Tim Tucker
Jedi Trainee
Offline
All,
My TR4 starts popping out the exhaust and missing (no visible smoke) when I try to sustain RPMs >4k for ‘long’ periods. I am defining long as being a sustained drive >4k RPM in 4th gear or a lengthy acceleration period >4k RPM in 3rd. The quicker accelerations through 1st and 2nd go perfect. The car is free from any stumbles or other drivability issues. The plugs look good for both mixture and time (per the timing article). I am running a pertronix ignition, Lucas Sports Coil, the uprated rotor and cap as sold by the roadster factory, champion plugs, and a set of wires from TRF. I installed a new WIX filter last weekend.
I suspect (in order): misadjusted bowl floats and low fuel pump delivery. I checked the flow from the tank to the pump: seemed to be MORE than adequate. I pressured checked the pump pressure: ~2-3 psi (my gauge is a bit iffy at that low of a pressure.)
I would appreciate any feedback or ideas.
Thanks
Tim
My TR4 starts popping out the exhaust and missing (no visible smoke) when I try to sustain RPMs >4k for ‘long’ periods. I am defining long as being a sustained drive >4k RPM in 4th gear or a lengthy acceleration period >4k RPM in 3rd. The quicker accelerations through 1st and 2nd go perfect. The car is free from any stumbles or other drivability issues. The plugs look good for both mixture and time (per the timing article). I am running a pertronix ignition, Lucas Sports Coil, the uprated rotor and cap as sold by the roadster factory, champion plugs, and a set of wires from TRF. I installed a new WIX filter last weekend.
I suspect (in order): misadjusted bowl floats and low fuel pump delivery. I checked the flow from the tank to the pump: seemed to be MORE than adequate. I pressured checked the pump pressure: ~2-3 psi (my gauge is a bit iffy at that low of a pressure.)
I would appreciate any feedback or ideas.
Thanks
Tim