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  #16  
Old 06-29-2013, 04:24 PM
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BA80 BA80 is offline
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Sometimes just riding the damn thing will fix little stuff.
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Greg

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

― Albert Einstein

80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

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  #17  
Old 06-29-2013, 04:25 PM
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Quote:
Originally Posted by BA80 View Post
So, now you have it narrowed to 2 carbs. That fuel has to be going to the cylinders, the air box, or the earth.
Greg, the manifold boots and intake valve tract were clean when I had the carbs off but that really doesn't mean jack after running the engine anyway. The airbox and intake boots looked clean when I had the carbs off but I'll check them again. I'd have to send some oil to Blackstone for a UOA to see if the oil is contaminated with fuel.

I'll pull the air filter and check the airbox boots again but I think <cringe> that the leak is slow enough that there's not enough fuel in the line and filter for the fuel to make it all the way from the carb to the airbox or the cylinder(s) before it evaporates.

I have not yet tried leaving the fuel taps set to Prime to see if I can empty the tank into the cylinders or all over the floor. Some other time, perhaps.
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1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
1979 XS1100SF: "Bush" W.I.P.
2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk"
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  #18  
Old 06-29-2013, 04:39 PM
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Park it with the nose up hill and everything will go to the airbox if the floats are where it's coming from.

My driveway is uphill and the SF will fill the airbox if I forget to turn off the valves.
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Greg

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

― Albert Einstein

80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

The list changes.

Visit XS11.org too......
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  #19  
Old 06-30-2013, 02:57 PM
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3Phase 3Phase is offline
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Question No leaks or are the carbs just faking it until I look the other way?

I left the bike out on the sloped driveway overnight, nose high, with the fuel taps on Prime and the airbox lower half removed to see which carb, if any, was losing fuel but there were absolutely no leaks anywhere.

Apparently the carbs decided to band together and act all normal and stuff now that I'm eyeballing 'em so, of course, there was not a drop of fuel missing from the lines or filters and assembly grease wouldn't melt in there precious little mouths. The engine fired up almost instantly when I pressed the Start button. I really, really, really want to kick it now.


Sadly, one of the vacuum gauges in my homebrew carb sync tool seems to have gone 'sproing!' yesterday. It won't return to zero and it just doesn't read right any more. Okay, all together now -- "Just one more thing!"

I quit dinking around and splurged on one of those fancy K&L vacuum sync gauge sets on the web for half of their regular retail price.
I could have bought a Morgan Carbtune for about the same money, split, stacked, and delivered but I like looking at a set of nice round gauges instead of a stalk of writhing stix and the seller is practically right next door in Nevada instead of the U.K. so they should be here after the 4th of July.

In the meantime I have to go apply some voltage to a fuel tank and dunk it in Evapo-Rust until it comes clean. That should keep Columbo and me out of trouble for a little while.
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-- Scott
_____

1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
1979 XS1100SF: "Bush" W.I.P.
2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk"
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  #20  
Old 06-30-2013, 03:13 PM
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Quote:
Originally Posted by 3Phase View Post
Apparently the carbs decided to band together and act all normal and stuff now that I'm eyeballing 'em
Ain't it funny how they seem to do that very thing.

A friend of mine, I won't mention Ivan's name, had a float valve that wouldn't quit leaking and he got really upset and smacked the carbs with a hammer.................HARD! He had to fix his choke lever but he hasn't had a problem since.
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Greg

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

― Albert Einstein

80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

The list changes.

Visit XS11.org too......
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  #21  
Old 06-30-2013, 03:50 PM
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3Phase 3Phase is offline
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Given the size, knowledge, and singularly focused determination of the friend with the hammer I am not at all surprised that those poor innocent carbs are still ringing right along like stunned (but suddenly very happy and well behaved!) little fuel-filled bells!

What a bummer about the lever though....
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-- Scott
_____

1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
1979 XS1100SF: "Bush" W.I.P.
2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk"
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  #22  
Old 06-30-2013, 03:55 PM
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The lever is permanently disfigured but still functional.
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Greg

Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.

― Albert Einstein

80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.

The list changes.

