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Help please cat guys

POLZIN

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Premium Member
Nov 26, 2007
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Farmington NM
I have a borrowed KK 900 EFI my daughter was riding and it started bogging and now will not start seems to have good spark. What are some of the common things to look for? I know very little about cats so any help would be greatly appreciated
 

POLZIN

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Premium Member
Nov 26, 2007
4,092
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Farmington NM
I pulled the fuel line from the rail and it does pump fuel when cranked. I poured fuel into cylinders and it fired immediately and ran for a few seconds. So it is a fuel problem. Reconnected the line and it will not start.

How much fuel pressure should there be ?
 

POLZIN

Well-known member
Premium Member
Nov 26, 2007
4,092
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Farmington NM
Seems like the pump is most likely unless both injectors clogged simultainiously I'd think it would still fire on one cylinder . Dam fuel pumps are pricey as heck!

I should know better than to borrow stuff this always happens
 
D

diggerdown

Well-known member
Apr 25, 2004
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Deer Park Wi.
Use battery and run the fuel pump both ways, then check the fuel pressure. The screens could be almost pugged and just need to be blown out. Make sure the pump is an issue before replacing it, yes they are expensive. You can go with a after-market pump but then you need a pressure regulator to get it around that 40 psi mark. I have seen some used pumps on here and E-bay.
 
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