1976 intake to carb leak?


Information and questions on GL1000 Goldwings (1975-1979)
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badsine
Posts: 2
Joined: Sun Sep 28, 2014 8:43 pm
Location: mattoon, Illinois
Motorcycle: 1976 goldwing 1000

1976 intake to carb leak?

Post by badsine »



im in the process of looking at a 1976 1000 new brakes tires needs a battery carbs have just been rebuilt but there is a supposed leak where the carbs bolt to a peice of aluminum then looks like they bolt to the motor now before questions are asked the carbs look whole sitting in a box all four along with the air box and a bag of screws now i am mechanicly inclined as well getting ready to go back to school to finish up a mechanic degree but i was told the bike ran good he had the carbs rebuilt and had a small leak where they mount, can i get away with black silicone on the mating surface or will it harm the carbs being so close to gas


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dingdong
Posts: 4025
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: 1976 intake to carb leak?

Post by dingdong »

You should never use silicone to seal carb leaks. It needs to be done properly or you will constantly be pulling the carbs to fix. Not exactly sure where you are referring to that is leaking. If you mean where the carb body bolts to the plenum there is a seal in there that needs to be replaced. If the carbs were (rebuilt) why weren't the seals replaced in the process. If those seals weren't replaced what else was missed. I would ask about the rebuild. Who did it and what parts were replaced.

Go to this site www.randakksblog.com and read what he has to say about gl1000 carbs. Good luck.

Tom
badsine
Posts: 2
Joined: Sun Sep 28, 2014 8:43 pm
Location: mattoon, Illinois
Motorcycle: 1976 goldwing 1000

Re: 1976 intake to carb leak?

Post by badsine »

Thank you for pointing out that they are p lenums not intakes yes and they leak is where the carbs bolt to as a unit then bolts on the head it's on the spot where they bolt to plenum I don't know why
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dingdong
Posts: 4025
Joined: Thu Apr 08, 2010 8:35 am
Location: Oklahoma City
Motorcycle: 1976 gl1000
1993 gl1500A
2004 NRX1800 Rune SOLD

Re: 1976 intake to carb leak?

Post by dingdong »

Each carb body has a separate fuel passage seal at the air plenum side. If not replaced with rebuild they almost always will not reseal. Old hard rubber.
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RBGERSON
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Location: SCOTTSDALE, AZ
Motorcycle: 98 SE GL 1500
had every year from 75 to 83

Re: 1976 intake to carb leak?

Post by RBGERSON »

Three sources float needle, o ring at the carb to plenum and the plenum gasket. Float needle can be the needle, the seat or bad float setting..pull cap off look down into the throat at the jets tops..if gas is coming out there = float needle seat etc. issue. If not look into the plenum if coming from the carb = o ring if from the plenum center seam = that gasket..if you can't tell put some paper in and watch for the start of the leak. All this with a gas source hooked up at least 6' above the carbs to give right pressure.

Something like this but mine not high enough. the carbs must be level check with a small level across the plenum


HAD LOTS OF GOLDWING 75-83
NOW INTO 1500'S..RIDING A 1998 SE

FAIR WINDS,
RB
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