Manitou MSI-30DT:
getting air in fuel have to pump primer ball to get started each time

I have replaced the fuel filter, with new gaskets, and bleed out the system. when the engine is running the primer ball is sucked in. is it possible this was install backwards at one time.is there a check valve in the system? sometimes the engine will start but stalls out after a few seconds. I would think it is *** air in somewhere, I have checked out the filter a few times and have no leaks ??
  • Posted 7 Sep 2013 03:29
  • Discussion started by shorn
  • Massachusetts, United States
Showing items 1 - 6 of 6 results.
Just a heads up. I found the primer bulb was the problem the check valve inside must have been broken. When I removed it and pluged the suction side and pumped it. the bulb sounded like it was *** air. I replace it and the truck starts and run great now. Just wanted to say thanks for everyones great input.
  • Posted 3 Oct 2013 04:22
  • Reply by shorn
  • Massachusetts, United States
I removed the suction and return lines from the tank and put them into a gallon jug. The primer bulb still collaped but I saw air bubbles coming from the return line. I must be *** air from somewhere. Should the bulb *** in during normal running?
  • Posted 19 Sep 2013 04:09
  • Reply by shorn
  • Massachusetts, United States
When looking for possible causes, don't rule out mischief.
I don't know what your situation is, but I have seen instances where paper and other trash have been put into fuel tanks.
This stuff can/will plug up the suction pipe if it can get to it.
  • Posted 7 Sep 2013 06:07
  • Reply by L1ftmech
  • Tennessee, United States
Thanks gentlmen....I will check for a restriction from the tank to the bulb..and will respone with the results.
  • Posted 7 Sep 2013 05:18
  • Reply by shorn
  • Massachusetts, United States
Yes as posted earlier it sounds like you have a plugged/restricted fuel line from the tank to the bulb....
  • Posted 7 Sep 2013 05:07
  • Reply by kevin_t
  • Pennsylvania, United States
fuel suction pipe closed
  • Posted 7 Sep 2013 04:36
  • Reply by AAPEE
  • Brussels, Belgium

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