Question about 2000 GMC Sonoma Extended Cab

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Hard to start, possibly fuel system problem

I have a 2000 GMC Sonoma 4.3 liter that is hard to start. Just had a full tune up including a plugs, wires, rotor cap and distributor cap and a fuel filter. Had a similar problem a 2 years ago and replaced the fuel pump. What are you thoughts on this problem. Could it be that the fuel pumps just dont last. John

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Check the fuel pressure. You should be at 60-66 psi for the injectors to fuel properly. Depending on where you are in the country, some areas have more moisture in their fuels that others. Try running a can of Techron fuel treatment every third tank of fuel. Make sure your getting fuel at a good station. Stations that do not maintain their tanks and buy discount fuels usually help shorten the life of fuel pumps.

Posted on Jun 01, 2009

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Posted on Jan 02, 2017

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