2001 optimax 135 runs fast at idle

G

gwbufallo

Recruit
Joined
Jul 11, 2011
Messages
2
just replaced the high pressure fuel pump and engine starts right up but when i put it in gear and advance the throttle then bring it back into idle the engine rpms wont drop down and stays at very high rpms.
has anyone else experienced this and what could it be?
Thanks
 
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