Visit XS11.org too......
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  #23  
Old 07-01-2013, 05:33 AM
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WMarshy WMarshy is offline
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Quote:
Originally Posted by BA80 View Post
The lever is permanently disfigured but still functional.
Arnt we all lol.
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'79 XS11 F
Stock except K&N

'79 XS11 SF
Stock, no title.

'84 Chevy K-10 "Big Blue"
GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws

"What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~
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  #24  
Old 07-01-2013, 08:58 AM
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3Phase 3Phase is offline
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Hey now! I resemble that remark but it was a cement truck driver what done it, not a hammer!
__________________
-- Scott
_____

1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
1979 XS1100SF: "Bush" W.I.P.
2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk"
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  #25  
Old 07-01-2013, 06:14 PM
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Hey! I was a concrete truck driver, but I didn't do it! =8-D
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Down to two 1978 E's. Both stock air boxes with K&N filters, one with 81H pipes and carbs,
One with Jardine 4-1 pipes. 8500 feet elevation.
03 Honda ST1300 ABS
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  #26  
Old 07-04-2013, 11:58 AM
unicorncomputer unicorncomputer is offline
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Did you find out what the problem is/was. I am having similar issue with my number 1 carb. I will find gas on the bottom half of the carb, replaced the bowl drain washer, will do the bowl gasket next.



Quote:
Originally Posted by 3Phase View Post
I left the bike out on the sloped driveway overnight, nose high, with the fuel taps on Prime and the airbox lower half removed to see which carb, if any, was losing fuel but there were absolutely no leaks anywhere.

Apparently the carbs decided to band together and act all normal and stuff now that I'm eyeballing 'em so, of course, there was not a drop of fuel missing from the lines or filters and assembly grease wouldn't melt in there precious little mouths. The engine fired up almost instantly when I pressed the Start button. I really, really, really want to kick it now.


Sadly, one of the vacuum gauges in my homebrew carb sync tool seems to have gone 'sproing!' yesterday. It won't return to zero and it just doesn't read right any more. Okay, all together now -- "Just one more thing!"

I quit dinking around and splurged on one of those fancy K&L vacuum sync gauge sets on the web for half of their regular retail price.
I could have bought a Morgan Carbtune for about the same money, split, stacked, and delivered but I like looking at a set of nice round gauges instead of a stalk of writhing stix and the seller is practically right next door in Nevada instead of the U.K. so they should be here after the 4th of July.

In the meantime I have to go apply some voltage to a fuel tank and dunk it in Evapo-Rust until it comes clean. That should keep Columbo and me out of trouble for a little while.
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  #27  
Old 07-04-2013, 01:39 PM
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3Phase 3Phase is offline
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Thumbs up All good this morning

Quote:
Originally Posted by unicorncomputer View Post
Did you find out what the problem is/was. I am having similar issue with my number 1 carb. I will find gas on the bottom half of the carb, replaced the bowl drain washer, will do the bowl gasket next.
If that doesn't fix it, check the float bowl itself for cracks. I had a set of carbs with one leaky float bowl that had a hairline crack. It looked like someone used a 300lb 1" drive impact gun to put the drain screw back in the float bowl and for some reason it cracked the bowl around the drain.


I believe the starting and fuel loss problems are fixed for now. The fuel filters were both full of fuel, no air bubble, and Columbo just fired up on the first hit and idled smoothly (for certain values of 'smooth') at ~450/500 RPM when I let go of the enrichener.

I need to fix the '80G carbs or put on a handlebar lever so I can use the XJ carbs without messing with the enrichener by hand. Right now I have the enrichener bar reversed so the XJ's little cable fitting is on the left side of the carbs so I can just grab it and hold it out while the engine starts but it's kind of annoying to stand there and hold it while the engine warms up.
__________________
-- Scott
_____

1982 XJ1100J: "Baby" SS Brakes, '850 FD, ACCT
1980 XS1100G: "Columbo" SS Brakes, '850 FD, ACCT
1979 XS1100SF: "Bush" W.I.P.
2018 Heritage Softail Classic 117 FLHCS SE: "Nanuk"
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