Agfracing Posted May 25, 2018 Report Share Posted May 25, 2018 Last year at Pittsburg half way through Saturday my buddies e30 started shutting off every few laps and not restarting untill it cooled off. Trouble shot the issue and thought we fixed some electrical issues Saturday night. Sunday the car went three laps, shut down and never restarted that day. Over winter they put in a new harness and a haltech ecu. Went to a fuel cell as well. Had the car tuned and thought it was ready to go. Today in practice the car only Makes it 3 laps before dying. After a few seconds the car will restart and run fine back to the pits. Anyone have any ideas?? Quote Link to comment Share on other sites More sharing options...
Team Infiniti Posted May 25, 2018 Report Share Posted May 25, 2018 6 minutes ago, Agfracing said: ideas Crank sensor? Fuel pump? Quote Link to comment Share on other sites More sharing options...
Agfracing Posted May 25, 2018 Author Report Share Posted May 25, 2018 2 minutes ago, Team Infiniti said: Crank sensor? Fuel pump? Brand new fuel pump in the cell. I believe they’ve tried a second crank sensor but i have to double check. Im on my way out to the glen now waiting on a response about the crank sensor. Quote Link to comment Share on other sites More sharing options...
JDChristianson Posted May 25, 2018 Report Share Posted May 25, 2018 Fuel filter? Is there a sock type filter in the tank that could collapse? Quote Link to comment Share on other sites More sharing options...
JDChristianson Posted May 25, 2018 Report Share Posted May 25, 2018 (edited) Gap on crank sensor? Just spitballing ideas. Edited May 25, 2018 by JDChristianson Quote Link to comment Share on other sites More sharing options...
Team Infiniti Posted May 25, 2018 Report Share Posted May 25, 2018 Ignition module? Does it drop spark? injector pulse? both? fuel? all? Quote Link to comment Share on other sites More sharing options...
Agfracing Posted May 25, 2018 Author Report Share Posted May 25, 2018 Ok so he just sent me a message. They think it may be the fuel regulator. This is what he said. And it is the fuel pressure regulator we where able to log it and it runs out of duty cycle. Which you increase by increasing the fuel pressure Quote Link to comment Share on other sites More sharing options...
Agfracing Posted May 25, 2018 Author Report Share Posted May 25, 2018 So... can’t locate a fuel pressure regulator that’s in stock anywhere near the track.. Quote Link to comment Share on other sites More sharing options...
Administrators E. Tyler Pedersen Posted May 25, 2018 Administrators Report Share Posted May 25, 2018 Are you running stock injectors? What's your fuel pressure? Quote Link to comment Share on other sites More sharing options...
Agfracing Posted May 25, 2018 Author Report Share Posted May 25, 2018 4 minutes ago, Crank Yankers Racing said: Are you running stock injectors? What's your fuel pressure? Aftermarket 19 pound injectors. Pressure is around 35 psi in the pits. No gauge in the car to determine what it’s doing on track though. Quote Link to comment Share on other sites More sharing options...
Administrators E. Tyler Pedersen Posted May 25, 2018 Administrators Report Share Posted May 25, 2018 18 minutes ago, Agfracing said: Aftermarket 19 pound injectors. Pressure is around 35 psi in the pits. No gauge in the car to determine what it’s doing on track though. Afr gauge? Quote Link to comment Share on other sites More sharing options...
Technical Advisory Committee NigelStu Posted May 25, 2018 Technical Advisory Committee Report Share Posted May 25, 2018 Sounds like it can't get fuel when under load. Are fuel lines hooked up to correct side of regulator? new parts fail sometimes, stuff gets into tanks. Check the pump, pump filter and line filter. Quote Link to comment Share on other sites More sharing options...
enginerd Posted May 25, 2018 Report Share Posted May 25, 2018 (edited) 2 hours ago, Agfracing said: Last year at Pittsburg half way through Saturday my buddies e30 started shutting off every few laps and not restarting untill it cooled off. Trouble shot the issue and thought we fixed some electrical issues Saturday night. Sunday the car went three laps, shut down and never restarted that day. Over winter they put in a new harness and a haltech ecu. Went to a fuel cell as well. Had the car tuned and thought it was ready to go. Today in practice the car only Makes it 3 laps before dying. After a few seconds the car will restart and run fine back to the pits. Anyone have any ideas?? We had very similar symptoms with the e30 4 years ago. The problem was a loose / bad fuel pump ground wire. Replaced that wire and pop-riveted a new ground for it and the problem has never returned. Edited May 25, 2018 by enginerd Quote Link to comment Share on other sites More sharing options...
Racer7x Posted May 26, 2018 Report Share Posted May 26, 2018 afm has gone bad... Quote Link to comment Share on other sites More sharing options...
frankrehnelt Posted May 26, 2018 Report Share Posted May 26, 2018 Kill switch? Quote Link to comment Share on other sites More sharing options...
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