Originally Posted by
beidle99
Have you used the same pipe on all those motors? Check your gaskets and give your pipe the hot anti freeze bath to clean the inside. 3-4 minutes makes it seem like their is something heat related. Maybe an o-ring that is torn in the carb, or varnish in the pipe that it getting hot turning to liquid and running into the pressure nipple and blocking the pressure line. Try a different pipe and see if it still does it. Also is the motor sealed up? Zip tie on the carb boot?
Originally Posted by
bigjayjay1
I had a similar problem it was a pain turns out it was my clunker in my fuel tank at a certain level / certain jump she would run dry 'hung up 'and my motor would die - the five min mark.
Tried 3 pipes = OFNA 086, Nova 9886, Brand new never run OS 2090. Pipes are fine as I clean them and like I said I can throw any of the 3 OS .19, OS .21, CRE P5 and it is fine. I actually have 2 MBX6r's. 1 for practice, 1 for races and it does it in both and the other 3 engines will run for 2 hours straight. Tanks, lines are new.
And I actually completely tore down and cleaned the engine to put in front bearing before this weekend. Completely cleaned with no oily residue, assembled using Nova 1n2 oil.......
I have had engine modders, dealers in the south take a look at it and tune it at the track and some thing....
We have to be missing something simple right in front of my eyes..... I WILL find it. These engines are just pretty simple in the grand scheme of things hard to believe I am missing it, but I am.