Starting issues in 94 Yukon 5.7L

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Paul-ish

TYF Newbie
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Mar 4, 2014
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Hi there,

I recently bought a 94 Yukon that is in beautiful shape. No rust, No ripes in the interior and you could almost eat out of the engine compartment.

It had been sitting for around 8 months when I got it. It had hardly any fuel in it. I test drove it a couple times before buying it and it ran great.
But...

Yesterday(A week later) After it had been sitting outside threw a brutally cold few days I went to fire it up and no-go.

First off the battery was dead so I tried to jump it. Fuel gage reads right on E So I threw in a couple gallons out of a jerry can. (also warmed it up with the block heater for a couple hours...)

It cranks over ok... I can hear the fuel pump and the starter spins the engine fine but it wont fire. It sounds like it wants to, It sounds like it comes really close every couple spins. Did this several times with no luck.

I'm not sure if it's a fuel issue or spark, I assume fuel as it had old gas and was so close to empty...
I've never had one of the TBI injection systems before... Can I prime it like a carberator?

What's the easiest way to check the fuel and spark system on these?
 

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