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Randomly dying at speed

  • Thread starter Thread starter hockey911
  • Start date Start date
H

hockey911

Guest
Hi all, everynow and then when im out on a cruise at 55mph or so in 6th gear my engine randomly starts loosing power until it dies.... And if i coast it down to speed and dump the clutch in 3rd gear she starts back up no problem and acts as if nothing happened....


Compression 150psi (cold) both cylinders
Shims done 1000miles ago
Spark plugs 1000 miles
Carb cleaned 1500 miles ago

My fuel system has a gravity fed inline cartrige filter
Other than that 100% stock

Plugs are reading perfect colors just a hair orange on the tips
 
Why do you have an inline fuel filter when the one on the petcock does just fine? I'd get rid of it first as it might be restricting your fuel flow too much
 
cowboyup3371 said:
Why do you have an inline fuel filter when the one on the petcock does just fine? I'd get rid of it first as it might be restricting your fuel flow too much
Click to expand...


It was doing it before the inline fuel filter, And as a reply i may have figured out part of the problem... the fuel selector switch was in prime, i don't know if that mode delivers enough fuel for the bike to run or not
 
Prime means the fuel is always flowing as the On and Reserve "modes" will only pull fuel when a vacuum is applied (bike's running). Leaving it on Prime could cause fuel to flow past the floats and into the engine ultimately making it into your oil.
 
Definitely sounds like a fuel issue, I'd check the Petcock and vent hoses. You've got a fuel starvation issue probably
 
The gas tank vents through the keyhole. They do clog up sometimes, and it will make it run pretty much as you describe. To test the venting, pop the gas cap and ride with it cracked open, see if that fixes it.
 
orange on the spark plug? is there any or how much rust is in your tank - his vent idea/ diag. test is a good one - just to be clear total fuel flow from the tank to your carb float bowls should be faster than main jet consumption. (highway riding) kinks in hose will do this too

maybe snap a photo of your spark plug for us. I have seen orange but the tank was horrible.
 
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