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1994 Z28, fuel pump?

Posted 07-03-2010 at 09:41 AM by 94QuasarZ
I have a 1994 Z28, I believe the fuel pump went out on it. The car had been hesitating for about a month. I changed the fuel filter, PCV valve, and MAF sensor. The car has fresh plugs and wires on it in addition to the aforementioned repairs. A few weeks ago I noticed it getting hard to start. Not long after that, it wouldnt start at all and it would expel fuel fumes out the exhaust. At one point, I was trying to jump it from when the battery had been drained from me trying to start it and when I turned the key to activate the fuel pump before starting it, the fuel pump made a weird noise. Like a trailing off noise, one it had never previously made as long as I've had it. I was also recently told by a fellow camaro owner that it has liquid fuel in the cyl. heads. What do I need to do to get it out and get her running again? Any help would be greatly appreciated.
Total Comments 2


If your cylinders are flooded with fuel you could disconnect the coil and injectors so no spark and fuel. Take the plugs out and crank the engine a few times. Avoid long cranking so you dont burn up starter. then let the cylinders air out a little bit. If your car has sat for a little bit the fuel inside cylinders will drain through your rings into oil pan. Pull dip stick so if increase in fluid level. Also smell dip stick to see if it smells like gas. If it has then you will be looking at an oil change. Gas is not a lubricant it will ruin bearings. As for the fuel pump I would check voltage to pump and fuel pressure. It may be on its way out.
Posted 07-10-2010 at 04:16 PM by TL-type-S TL-type-S is offline
Turn key to on position can you hear the pump prime sounds like a hummmmm.. for maybe 2-3 seconds. Check fuse for fuel pump. Check voltage to wires and good ground for fuel pump check it to manual specs. If all passes I would check fuel pressure. From these checks you should be able to diagnose problems from there, whether pump is bad or going bad, wiring issue ect.
Posted 07-11-2010 at 11:58 PM by TL-type-S TL-type-S is offline

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