Operation Awesome Bike!

[Ixion]

Checked compression readings, but it was a bit hard to get a figure. It uses those teeny weeny mini spark plugs, which my good compression tester didn't fit. So I had to use an old one with the rubber cone push in and hold thing, which was also too large for the plug hole. So there was a bit of leakage past the rubber cone

Front cylinder was shoing something around 80psi (+ leakage). Rear a bit more (Or I did a better job of holding down the tester) , over 80psi.

Maybe lowish, but it's hard to know how much to allow for leakage, Should be enough to run anyway.

Removed rear plug cap, engine wouldn't start at all on front cylinder. Replaced rear, removed front, engine started , bike rode OK, allowing for it being a 125 pulling a dead cylinder. Apparently about the same with the rear only running as with both

Checked carbs, and the weird maze of fuel pipe. Rear cylinder carb receiving fuel OK, but front wasn't. Switched to Prime and front supply pipe had petrol coming out of it. Reconnected pipe, disconnected rear plug, front in, and it started OK on the front cylinder.

Idled fine, but any thottle at all and it dies immediately. No backfiring , no popping, just died.

No sign of excessive smoke, no oil residue in the exhaust.

Front carb to be checked out, and try to sort the fuel pipe maze.

Cylinders may or may not be a bit down on compression.

[ital916]

Checked compression readings, but it was a bit hard to get a figure. It uses those teeny weeny mini spark plugs, which my good compression tester didn't fit. So I had to use an old one with the rubber cone push in and hold thing, which was also too large for the plug hole. So there was a bit of leakage past the rubber cone

Front cylinder was shoing something around 80psi (+ leakage). Rear a bit more (Or I did a better job of holding down the tester) , over 80psi.

Maybe lowish, but it's hard to know how much to allow for leakage, Should be enough to run anyway.

Removed rear plug cap, engine wouldn't start at all on front cylinder. Replaced rear, removed front, engine started , bike rode OK, allowing for it being a 125 pulling a dead cylinder. Apparently about the same with the rear only running as with both

Checked carbs, and the weird maze of fuel pipe. Rear cylinder carb receiving fuel OK, but front wasn't. Switched to Prime and front supply pipe had petrol coming out of it. Reconnected pipe, disconnected rear plug, front in, and it started OK on the front cylinder.

Idled fine, but any thottle at all and it dies immediately. No backfiring , no popping, just died.

No sign of excessive smoke, no oil residue in the exhaust.

Front carb to be checked out, and try to sort the fuel pipe maze.

Cylinders may or may not be a bit down on compression.

Exactly! So now I have to pull the carb off and open it up and check it. I have taken tank and air box off plus disconnected the fuel lines I have to, spilling lots of gas in the process haha.So carb is just waiting to come off bike and opened up. I will be doing that tomorrow arvo after work. Anyone keen to come have a looky can. I'm not getting intimidated by the carb *I hear they can be tricky to pull apart*, and hopefully having a look plus plugging it back in correctly will fix the problem. , she's a beast and aptly named black betty! P.s the blue has grown on me so I think I'll keep it!

[motorbyclist]

Checked compression readings, but it was a bit hard to get a figure. It uses those teeny weeny mini spark plugs, which my good compression tester didn't fit. So I had to use an old one with the rubber cone push in and hold thing, which was also too large for the plug hole. So there was a bit of leakage past the rubber cone

Front cylinder was shoing something around 80psi (+ leakage). Rear a bit more (Or I did a better job of holding down the tester) , over 80psi.

Maybe lowish, but it's hard to know how much to allow for leakage, Should be enough to run anyway.

Removed rear plug cap, engine wouldn't start at all on front cylinder. Replaced rear, removed front, engine started , bike rode OK, allowing for it being a 125 pulling a dead cylinder. Apparently about the same with the rear only running as with both

Checked carbs, and the weird maze of fuel pipe. Rear cylinder carb receiving fuel OK, but front wasn't. Switched to Prime and front supply pipe had petrol coming out of it. Reconnected pipe, disconnected rear plug, front in, and it started OK on the front cylinder.

Idled fine, but any thottle at all and it dies immediately. No backfiring , no popping, just died.

No sign of excessive smoke, no oil residue in the exhaust.

Front carb to be checked out, and try to sort the fuel pipe maze.

