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No rev

1K views 3 replies 4 participants last post by  QuadManiac 
#1 ·
Ok. So I just got this raptor 660 ,problem, it will start and idle with a little Hesitation at idle When I go to hit the throttle it immediately shuts off .sometimes I can feather the throttle and get it to rev a little bit. All Is rev Limiters were bypassed, Carbs are clean and new Any idea what could be Causing this will post video
 
#4 · (Edited)
Welcome to the forum!

You say "When I go to hit the throttle it immediately shuts off "... if so it is NOT petcock position, petcock filter or float bowl related - these would take many seconds to minutes to manifest.

Assuming the RPM limiters are PROPERLY bypassed (describe how they were bypassed) it's 99% likely your carbs are dirty or incorrectly jetted...

What are your airbox and exhaust mods and main and pilot jet numbers?

Give us history - when did this start? When did it last run properly? What happened in between? Etc., etc.
 
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