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Post by lshigham on Dec 7, 2010 7:13:47 GMT -5
Found this set for £4 and thought it'd be good for porting. I did fit the 21mm delly, but decided to get the 70cc back in first. Attachments:
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Post by 90GTVert on Dec 7, 2010 7:32:12 GMT -5
So the most reliable pump I've heard of failed already? Even though it's been cleaned, check the carb again and check all lines and filter. I've had hoses starting to deterirate before and send tiny debris into the carb. There it inevitably ends up on the float needle/seat and causes a sealing problem so fuel can seep in when the inlet should be closed. Looks like a good deal on the rust removal set, although you will need smaller bits for some things you get into I would imagine.
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Post by lshigham on Dec 7, 2010 11:55:47 GMT -5
The pump is working brilliantly, when I said that the fuel was being gravity fed I was referring to the old plastic pump. Sorry for the confusion.
I agree with you that something is wrong in the carb, couldn't be bothered to find out what as a 21mm would be a better bet with the larger bore. I did replace the fuel and vacuum lines with Goodyear ones when I did the pump, forgot to mention it.
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Post by lshigham on Dec 10, 2010 9:44:16 GMT -5
A small update. I have the cylinder installed and squish set, just working on the exhaust now, it's having a repack and re-spray before fitting. I'm being hampered by the continuous freezing temps for the past few weeks and serious lack of time. I'll probably be up and running by the end of tomorrow.
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Post by lshigham on Dec 12, 2010 7:21:06 GMT -5
Exhaust fitted and scoot up and running. I'm convinced that there was something wrong with the 17.5mm carb, with a 110 main jet the 21mm is still rich and smoking. With the same setup and the 17.5mm I needed a 130 main.
I'll stick in a 95 and see how it goes.
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Post by lshigham on Dec 12, 2010 12:52:43 GMT -5
Took the carb float bowl off to find it full of silicone debris. Must be a remainant of my attempts to replace the formerly missing gasket with silicone.
It's been given a good cleaning and a 95 main fitted. I've also dropped the needle right down.
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Post by lshigham on Dec 12, 2010 16:25:04 GMT -5
;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D ;D It lives!!! The bottom end is awful because the pilot jet is too large, but the top end (9K+) is bloody good fun! It also sounds like it's going to jump out and eat you It's -5c out there but I don't care. I haven't half missed riding ;D
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Post by 90GTVert on Dec 12, 2010 21:14:39 GMT -5
That's great news! ;D Enjoy it!
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Post by lshigham on Dec 13, 2010 8:49:36 GMT -5
Spoke too soon, head gasket blew again! An easy enough fix and I was back on the road within 1\2 hr. Did some plug chops and found it to be too rich, i'll drop down to a 90.
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Post by gr70sp on Dec 14, 2010 4:57:19 GMT -5
What's a good and easy way to access the plugs on our bikes?
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Post by lshigham on Dec 14, 2010 9:00:36 GMT -5
What's a good and easy way to access the plugs on our bikes? I go in through the seat panel, if you've got a small plug spanner you can go in from the side.
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Post by gr70sp on Dec 14, 2010 10:59:39 GMT -5
So, undo the seat panel and remove it from the top of the bike rather than the side? Isn't that a squeeze? But I can defenatly see how it be easier way as when I did it I had to undo the lower side panels and even then it was mega tight!
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Post by lshigham on Dec 14, 2010 12:52:19 GMT -5
I did originally go in through the side, but I find it's easier from above. Saves bending down too!
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Post by lshigham on Dec 15, 2010 11:01:05 GMT -5
Today's tasks were a roller change (the 5.3g I put in were intended for the stock cylinder, which didn't stay on there 5 minutes), down to 4.5 and repacked the exhaust. It certainly needed that, the muffler had done 3000mi and was only packed with fiberglass when I got it.
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Post by lshigham on Dec 17, 2010 10:37:21 GMT -5
Bloomin' carb froze today, throttle stuck open for an added bonus. Nearly had me off on the icy roads. Took off the filter to find the venturi full of ice. Fortunately I was in a city at the time and was able to pick up a bottle of this: www.silkoleneoil.com/techtip7.htm£18! At a 50:1 ratio that equals expensive. It does work though.
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Post by 90GTVert on Dec 17, 2010 11:01:08 GMT -5
That's gotta suck! Never had that happen on a scoot. Had it happen once in a car in snow. I decided to floor it from a good roll just playing aropund and the throttle hung. It sure will wake you up. lol
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Post by lshigham on Dec 17, 2010 11:16:37 GMT -5
I found out that the stuff is basically just surgical spirits. I feel some bodging coming on!
I'm going to collect come goodies tomorrow;
-covered K&N style filter -38 and 40 pilot jets -92 main -6mm fuel hose -PHBG slide spring (lost mine!) -gasket set (ATM it's got a bead of RTV silicone for a head gasket)
And some other stuff I've forgotten, I'll update when I have it and can remember what I actually ordered.
