« previous next »
Pages: [1]   Go Down

Author Topic: Carbs leaking like crazy! Please help  (Read 758 times)

0 Members and 1 Guest are viewing this topic.

Offline Cb750k7.

  • Full Member
  • *
  • Posts: 14
  • Bikes & music make the man.
Carbs leaking like crazy! Please help
« on: December 05, 2014, 03:45:24 PM »
I took the carbs apart on my 1977 CB 750 to clean them. I put them back together to the best of my abilities. Started up it and it ran but while it was running it leaked out of all four bowl draining nipples. I made sure the drain screws were all tight. Could it have something to do with the float height and it's overflowing and draining? Do I need to take the carbs out again to fix this problem or can it fix it with them still attached to the engine? Also leaking from one or two of needles in the front of the carb which I believe is the gas intake needle. I set it to 2 turns open. Any help on this issue would be great, it's my first time messing around with these carbs


Sent from my iPhone using Tapatalk
Logged
"There are some things nobody needs in this world, and a bright-red, hunch-back, warp-speed 900cc cafe racer is one of them - but I want one anyway, and on some days I actually believe I need one."  Hunter S. Thompson

Offline Stev-o

  • Ain't no
  • Really Old Timer ...
  • *******
  • Posts: 34,503
  • Central Texas
Re: Carbs leaking like crazy! Please help
« Reply #1 on: December 05, 2014, 04:49:20 PM »
Pull em off, you have a float issue.  They may be stuck open...
Logged
'74 "Big Bang" Honda 750K [836].....'76 Honda 550F.....K3 Park Racer!......and a Bomber!............plus plus plus.........

Offline BobbyR

  • Really Old Timer ...
  • *******
  • Posts: 12,365
  • Proud Owner of the Babe Thread & Dirty Old Man
Re: Carbs leaking like crazy! Please help
« Reply #2 on: December 05, 2014, 05:06:48 PM »
Quote from: Stev-o on December 05, 2014, 04:49:20 PM
Pull em off, you have a float issue.  They may be stuck open...
\
You are getting Gas from the carb overflow at the bottom. The floats can be put on upside down and other things. You will have to thank them down. Sorry, but I have the same carbs.

The screws are actual mixture screws unlike the earlier years. They have a small O ring to stop gas from leaking from them.

I had mine off four times since I tried to take shortcuts. Sorry.
Logged
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline harisuluv

  • Master
  • *****
  • Posts: 2,009
Re: Carbs leaking like crazy! Please help
« Reply #3 on: December 05, 2014, 07:19:58 PM »
Looks like there is gas above the overflow tube.  Looks like that bowl gasket is at least leaking, combined with other things perhaps.

I could be wrong but it looks like there is some remnants of previous attempt to stop it with silicone sealer or something, so you might as well pull them off and fix them proper, while you're in there you can clean them a bit and set float level/inspect valves etc.
Logged
Pages: [1]   Go Up
« previous next »