jerry Newton, Chevy Technician
Category: Chevy
Satisfied Customers: 5,694
Experience: ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.
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Are you getting injector pulse at the injector connector?
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Customer reply replied 4 months ago
I did not check. We were thinking it may be a ground issue. As we were cleaning the grounds with the key on, the injectors would fire. But once connected to the same spot as the battery ground, they wouldn’t fire anymore.One thing I did notice is that the starter took a second to start cranking after turning the key.
Customer reply replied 4 months ago
No injector pulse

OK, are you getting spark?

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Customer reply replied 4 months ago
No spark.

OK. Do you have power at the pink wire going to the distributor cap?

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OK, white wire at coil, do you have a pulsing ground on this when you are cranking the engine? Attach a test light to B+, probe the white wire, and crank the engine. Test light should flash.

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Customer reply replied 4 months ago
Does not flash.
Customer reply replied 4 months ago
That connector was loose. I snapped it in place and it started right up.

Outstanding!

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Jerry Newton
Jerry Newton, Chevy Technician
Category: Chevy
Satisfied Customers: 5,694
Experience: ASE Master Technician, L1, Master GM Technician. Over 20 years of bumper to bumper GM experience.
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