- Posts: 89
- Thank you received: 0
Rebuilt carburetors still leak out overflow tubes
- barquirt
- Topic Author
- Offline
- User
Less
More
11 Jul 2010 08:50 #381661
by barquirt
Rebuilt carburetors still leak out overflow tubes was created by barquirt
Good morning all.
I rebuilt a set of carburetors for a 1979 KZ650 SR yesterday with kits. All the gaskets, O-rings, floats, etc. are new. I had the carb bodies cleaned in a service shop parts washer so the bowls, etc. are spotless.
It is the carburetor set with an accelerator pump on the #2 carburetor.
I put everything together per the bike manual, put them on the bike and when i opened the fuel tap they immediately started to leak from the overflow tubes on the carburetor float bowl bottoms. Float height issue? Ideas? The fuel POURS out freely.
I rebuilt a set of carburetors for a 1979 KZ650 SR yesterday with kits. All the gaskets, O-rings, floats, etc. are new. I had the carb bodies cleaned in a service shop parts washer so the bowls, etc. are spotless.
It is the carburetor set with an accelerator pump on the #2 carburetor.
I put everything together per the bike manual, put them on the bike and when i opened the fuel tap they immediately started to leak from the overflow tubes on the carburetor float bowl bottoms. Float height issue? Ideas? The fuel POURS out freely.
Please Log in or Create an account to join the conversation.
- mark1122
- Offline
- User
- Keep twisting it
Less
More
- Posts: 5359
- Thank you received: 109
11 Jul 2010 09:33 #381662
by mark1122
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
~ ~ ~_@
~ ~ _- \,
~ (k) / (z)
Replied by mark1122 on topic Rebuilt carburetors still leak out overflow tubes
the floats push up on the needles. if the needles do not seat tight the fuel will pass by them and continue to flood the bowls.
i would start be checking the needles and seats.
i would start be checking the needles and seats.
76 KZ, frame gusset work,1200CC.Ported by Larry Cavanaugh, 1.5mm.over intakes, Carron Pipe, ZRX12 rear end, and seat,96zx9 front end.
01 CBR600F4i Track bike.
Cobourg, Ont. Can.
~ ~ ~_@
~ ~ _- \,
~ (k) / (z)
Please Log in or Create an account to join the conversation.
- kaw a bong a
- Offline
- User
- Have a 1978 kz 650 b and a 1976 kz 900z1ltd
Less
More
- Posts: 116
- Thank you received: 0
11 Jul 2010 09:34 #381663
by kaw a bong a
1978kz650b 1976kz900 first bike 1979kz 400
Replied by kaw a bong a on topic Rebuilt carburetors still leak out overflow tubes
Check if you might have put one of the floats upside down,or didnt tighten the float needle nut,or possibly a pet cock problem,I have experienced all of the above at one time or another.and your right also it can be a float height issue.
1978kz650b 1976kz900 first bike 1979kz 400
Please Log in or Create an account to join the conversation.
- kz.chris
- Offline
- User
Less
More
- Posts: 58
- Thank you received: 0
12 Jul 2010 06:57 #381927
by kz.chris
1977 Kawasaki KZ650
Replied by kz.chris on topic Rebuilt carburetors still leak out overflow tubes
I have the exact same issue. Gas spilling out of carb #2 so i rebuilt another set of carbs. Once i put the new carbs in gas continued to spew out of carb 2..
After i let her run a bit the leakage stopped..
weird coincidence or conspiracy? :laugh:
After i let her run a bit the leakage stopped..
weird coincidence or conspiracy? :laugh:
1977 Kawasaki KZ650
Please Log in or Create an account to join the conversation.
- Patton
- Offline
- KZr Legend
Less
More
- Posts: 18640
- Thank you received: 2098
12 Jul 2010 07:21 #381931
by Patton
1973 Z1
KZ900 LTD
Replied by Patton on topic Rebuilt carburetors still leak out overflow tubes
Where clean dry carbs are fitted, a fuel valve sometimes leaks.
With engine idling, try rapping smartly against float bowl with plastic mallet or large screwdriver handle, which often stops the leakage, and restores float valve to proper function.
Good Fortune!
With engine idling, try rapping smartly against float bowl with plastic mallet or large screwdriver handle, which often stops the leakage, and restores float valve to proper function.
Good Fortune!
1973 Z1
KZ900 LTD
Please Log in or Create an account to join the conversation.