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Old 28 March 2005, 16:56   #11
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Ouch, lets hope that doesnt happen.

The sound effect is spot on, and yeah I would agree the carb clean, and I think thats the next route to follow, specially seeing as fuel had been sat in the engine for a while and has no doubt Gum up and clogged the Carbs..

Which cleaner did you use ? been searchin forums and it looks like the Quicksilver PowerTune is the popular choice..

(If anyone knows where I can buy sum from in West Cowes id be grateful, as im working over there 2moz.)

Thanks for all your help!!

Tom.
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Old 28 March 2005, 16:59   #12
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Go to your local car spares shop its about 3.50 a tin
Graham
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Old 28 March 2005, 17:02   #13
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Ah rite, I was wondering about that, but thought that using one for a Car engine might have differant chemicals that could do damage to the internal seals or sumin, anyone think thats an issue or should I just get sum..
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Old 28 March 2005, 17:15   #14
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Quote:
Originally Posted by TommyFitch
...and yeah I would agree the carb clean, and I think thats the next route to follow, ...
But u said it revs. If it's gummed up how does it do that? Grasping at straws, I fear. Turn the fkin mixture screw anti clock a turn.

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Old 28 March 2005, 18:15   #15
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I just used a generic one <joe soaps carp and choke cleaner...> from the local car store... (5 euro..) I dont think it makes much difference...

mmm - when my carbs were dirty the engine had no problem revving - but couldn't run slowly... furthermore - the butterfly pivots were gummed up - so when you opened the throttle and closed it again - the throttles didn't actually close - so it just kept on revving - unless the engine was under load - in which case it just died....

On the other hand - in my case the engine was running fine last October - so I'd really shy away from adjusting carbs that were adjusted fine last time I used it.,.. why should they go out of adjustement lying in the garage for a few months ???
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Old 28 March 2005, 18:56   #16
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Point taken that I might be shying away from a possible cause looking for an easyfix, and I will try adjusting the mix as said, but symptoms do run along the lines of lc0021, where on using the fast idle lever on the 703, where after picking up the revs, she doesnt always return back to a normal idling speed, where I spose it would seem the Carbs are not moving freely, spose this could also be unrelated and down to slack in the control cable or connectors..will check.

Anyhow, will have a go with your advice, and report back later.

Thanks Again !!
Tom.
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Old 28 March 2005, 19:03   #17
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.... so I'd really shy away from adjusting carbs that were adjusted fine last time I used it.,.. why should they go out of adjustement lying in the garage for a few months ???
Well they won't but there's no saying they were adjusted properly so, since we're distance mechanicing, the solution is to get the engine running correctly. If opening up the mixture screw does it that'll be fine and TommyFitch will have gained the confidence to make the adjustment. If, after a while, the fuel flowing through it cleans out the passageways and it becomes rich rough, he'll have the confidence to set about it again and Tommy will become a mixture adjusting expert. Job done.

I won't ask you how your engine came to be so gummed up after just a few months storage especialy since your profile says you are an engineer, cos that wouldn't be nice.
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Old 29 March 2005, 02:34   #18
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Quote:
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I won't ask you how your engine came to be so gummed up after just a few months storage especialy since your profile says you are an engineer, cos that wouldn't be nice.
You can ask - I'm thick skinned so I wont take it personally..... I just stopped using it in October and didnt drain the carbs or spray the engine.... mainly because I didn't plan on that day being the last day of the year.... It was really the throttle pivots which gummed up, so they wouldn't close freely... but it's hard to believe they gummed up so quickly... strange but true...

And now a small hint... just because my profile says Engineer - dont assume that it means " GOOD Engineer..." ;-) - more important to remember this when dealing with Doctors, Accountants, Lawyers and policemen....
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Old 29 March 2005, 06:36   #19
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And now a small hint... just because my profile says Engineer - dont assume that it means " GOOD Engineer..." ;-) - more important to remember this when dealing with Doctors, Accountants, Lawyers and policemen....



I was just winding you up. You took it well. Cool.
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Old 31 March 2005, 17:59   #20
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Just a quicky, to say thanks to this Forum, my Yam 30 is back and running sweetly..

JW was rite, opened up the fuel mix 1/4 turn helped keep her running..and I put a gd helping of Carb Cleaner thro it, runs smoothly and idles happily around 900 to 1000..

Thank You to all who offered help, and it just shows how useful this forum is !!

Regards to All

Tom.
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