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ok so it fired up with the starting fluid. looks like ill have to pull that carb again. but at least the timing was on. any other suggestions to look for once i pull that animal again?
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Administrator
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Plugged jets.
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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man. you're right again. all 4 slow jets are jam packed with gunk...couldnt even get a tip cleaner or a single strand of copper wire through there. soaking in penetrating oil now. hopefully that'll loosen some of it up enough to get it out. the bigger jets got a cleaning too although they weren't completely blocked like the slow jets were. i guess we'll see in a little bit.
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Administrator
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maybe take 5 minutes and see how the carbs work.
I mean, envision what is supposed to happen.
the air going thru the throttle body sucks the fuel thru some really small passages,
and when they get clogged, it's a job getting them unclogged.
especially if theres old fuel, that has turned to varnish, or a hard kind of gunk,
with some corrosion thrown in.
pull the juts, look in the hole, look at the hole where it exits into the airstream
on it's way to the cylinder.
How you gonna get those little passages open?
it's not like there's 700 psi pushing, it's a rather weak vacuum pulling.
some guys stick a guitar string in as far as it will go,
some let them sit in a pan of carb cleaner overnight,
some try and hit them with 100 psi and blow them out,
some let them shake for a day or 2 in an ultrasonic kind of pan the vibrates
whilst submerged in a weak toilet bowl cleaner.
Rob on the dick van dyke show mentions boiling his carbs to get them unstuck.
me, it took 4 times, the guitar string thing, starting fluid and 125 lbs of compressed
air with a rubber nozzle I made up that fits snug against the hole.
yer close, don't let it beat you.
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also, the jets are #35's. i thought i remembered seeing somewhere that 40's were needed. should i waste my time trying to scrub these out or just buy the 40's?
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Administrator
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I would probably just get the #40s. However you could get a 0.45mm drill bit to open them up.
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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well, i just went ahead and ordered the jets as i couldn't find an .045 bit without buying an entire set, so i figured if i have to order online, might as well just get the jets. Should have bought the bit. I ordered these last friday from powerbarn. they had the wrong address because of pay pal (not their fault) so i contacted them to give them the right one. They replied and said they'd change it. So i get a shipping notice TODAY. again with the wrong address. glad i paid for the quicker shipping since they waited 4 days to ship it. their excuse was that they were at some racers meet. That seems like a poor excuse. Anyone have experience with these guys? are they always this inept?
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Administrator
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I have never heard of "Power Barn" but Old Bike Barn, and Tas Classic Motorsports are notorious for this kind of customer service.
Maybe I should start selling bits out of my set, or do an exchange service for drilled pilot jets? 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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got her going with the new #40 jets. however, I had to crank the idle screw in quite a bit to keep her going....however now it'll run for a little bit ( maybe a minute?) around 2000-2200 and then once its going for a bit, it just slowly dies unless I'm goosing it ever so slightly to give it some gas. I didn't play around with it too much because the wife works midnights and is sleeping right now. Only started it two or three times. Forgot how loud this bike is with the shorty turn-outs. :P Any advice for when I go back out there?
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Ummm, a new wife that dosen't work wierd hours?
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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Haha, shes a good woman...I can't complain. But an update.....fired her up again, and popped the throttle a few times real good and just kept giving a little gas to keep it going until it warmed up. It stayed running after that albeit at 2-3000 rpm! so i messed with the idle screw and got it down to about 1200 after it was warm. took it for a ride and brought it back to the house. was idling high until i turned the screw just a hair and it settled down to a comfortable range. 11-1200. but it seems to want to stay high until i touch that screw after a ride or when i come to a light. and once its down around there...i have to nurse it to keep it going. cant seem to find the sweet spot just yet.
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Administrator
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You have a classic vacuum leak. The rubber boots between the carbs, and head are notorious for this. You also probably need to sync the carbs.
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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ok, im going to take a look at the vacuum leakage today...and to sync the carbs I have to order some things. Any recommendations for a decent manometer set up without breaking the bank? I've seen a couple of home made ones...I could whip one of those up without an issue (the long clear hoses that all meet at one end with some sort of colored liquid in them, lined up on a wooden plank) But is it better in my situation, seeing as how i probably wont use this thing very often, to go for the real thing?
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Administrator
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Here http://www.cyclexchange.net/Carb%20System%20Comp%20Page.htm scroll down to #CA-008
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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well, found the vacuum leak/s and sealed everything up. That seemed to help a bit but didn't entirely cure the sluggishness and whatnot. So i went ahead and adjusted the contacts to factory specs (1-4 was around .009 and 2,3 was around .006) so they def needed some attention. Got them both set around .013-.014 and then checked the timing while i was at it. made a few small adjustments and got it back in shape. There was a noticeable difference after that. Carbs were also way out of sync. took a lot of patience but i finally got them all pretty close to #2. The difference in power out of the hole was great. I can take off normally now, without sounding like a newbie and having to wind it up to 3 grand. haha. Overall this thing runs 10 x's better than it ever has since i've had it. The tach settles in around 1200 when i stop, i've seen the idle recommendation is a bit lower, but at 1000 or lower, it struggles a bit. either way, I have to thank you guys and TOOLS most of all for helping me out here. Much appreciated. Now if it would cool down a bit, I could take this beast for a good long ride!
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Ok, so a few things that have developed since i've been riding this thing a bit. When it's cold it wont stay running unless i baby the gas until it warms up. After a few minutes its fine though. But i've noticed that the power out of the hole is suffering. And when i crank the throttle quickly, it chokes the engine. I'm also getting a lot of backfiring when i back off the throttle between gear changes. I replaced the plugs because after running it in various types of conditions, the old ones were fouled. So just changed them on the 4th and problems aren't as bad, but they still exist. I'm not sure where to go from here.
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Administrator
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Have you checked your points, set the timing, and dwell?
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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I did the points and timing before I synced the carbs. I'm not sure what "dwell" is though. And could it be electrical? I rode it at night for the first time tonight and noticed my tach and speedo would go nearly dark at a stoplight and brighten back up when i was moving. Seems like the battery isn't taking the charge. I mean It would seem that the alternator is generating since everything brightens up once i get moving. Maybe just a shit battery? Oh well...another item to investigate.....
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