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Post by lshigham on Dec 19, 2010 12:22:44 GMT -5
The goodies hadn't arrived I'll try again Monday. I had to re-pack the exhaust using a mat, as the fibres were blocking the exhaust flow. The Yasuni's have unusually large holes in the core. Took it up to 68mph at 11500 rpm, I need to knock off 500 rpm to bring it down to peak power. I know that 5.5g gives 10500 and 4.5 11500, so it's fairly obvious what I need. On a side note, it's bloody cold. -10c to be precise.
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Post by 90GTVert on Dec 19, 2010 13:07:42 GMT -5
That's movin'. ;D It wouldn't be so cold if you weren't going almost 70. lol
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Post by gr70sp on Dec 20, 2010 4:10:51 GMT -5
sorry to hijack the thread but my throttles been sticking from friday and its too dangerous to ride it like that in this weather...
I've checked the throttle cable leading into the carb and all seems well, quickly coated it with WD40 and reinstalled.. but still happens..
I know its weather related as i've had the bike for 6 months and its only beening happening since these icy temps, it feels like theres a coat of ice/slush near the throttle when i twist it... when the throttle does stick its only when i've done 3/4 of a turn then there is much less resistance felt and the throttle just seems looser than normal, any help/suggestions would be appreciated!
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Post by lshigham on Dec 20, 2010 4:35:43 GMT -5
sorry to hijack the thread but my throttles been sticking from friday and its too dangerous to ride it like that in this weather... I've checked the throttle cable leading into the carb and all seems well, quickly coated it with WD40 and reinstalled.. but still happens.. I know its weather related as i've had the bike for 6 months and its only beening happening since these icy temps, it feels like theres a coat of ice/slush near the throttle when i twist it... when the throttle does stick its only when i've done 3/4 of a turn then there is much less resistance felt and the throttle just seems looser than normal, any help/suggestions would be appreciated! That sounds like carb icing to me, it's exactly what mine did, and nearly had me off in the process. It's not ice in the cable, it's forming under the slide in the venturi, preventing it from closing. 100=200ml of Silkolene PRO FST per 5l of fuel does the trick, but if you don't like paying that much you can also use surgical spirit or meths. It's all the same thing. Apparently (according to my dealer) premium fuel also helps.
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Post by gr70sp on Dec 20, 2010 7:33:47 GMT -5
hey mate,
are you sure its the carb? i had the carb stripped and fully cleaned on the weekend, reinstalled everything and started it and the throttle still stuck over halfway..?
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Post by lshigham on Dec 20, 2010 10:49:58 GMT -5
Are you certain that the carb was assembled properly? Unscrew the single screw in the top and remove the slide and spring assy. Turn the throttle and see if it sticks then.
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Post by gr70sp on Dec 20, 2010 13:17:27 GMT -5
I did exactly that, the carbside throttle was working perfectly.. The throttle grip feels funny when it happens, it feels like theres a grip underneath my grip twisting at different ratios to what im doing :/ hard to explain!
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Post by lshigham on Dec 20, 2010 14:30:21 GMT -5
In that case, something is blocking the slide inside the carb, possibly debris, ice or something else. Does it work fine ever?
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Post by gr70sp on Dec 21, 2010 1:30:13 GMT -5
It's been absolutely fine before these freezing temps.
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Post by lshigham on Dec 21, 2010 4:40:23 GMT -5
It's been absolutely fine before these freezing temps. Sorry, should have been clearer. Will it work fine for a few mins after being started up?
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Post by gr70sp on Dec 21, 2010 4:53:50 GMT -5
yes, its very temperamental, it will be fine for 5 mins, holding the throttle in the same position for a while then if i try to go any further i can feel the throttle being weird, I know when its going to happen because of the throttle feeling the way it does, its like the tension has increased and if i accell beyond that point it then sticks..
but yeah, its not a permenant thing, its fine, then sticks... then i've got to really work the throttle to get it back.
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Post by lshigham on Dec 21, 2010 5:25:42 GMT -5
That, to me, sounds like ice blocking the throttle slide. You've just described exactly what has been happening to me. There is one way to be sure, run it until it plays up then take off the air filter (quickly, before it melts) if it looks like a slush puppy in there that's your problem.
How much snow have you had? We're on about 6" so far in Hereford, and it's still snowing.
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Post by gr70sp on Dec 21, 2010 6:08:46 GMT -5
it's been around 3/4" but hasn't snowed for the last two days but temps were -11 in the morning yesterday and around -3 all day.
thats how it feels actually, only once its stuck, whenever I attempt to brake the throttle free it literally feels like i'm making a slush puppy with the throttle...
I haven't actually taken the filter off as soon as it happens but ill try next time.. so ice is travelling through the throttle cable directly into the throttle slide where the carb is? I would of thought it would melt once i've had it running for 10-15 mins
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