Can't get gas to empty
#1
Rennlist Member
Thread Starter
Can't get gas to empty
The last couple of track outings I have had fuel starvation stumbling when my fuel gauge gets to ¼ or so. The symptoms are that in high speed turns the engine will not rev to more than about 6,000 rpm, but not with the stuttering when actually hitting the rev limiter. The engine will not die, but it won't accelerate. If I stop, add fuel and go right back out on the track the symptoms go away.
Any ideas?
Any ideas?
#6
I thought the same thing too, but seems like it's worth replacing. Any debris in the tank will be more concentrated at low fuel levels, then throw in the cornering g-forces and...
Victor may be right about it being in "safe" mode, but I'd think you'd get some type of warning for that.
Don't know, just guessing.
Victor may be right about it being in "safe" mode, but I'd think you'd get some type of warning for that.
Don't know, just guessing.
#7
Could it simply be centrifugal force pulling the fuel to one side of the tank and away from the fuel pump pick up? I have never driven below a quarter tank on the track for fear of fuel starvation and having the engine run lean.
What direction are you turning, i.e. does this only happen turning left or only turning right or both?
It might also be interesting to see how much fuel it will accept when you refill. Is the volume more like 3/4 of the tank's volume or all of the tank's volume?
Assuming you drive on the street, what happens when you go below 1/4 tank? What if you then take a freeway ramp at some speed?
Just some thoughts.
What direction are you turning, i.e. does this only happen turning left or only turning right or both?
It might also be interesting to see how much fuel it will accept when you refill. Is the volume more like 3/4 of the tank's volume or all of the tank's volume?
Assuming you drive on the street, what happens when you go below 1/4 tank? What if you then take a freeway ramp at some speed?
Just some thoughts.
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#8
Rennlist Member
Thread Starter
Good thought, Jim. Last year I ran the car to absolute empty (had to be towed in) on the same track and there was no stumble before it ran dry. After refuleing it was fine then, too.
It seem sto happen on turns of either direction, but more evident on right turns because of the track. I could be wrong about this, though.
Good thought on measuring how much fuel can be added--that would tell whether it's a pickup problem or a fuel gauge malfunction.
No issues on the street, but I cannot get the same Gs either.
It seem sto happen on turns of either direction, but more evident on right turns because of the track. I could be wrong about this, though.
Good thought on measuring how much fuel can be added--that would tell whether it's a pickup problem or a fuel gauge malfunction.
No issues on the street, but I cannot get the same Gs either.