Changed fuel pump and i'm only getting 40lbs pressure.
#1
Staging Lane
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Changed fuel pump and i'm only getting 40lbs pressure.
I swapped an ls1 into my 91 camaro and put the ls1 plastic tank in. I oriinally put a pump that came with the tank in there and i was getting 20 lbs pressure and then it would immedietly drop to 0. I was worried it might have had something to do with the cup/hoses/regulaters so i bought a new unit off of ebay. Sure enough when i took the old one out the small tube that fills the cub was broke and i think that was my issue.
Now after i got everything back together with the pump i got off ebay i'm only getting 40 lbs of pressure at the fuel rail. The pressure is holding this time. But the car will not start. When i start it it fires real fast and then dies within a second. Do these cars need more than 40 lbs just to start?? I figured it would start but then maybe starve itself of fuel when the rpms go up.
I was thinking now that I changed the sending unit i could upgrade to a better in tank pump. But i'm worried that it might be the regulator and changing the pump would have no affect.
Any suggestions and help is apreciated.
Now after i got everything back together with the pump i got off ebay i'm only getting 40 lbs of pressure at the fuel rail. The pressure is holding this time. But the car will not start. When i start it it fires real fast and then dies within a second. Do these cars need more than 40 lbs just to start?? I figured it would start but then maybe starve itself of fuel when the rpms go up.
I was thinking now that I changed the sending unit i could upgrade to a better in tank pump. But i'm worried that it might be the regulator and changing the pump would have no affect.
Any suggestions and help is apreciated.
#2
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There could be a few issues....
First, you often get what you pay for with generic pumps.
Second, your pump install may be causing a fuel delivery problem.
Did you try jumpering your pump so it runs continuously & see what the pressure is & if the car runs then?
What regulator did you use & how is it hooked up?
First, you often get what you pay for with generic pumps.
Second, your pump install may be causing a fuel delivery problem.
Did you try jumpering your pump so it runs continuously & see what the pressure is & if the car runs then?
What regulator did you use & how is it hooked up?
#3
Staging Lane
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I know i took a chance with this pump, but i knew i needed the whole assembly and not just the pump.
I did not try jumping the pump. I'll have to do that. Problem is though the car is 2 hours away and i probably won't be working on it for a few weeks again.
I'm using the regulator that came with the assembly that i bought off of ebay. My fuel system is set up like an 99-02 camaro with the regulator at the tank.
I did not try jumping the pump. I'll have to do that. Problem is though the car is 2 hours away and i probably won't be working on it for a few weeks again.
I'm using the regulator that came with the assembly that i bought off of ebay. My fuel system is set up like an 99-02 camaro with the regulator at the tank.
#5
Staging Lane
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Can anyone recommend a good replacement sending unit. As much as i'd like to upgrade the pump i need to have a complete working sending unit first. I'm trying not to spend $600+ on the oem one.