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1100 Joyner Trooper Speed over 30 MPH

DONALD1968

By DONALD1968
in Joyner UTV SxS Forum

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  • Alex changed the title to 1100 Joyner Trooper Speed over 30 MPH
Dan B Community Regular

Dan B

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I'm still guessing here.  Since the crankshaft position sensor didn't change anything, that could be the issue.  A bad sensor though would cause rough idle, slow engine resonse when you press on the accelerator, difficulty starting.    Engine starving from lack of fuel caused by a clogged fuel filter; low fuel pressure (should be about 50 psi) or bad throttle body.  A compression test might be of value.  Low compresson on all cylinders could indicate a jumped valve timing belt.  Not likely but it will eliminate one doubt.  3000 RPMs at 30 mph is normal; higher RPMs is not.

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Dan B Community Regular

Dan B

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I'm leaning toward lack of fuel.  The engine is needing more fuel that what is being delivered.  Could be fuel pump, filter or the ECM isn't recognizing the demand for fuel from the throttle body.  Other than that, I'm sorry that my skill level is short of what I've suggested.  Good luck on fixing your machine.

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Dave Ramm Rookie

Dave Ramm

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Donald 1968: Did you finally get your issue fixed on your trooper? If so what was the final fix?

California Nut Case: Did you ever find anyone to work on your Joyner, and if not what part of Cali are you in? I am a retired auto mechanic and live 30 minutes from Carson City Nv.  I bought my trooper because it is an automotive powertrain and I know I can fix it, modifying to use more common parts (ie Honda) when I need to. If you are fairly close I may be able to help.

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