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Fuel starvation, who else?

There is no way the pickup is at the top of the tank. You'd 'run out' of fuel every time you used a few gallons. Much more likely is the

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Old 05-08-2011, 04:06 PM   #1 (permalink)
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There is no way the pickup is at the top of the tank. You'd 'run out' of fuel every time you used a few gallons.

Much more likely is the pickup is at the bottom, but either the tank design or the pump internals have a problem with lateral g's. Tank design would suggest all the fuel sloshes away from the pump and the pickup can grab air. Pump design would be more difficult to assign blame (aside from pickup location), but raises my suspicion as the reason when fuel starvation occurs with a full tank. I don't know how a full tank can slosh enough for the bottom of the pump to be exposed to air.
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Old 05-08-2011, 11:06 PM   #2 (permalink)
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Originally Posted by spearfish25 View Post
There is no way the pickup is at the top of the tank. You'd 'run out' of fuel every time you used a few gallons.

Much more likely is the pickup is at the bottom, but either the tank design or the pump internals have a problem with lateral g's. Tank design would suggest all the fuel sloshes away from the pump and the pickup can grab air. Pump design would be more difficult to assign blame (aside from pickup location), but raises my suspicion as the reason when fuel starvation occurs with a full tank. I don't know how a full tank can slosh enough for the bottom of the pump to be exposed to air.
I was chatting with my buddy about this. How about wire a regular fuel pump on the fuel sending unit side and just dump the outlet back on the passenger side for the fuel pump. It would just be a constant recirculating fuel pump and cost virtually nothing
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Old 05-11-2011, 08:01 PM   #3 (permalink)
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Wish I would have seen this thread before tonight. Just had my 09 towed after buying it 3 weeks ago. Took and right turn onramp agressively, then accelerated hard to merge into traffic on an uphill straight with about 1/4 tank of gas. Apparently the " perfect storm ," the car completely died and as I was parked on an incline the car wouldn't start no matter how many times I tried. Oh well its at the dealership now I guess I'll let them check it out anyway just in case. Sucky!!
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Old 05-11-2011, 09:27 PM   #4 (permalink)
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I was chatting with my buddy about this. How about wire a regular fuel pump on the fuel sending unit side and just dump the outlet back on the passenger side for the fuel pump. It would just be a constant recirculating fuel pump and cost virtually nothing
It could work, but modding in the fuel tank with new pumps and wiring makes me nervous. You'd also need a float switch for the auxillary pump so it doesnt burn out running dry.
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Old 05-22-2011, 07:34 PM   #5 (permalink)
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Ha, glad I saw this thread... I had the same issue for the first time today doing a time trial event. I have not experienced this yet owning the car for over 2 1/2 years now, but it happened to be on a right hand sweeper, with oil temps around 255 and mid-rpm 3rd gear. Same fuel cut each time on the same corner... definitely a bummer though, I had well over a half tank too. I initially thought the car was going into limp mode, but after a few seconds of nothing, I could accelerate again. Odd that Nissan never caught this in testing?
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Old 06-07-2011, 09:55 PM   #6 (permalink)
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Originally Posted by spearfish25 View Post
It could work, but modding in the fuel tank with new pumps and wiring makes me nervous. You'd also need a float switch for the auxillary pump so it doesnt burn out running dry.
Basically anything is difficult because the gas tank is a sealed unit with two peepholes. Short of replacing the gas tank or modifing the pickup point (which I dont think you can), you are better off carrying a 5 gallon jug...
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