P5xlt?
 

Was wondering if I could get some advice? I have a p5xlt with about a gallon and a half now. It's running like a champ and seems to be tuned good. Only problem is, it will be running for a bit and get to temp and when I let off the gas it just dies. When I go to start it again it takes a minute to get it running. The temps are between 225-250 max. I'm running it in a mbx7 with the nova c6tgc. Like I said it runs awesome not understanding the sudden shut off? Any help is greatly appreciated! Thanks

I wouldn't tune by temp this can cause all kinds of tuning issues. You should temp after a long race or qualifying as a bench mark. Novas take 1.5-2 gallons to completely break-in and you might be pushing too hard causing a HIGH temp. High temp will cause issues on a restart also make sure your pipe exhaust seals are sealing.. Pull your plug but careful debri doesn't drop into the button. Check for color and wire distortion. You want a tan tint, wet plug surface and your wire should not be white or distorted.

Whats your needle setting on the Low and High.

Thanks for the reply! I'm not tuning to temp that's just what the average is! Plug looks pretty good. It's runs great, I'm just stumbled on the cut off after a lil bit of running. I've changed clutches, springs and shoes. Replaced plugs too.

Lsn flush
Hsn is about flush also!

You can lean the bottom in small increments. Also check your idle gap and linkages. Make sure your carb is being pulled back to close with any hangups. I always add a rubber band around the high speed needle onto the carb leg that attaches onto the linkage.

Sounds like your idle may be a bit low so once everything is heated up the idle drops a little lower then when its cold and it stalls. Try leaning your LSN a little at a time until idle stays high for about 15 seconds then turn it back down with your idle stop screw.

Thanks guys! i went to the track and tested yesterday and it ran good. i think i might have found my problem on the refueling stall. i noticed in my pressure line little bubbles. i did the submerge deal with the tank and the lid was blowing bubbles for days! no just need to figure how to seal the lid better..

I would just buy a new tank.

Mugen is sending me 3 new lids! I gave them a call and they were quick to help me out and said they would send me a few new lids.

Called mugen on Tuesday afternoon and received my fuel tank lids today! They have great customer service!