|
|
06-13-2011, 09:37 PM | #1 |
Major
118
Rep 1,451
Posts |
fuel starvation during hard cornering?
Guys,
I did an autocross event that had a couple of sections with some pretty sharp corners. As I was ending my first run I got a fuel pump failure light along with reduced power. I turned the car off and once I turned it back on the error was gone and the car drove fine. I did notice that I only had about a quarter tank of gas so I went ahead and filled up. I did two more runs and had no problems. Any ideas on what may have caused the error following my first run? Thank you. |
06-13-2011, 09:41 PM | #2 |
Lieutenant Colonel
102
Rep 1,787
Posts |
gas in tank goes to one side - levels out then comes back to life
Solution - FILL UP. You are not going to win a medal with less gas in the car |
Appreciate
0
|
06-13-2011, 09:44 PM | #3 |
Major
118
Rep 1,451
Posts |
|
Appreciate
0
|
06-13-2011, 09:56 PM | #5 |
Major
118
Rep 1,451
Posts |
|
Appreciate
0
|
06-13-2011, 10:03 PM | #6 |
Lieutenant Colonel
102
Rep 1,787
Posts |
|
Appreciate
0
|
06-14-2011, 12:38 AM | #7 |
Captain
107
Rep 697
Posts |
Interesting, I have run my car on track on fumes with r-comps (pulling over 1g) and have never had fuel starvation issues. I just figured that BMW finally figured it out and put multiple pickups in the tank. I'm curious to hear if anyone else has had this happen.
|
Appreciate
0
|
06-14-2011, 07:57 AM | #8 |
Major General
812
Rep 7,888
Posts |
I always try to run with as much fuel as possiable in the tank because when you are getting starvation you are not doing any good things to your fuel pump.When we raced Camaro's they started fuel starvation at 3/8th tank on RH corners so the last 15 minutes of your run was pretty frustrating.
|
Appreciate
0
|
06-14-2011, 09:31 AM | #9 |
Banned
476
Rep 1,711
Posts |
I had fuel starvation on the track once going into a sharp left corner with a quarter fuel tank. But it was E46 m3. Never had the same problem with 135i but after that incident i pit right away if i see a fuel gauge is close to quarter mark.
|
Appreciate
0
|
06-14-2011, 11:22 AM | #10 | |
Captain
30
Rep 915
Posts |
Martin D - good advice
Quote:
Best, vz
__________________
Previous Track Toy |
|
Appreciate
0
|
06-14-2011, 11:25 AM | #11 | |
Lieutenant Colonel
102
Rep 1,787
Posts |
Quote:
Lucky me CMP Fri/Sat/Sun then back home for VIR with Zone 2. You going to come out to that one? |
|
Appreciate
0
|
06-14-2011, 05:45 PM | #12 |
Captain
80
Rep 961
Posts |
Going back to the OP's question, the E92 M3 has a fairly complex fuel pickup system that keeps working until you're pretty much on fumes. It sounds to me like there was some other problem that caused the error condition.
The fuel pump is at the bottom of a tubular inner reservoir inside one side of the saddle tank. It pressurizes the engine plumbing and the overflow from the piping goes through a venturi that siphons fuel from the other side of the saddle into the reservoir. If there's too much, the reservoir overflows and the cycle repeats. Both sides of the saddle have to be really low for the pump to run dry. |
Appreciate
0
|
06-14-2011, 11:21 PM | #13 | |
Major
118
Rep 1,451
Posts |
Quote:
I have not seen the issue again but do you think I should still take the car into the dealer? |
|
Appreciate
0
|
06-14-2011, 11:37 PM | #14 | |
Captain
80
Rep 961
Posts |
Quote:
|
|
Appreciate
0
|
06-15-2011, 10:49 AM | #15 | |
Captain
28
Rep 666
Posts |
Quote:
I have been on literally like 3 miles to empty at an Auto-x and had no issues at all, other than thinking I was going to run out of fuel my last run. |
|
Appreciate
0
|
06-15-2011, 01:05 PM | #16 |
Lieutenant Colonel
392
Rep 1,519
Posts |
Interesting thread. Our cars eat gas like crazy at the track. I've learned in the short time I've been doing this to bring a 5-gal gas can to the track, because each 20-25 minute session seems to burn a quarter of a tank. Even with the extra gas can, I've had to cut a final session short when I've been on fumes for fear I'd sputter out on track.
|
Appreciate
0
|
06-15-2011, 01:10 PM | #17 | |
Captain
28
Rep 666
Posts |
Quote:
|
|
Appreciate
0
|
Post Reply |
Bookmarks |
Thread Tools | Search this Thread |
|
|