Before I ask my questions let me give some info.......2 months ago I went to the track, the day before I was doing some basic tuning. the car kept leaning out and having knock no matter how much I increased fuel on the TT chip or regulator. I am running a Red's 340 double in tank kit (these pumps are about 10 years old and have been in 2 different cars), I figured my pump was starting to lay down.....I wired my second pump in and set the pressure switch at 10psi boom problem fixed no lean condition and no knock.
The next day at the track the car clicked off an 11.54 @116 on 19-20 psi after that it came back home and sat for a few weeks. I went to drive it and on a WOT pull I got a loud pop and the car nosed over, i noticed smoke from under the hood....turns out I broke the fuel return line. While fixing the fuel return line I also noticed a very small leak in the feed line....I ripped out the stock feed line and replaced it with -6 steel braided line and an inline filter.
now that the fuel lines are repaired I am now getting a weird popping and the car noses over real bad at 15 psi or above. I think it may be a lean pop condition best way to describe it is that it sounds like a Jake brake on a big rig but not quite as loud, my MV's are any where from low 600 to low 800 when this happens. I also notice that around 15 psi my fuel pressure is right at 60psi and as it makes the popping sound and noses over the fuel gauge is shaky. It did not seem to go past 60psi.
All grounds are good, I am also running a hot wire kit and voltage booster, volts at the pump car running is 14.2-14.5 with the booster 15.3-15.5
Now my questions:
Previous to this popping and nosing over I did feel like my primary pump was failing, if it is does it make sense that the secondary pump can not keep up?
The car runs great and pulls hard all the way up to 14-15psi once over that amount the issue occurs, has anyone else had a fuel pump fail like this?
how can I accurately test the pump pressure and check out put on both pumps?
If the pump's are failing does it make sense that some time's my mv's are low 800, shouldn't it be way lean?
The next day at the track the car clicked off an 11.54 @116 on 19-20 psi after that it came back home and sat for a few weeks. I went to drive it and on a WOT pull I got a loud pop and the car nosed over, i noticed smoke from under the hood....turns out I broke the fuel return line. While fixing the fuel return line I also noticed a very small leak in the feed line....I ripped out the stock feed line and replaced it with -6 steel braided line and an inline filter.
now that the fuel lines are repaired I am now getting a weird popping and the car noses over real bad at 15 psi or above. I think it may be a lean pop condition best way to describe it is that it sounds like a Jake brake on a big rig but not quite as loud, my MV's are any where from low 600 to low 800 when this happens. I also notice that around 15 psi my fuel pressure is right at 60psi and as it makes the popping sound and noses over the fuel gauge is shaky. It did not seem to go past 60psi.
All grounds are good, I am also running a hot wire kit and voltage booster, volts at the pump car running is 14.2-14.5 with the booster 15.3-15.5
Now my questions:
Previous to this popping and nosing over I did feel like my primary pump was failing, if it is does it make sense that the secondary pump can not keep up?
The car runs great and pulls hard all the way up to 14-15psi once over that amount the issue occurs, has anyone else had a fuel pump fail like this?
how can I accurately test the pump pressure and check out put on both pumps?
If the pump's are failing does it make sense that some time's my mv's are low 800, shouldn't it be way lean?
