87 silverado 4x4 Flooding won't stay running sat for 4 years. New fuel pump new plugs cap and rotor. Runs for a minute or two stuttering real bad

snows4x417

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Allan
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1987
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V10
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350
I'm new at forums. I usually just read them but I'm trying to get my old truck running for my 15 year old son. I've replaced the fuel regulator diagram and gasket. She has a very erratic fuel pressure of 65 psi engine side just after the new filter and pump. New and old plugs seem very wet and smell like gas. She has grey smoke and I 5hink floods out after a minute or two. I could use some advice.
 

WP29P4A

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Reno Nevada
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Mike
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Sierra
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Does it have EFI and dual gas tanks?
 

Doppleganger

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OH-MI: Just like it sounds
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If it sat for 4 yrs...whats the gas like? I had a car that was stored with a full tank for 3 yrs and wouldn't start. Got 2 gal of premium and 3 bottles of 91% isopropyl - after awhile got it sputter-started and it stunk - lots of exhaust, then smoothed out and was right as rain.
 

snows4x417

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Pulled tank and replaced gas and pump.
 

snows4x417

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I think 4 years ago I replaced the fuel relay then gas spilled everywhere in the throttle body. I bought the rebuild kit and replaced the injector retaining gasket a regulator diaphragm but quit and left for for years...dumb! Bought another kit after the replacing the fuel tank switch she started and now runs terrible shutters smokes and then dies. Won't start again for hours or till the morning. Coolant temp was new I think I changed the map too. Gotta be something simple. Not sure how to check a plugged fuel return line?
 

snows4x417

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Allan
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1987
Truck Model
V10
Engine Size
350
So I got her running. I was sure of the problem but had the thought; what if I shut the fuel pump off will she lean out just before running out of fuel? The quickest way I could think of was to swith to the bad (left side) I toggled the new switch and she came to life. Every pipe on her smoked but ran great. Next is fluids. Any advice experience on the best way to not ruin a rear-end or tyranny would be appreciated 12 bolt Eaton possy rear-end, 700R4, 208 new process transfer case.
 

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