1979 Honda CB750

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1979 Honda CB750

John117
Hey guys first time posting. I've been looking for answers to questions here and there but I'm at a loss now.
I bought this 1979 CB750 from a Harley dealer in New Mexico against my better judgment and had it shipped to me. The salesmen said a kid owned it and traded it in. He stated it needed some carb work and I noticed in the pictures it had pods on it so I thought maybe he just didn't know how to sync them. I've dug into it and the wiring is a mess and the compression is as follows 130 90 60 135.
Where should I go from here?
1979 Honda CB750
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Re: 1979 Honda CB750

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Did you do a "wet" compression test. That would narrow down the problem between the rings, valves, or both being bad. You could also put some Marvel Mystery oil, or Seafoam in the cylinders to see if it will loosen any stuck rings, or valves.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1979 Honda CB750

John117
I did read about doing them "wet" I put a spoonful of oil in each cylinder. I'll have to try the sea foam to see if that helps
1979 Honda CB750
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Re: 1979 Honda CB750

Truck
Junk the pods, get an airbox.
It's only illegal if you get caught.

If at first you don't succeed, use more lighter fluid

95% of Harley Davidsons ever made are still on the road... The other 5% made it home.

New Baltimore, Va '82 CB900c, 1980 CB985F/K 'Mutt"
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Re: 1979 Honda CB750

John117
True I am working on getting an air box, but will it help with the cylinder pressure? Also how do I sea foam it if it doesn't run?
1979 Honda CB750
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Re: 1979 Honda CB750

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It will not do anything about the compression, but it will run a LOT better with it once you get it running. Did you take another compression reading after you put the oil in the cylinders? For the Seafoam, just pour it in the spark plug holes, and let it sit on the pistons for a day or two. You can also pour it in the intake and exhaust ports.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)
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Re: 1979 Honda CB750

John117
I put he oil in each and turns it over a few times and then ran the compression test. I will try the sea foam today.
1979 Honda CB750
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