Cylinders may or may not be a bit down on compression.

good work

lol that the fuel system is retarded!

Exactly! So now I have to pull the carb off and open it up and check it. I have taken tank and air box off plus disconnected the fuel lines I have to, spilling lots of gas in the process haha.So carb is just waiting to come off bike and opened up. I will be doing that tomorrow arvo after work. Anyone keen to come have a looky can. I'm not getting intimidated by the carb *I hear they can be tricky to pull apart*, and hopefully having a look plus plugging it back in correctly will fix the problem. , she's a beast and aptly named black betty! P.s the blue has grown on me so I think I'll keep it!

go for gold, just be aware of how many turns you undo certain things. if they're not tight to begin with, do them up and count the turns to do so, that way it all goes back together properly without drastic changes to air/fuel/mix etc. compare to the working carby and you'll be sweet as.

oh and the blue is nice, but once she's up and runnning there's all sorts of mods you can make....

beginning with simplifying the fuel system.... replace with a fuel pump/injectors and go for the turbo

[Squiggles]

How bout just having one fricken diaphragm!

[2wheeljunkie]

how abt jus trading it in for a 1098S..jokes dush..how the carb look once u pulled it apart..better question..did u find a dead mouse in there??

[Ixion]

No mouse. Apparently he found a mis-assembled and inoperative float instead. Should be a nice cheap simple fix.

[motorbyclist]

far out

i pulled the other carby open, but didn't bothr to look at that one

fail

[ital916]

Gah people are saying the front carb is correctly assembled and the rear isn't but i'm going with the fact that tghe rear works so will make the front look like the rear lol. Will see what happens.

[xwhatsit]

Eh? I'm confused. Make sure the wire loop holding the float valve is indeed hooked around the float tang, on both carbs.

[ital916]

Eh? I'm confused. Make sure the wire loop holding the float valve is indeed hooked around the float tang, on both carbs.

But the rear carb is working! Thats the one wear the loop is not hooked around the float tang. That means the front carb is correctly set up therefore I have not found out why the front cylinder carbs is preventing the front cylinder from producing power! How can the rear cylinder work with a carb with the float incorrectly set up?

[xwhatsit]

Both should look like this: http://www.kiwibiker.co.nz/forums/at...4&d=1208676398

Whether or not it works broken, if it doesn't look like that then it's not correct. Make sure float height is correctly set (when float valve is correctly connected), get the figure from the manual. If you don't have a figure then you can make an inaccurate guess (not at all ideal, but worth a try) by setting it to the height when the float valve is parallel with the gasket face. Bend the little tang to make adjustments. Be careful, only tiny adjustment needs to be made to produce a big difference in float height.

You sure you just didn't mix the carbs up?

[ital916]

UPDATE: The bike will eb back soon, umm I seem to hav egone and splurged a little as I am now the new owner of some bar end mirrors, a new exhaust to out on the bike and a new jacket *hey while I was at it i might as well do some new bike gear shopping* lol. The seat and bodywork will be sent away as soon as the bike is back, that will leave some clip ons and the seat and headlight and then she is ready to roll!

[ital916]

UPDATE: The bike will be back soon, umm I seem to have gone and splurged a little as I am now the new owner of some bar end mirrors, a new exhaust to put on the bike and a new jacket *hey while I was at it i might as well do some new bike gear shopping* lol. The seat and bodywork will be sent away as soon as the bike is back, that will leave some clip ons and the seat and headlight and then she is ready to roll!

[pocketcracker]

yep im glade to see ya have all ya correct riding gear while driving ya mummas car , ya my new hero ! ..... your a good roll model for our children Keep up the good work ! ,

Ps, maybe have a running bike that can enter and exit the coroloop b4 customizing ? just a thought !

Ps.... Still standing firm with slight backward lean awaiting my propeller !

[ital916]

yep im glade to see ya have all ya correct riding gear while driving ya mummas car , ya my new hero ! ..... your a good roll model for our children Keep up the good work ! ,

Ps, maybe have a running bike that can enter and exit the coroloop b4 customizing ? just a thought !

Ps.... Still standing firm with slight backward lean awaiting my propeller !

I'll be back on two wheels soon enough, i've only been off them for three weeks! lol. Mate..we should head back to whangarei to find that trophy wife. haha