1992 Injector question.

voodoo18

Member
Jan 14, 2020
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11
13
Western NY
1992 5.0 injector question.
When checking injector pulse with a text light, how often is the pulse supposed to be? Is the light supposed pulse fast or once per revolution?
 
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a91what

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Mod Dude
Apr 6, 2011
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That depends on what ECU you are running and how it is setup.
Sequential will pulse once per revolution
Batch can fire 1-4 times per revolution
 

voodoo18

Member
Jan 14, 2020
29
11
13
Western NY
Thanks. It is a stock A9L computer. Hopefully it is doing the batch because is flickers off and on when I crank it. I pulled the no. 5 plug and held a q tip in the cylinder and turned the engine over like to start it. The Q tip came out dry after several revolutions. I have fuel pressure about 36-38 lb. No start. I think the regulator may be the problem. I have spark right down to the plug but still no start. I have done all the other stuff, checked the fuel pump, changed the filter and son on. Still trying to get it started.
 
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