Visit The Dirt Forum for More Information

Author Topic:   No gas in the corners
Jimhobby02
Dirt Forum Racer

Total posts: 92
posted August 29, 2005 02:26 PM  
Went racing last night and had the following problem. Car starts and idles well, and goes around the track during lineup and packing. When the green flag drops it runs great going down the straits and into the turn. Around the middle of the turn, it acts like it has no gas and dies coming out.

[This message has been edited by Jimhobby02 (edited August 29, 2005).]

sideways
Dirt Forum Champ
Total posts: 715
posted August 29, 2005 02:53 PM  
Maybe fuel cell pick up.

The Flash32
Dirt Maniac

Total posts: 120
posted August 29, 2005 03:21 PM  
Do you have the push-on type hose & fittings? If so put clamps on all of them. Had that problem last year with them sucking air!

sc1 racing
Dirt Freak

Total posts: 419
posted August 29, 2005 03:36 PM  
could be fuel pick up tube, float not set, and fuel filter clogged up..exspecially if you still run the stock filter in the carb..

Jimhobby02
Dirt Forum Racer

Total posts: 92
posted August 29, 2005 04:20 PM  
Our fuel cell is pretty old. They had used some plastic fittings to rig it but they broke. We replaced everything with brass, and used a rubber hose for the pick-up. I would also like to add that the fuel seems to want to drain back out of the filter. Thanks for the info, we will give it a try.

DangerZoneRacing
Dirt Maniac

Total posts: 176
posted August 29, 2005 05:07 PM  
I had the same thing happen with mine, and did the same fix. The rubber fuel line would float to the top and run out of fuel. We just poked a heavy wire through the end of the fuel line and put a heavy piece of metal on the end to weight it down. Worked for 3 years till I bought a new cell. I think the guy I sold it to 2 years ago is still running it the same way. Good luck.

STREET16
Dirt Maniac

Total posts: 158
posted August 29, 2005 07:42 PM  
Draining back out of the filter? This shouldn't happen with a diaphram fuel pump. I would recommend replacing the fuel pump. It may have some trash in it. If it were a hole in the diaphram, you would get fuel in the oil. Have you checked for fuel in the oil?

Jimhobby02
Dirt Forum Racer

Total posts: 92
posted August 29, 2005 08:00 PM  
We have not checked for fuel in the oil, last night was the first night of racing with the cell rigged this way. Danger Zone, we were wondering about the pick-up floating, so we will try that. Thanks for the help!

[This message has been edited by Jimhobby02 (edited August 29, 2005).]

DangerZoneRacing
Dirt Maniac

Total posts: 176
posted August 29, 2005 09:30 PM  
I had to add heavier weight 3 different times before I got one heavy enough to stop it from floating. So make sure it is heavy enough for you or make sure you bring some extra weights of some kind with just incase it isnt enough. I wouldnt rule out what street16 said either, bring a extra fuel pump with just in case. Make sure you run plenty of hot laps so you can rule out the problem. If you add weight to the fuel line at home and you get to the track and run hot laps and it still does it then it is either the fuel pump or you need more weight on the line. If it still does it on the first run of hot laps I would change the pump first, then if it still does it add more weight to the line (and you'll know then if you'll still have a good back up fuel pump lol). Hope this helps.

k2dirtnut
Dirt Full Roller

Total posts: 33
posted September 03, 2005 08:27 AM  
I ran a carter afb carb and it wouldn't pick up the fuel in the corners because of the float setup.

Jimhobby02
Dirt Forum Racer

Total posts: 92
posted September 04, 2005 08:15 PM  
That is another thing that we have been told to check. So far we replaced the pick up for the fuel cell with a 3/8 pipe that comes within 1/4" of the bottom of the cell. We also replaced the fuel pump, because it was used. The filter seems to hold fuel now without letting it drain back. We are racing tomorrow night so hopefully this works. If not we will check the carb. Thanks for all the help.

CLBaker25
Dirt Maniac

Total posts: 193
posted September 09, 2005 11:16 AM  
Are you running a fuel log? If you are make sure that the side that says "nozzle" is toward the carb and the other side (I can't remember what it says) is towards the fuel tank. We had this same problem this year and figured out that our fuel log filter was in backwards. We found out that the fuel logs are made for gas pumps so that should help with the terminology on the filter.

Jimhobby02
Dirt Forum Racer

Total posts: 92
posted September 09, 2005 11:34 AM  
No, we don't run a fuel log. We won't be racing til September 16, so we are going to check the float in the carb. We are running a Rochester 500 cfm 2g. It was bought as a circle track carb and has size 71 jets. We run a .30 over 350 Chevy, JR Motorsports cast iron heads with .600 lift springs. We run a Midwest Motorsports #5 solid cam and lifters. With this info can you tell me what the float needs to be set at and how to do it? Thanks to everyone on this board for being helpful without the abuse that you see on other boards.

Jimhobby02
Dirt Forum Racer

Total posts: 92
posted September 17, 2005 12:22 AM  
I just thought I would let everyone know, VAPOR LOCK was the culprit. We had swapped engines, from a 350 olds to a 350 Chevy and the exhaust was pointed right at the fuel line. We were packing the track when the car started to act up again. We found the problem in the pits before the heat race.

Back to the Archives