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Discussion Starter · #1 ·
Just got an 05 z400 and at first when i got it the guy said it was running rough and leaking fuel into the oil I took the bowl off cleaned all the jets and it’s running more smooth now but won’t idle for the life of it and when I shut it down it’s dumping fuel out of the side of the carb (the seller confirmed it has a big bore and hmf slip on he’s gonna look into his paperwork to figure out what size and the carb has been jetted) but I don’t know what to do
 

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Fuel should leak out the overflow tube in the bottom of the bowl, not the side. It is usually a bad/dirty float needle and seat, or the O-ring under the seat. if it is leaking where the bowl joins, clean or replace the bowl gasket.
 

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Discussion Starter · #3 ·
Fuel should leak out the overflow tube in the bottom of the bowl, not the side. It is usually a bad/dirty float needle and seat, or the O-ring under the seat. if it is leaking where the bowl joins, clean or replace the bowl gasket.
Fuel should leak out the overflow tube in the bottom of the bowl, not the side. It is usually a bad/dirty float needle and seat, or the O-ring under the seat. if it is leaking where the bowl joins, clean or replace the bowl gasket.
It has a big bore and was jetted so would the float needle or seat be any different than stock?
 

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It has a big bore and was jetted so would the float needle or seat be any different than stock?
NO. With it having a big bore will not affect the needle and seat, just jetting. I would look into what AMCF18 mentions about making sure the needle is clean and the o-ring is good.
 

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Check that o-ring!
As for idling, the pilot jet could be clogged.
Hi Guys!
edit to say why is this in the loft.........shoulld be in maintenance section. Who's moderating this place?:rolleyes::LOL:
 

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Check that o-ring!
As for idling, the pilot jet could be clogged.
Hi Guys!
edit to say why is this in the loft.........shoulld be in maintenance section. Who's moderating this place?:rolleyes::LOL:
Apparently, you are..:unsure: 😁😁 Fixed it for ya.
 
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