I have 91 Sonoma S15 it starst but its getg 2 much gas 2 the carb what is the problem

2000 gmc Sonoma v/6 Firing order, firing order for the 4.3L engine is 1-6-5-4-3-2.
Cylinder order drivers side 1-3-5 and passenger side 2-4-6,
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

4 3L firing order 1982 2005 Chevrolet 10 Blazer GMC S15 Sonoma Jimmy
Chevy Firing Order
2000 gmc Sonoma 6 Firing order Google Search Chevy Firing Order

Doing this kind of swap is never easy my friend. I've done many this way. Yes, you have to change the COMPLETE wiring harness from front to back and under dash. It really isn't all that hard, it just depends on how bad you want it to work right. So, change ALL from the headlight connectors to the fuel tank, and from the ECM to the instrument cluster. Even the instruments if need be. It WILL work. Patience Brother, patience. That's the key to getting all you want.

Shelia, 2000 gmc Sonoma v/6 Firing order, firing order for the 4.3L engine is 1-6-5-4-3-2.
Cylinder order drivers side 1-3-5 and passenger side 2-4-6,
Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."

4 3L firing order 1982 2005 Chevrolet 10 Blazer GMC S15 Sonoma Jimmy
Chevy Firing Order
2000 gmc Sonoma 6 Firing order Google Search

Chevy S10 - GMC S15 and Sonoma Stalling/Dying Problems - Car ...

forums.edmunds.com > Chevrolet > Chevrolet S-10
Dec 15, 2007 - 30 posts - ‎22 authors please someone..i need help.i have 1992 gmc sonoma 4.3 6 cyl 2wd .... I have a 2001chevy s10 4.3 4wd auto, it runs good until it's warmed up, then once it's ... the gas pedal causes bouncing on the tachometer and loss of power. ... when driving at a steady speed if I try to accelerate the engine tries to die

2000 GMC S15/T15 Sonoma P/U 4.3 liter V-6 VIN "X"
and
2000 GMC S15/T15 Sonoma P/U 4.3 liter V-6 VIN "W"





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For 1991 GMC Truck S15 4WD 4.3L TBI 6cyl...

Engine Oil Type/Weight/Capacity

3539
Application:
Oil for use in temperatures above 39 degrees
Note :
Pennzoil Premium Motor Oil HD30

Application:
Oil for use in temperatures above 39 degrees
Note :
4 Quarts without filter change

VALHD30
Application:
Oil for use in temperatures above 39 degrees
Note :
Valvoline Premium Conventional 30 Motor Oil

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I have two. A 91 s15 ext cab 5-speed 4x4, 4.3L with a flatbed and 89 s10 ext cab auto 4x4, 4.3L with a box. Make an offer around $500 and thier yours.lol

1995 GMC S15/T15 Sonoma P/U 2WD 2.2 liter L4 VIN "4"





1995 GMC S15/T15 Sonoma P/U 2WD 4.3 liter V-6 VIN "Z"





1995 GMC S15/T15 Sonoma P/U 4WD 4.3 liter V-6 VIN "W"



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Wow, sounds like head gasket &/or timing problem. First thing you need to do is a pressure test on cooling system to see if head gasket gone, then I'd do a compression test as well. Have you pulled any spark plugs to see what they look like?