02GF74
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| posted on 5/10/09 at 07:55 PM |
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pilot jet?
should the pilot jet - looks like the one in piccy below - be drilled all the way through?
as far as I can see, there is a hollow tube after the threaded bit with 4 holes drilled into the side (on left in piccy) but no hole all the way
through (seems to me they are not drilled).... but the slot in the base has a blind hole quite a few mm deep.
[Edited on 5/10/09 by 02GF74]
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whitestu
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| posted on 5/10/09 at 08:13 PM |
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They should have a hole all the way through, but the hole is very small.
On my old yam 750 they got bunged up after it had stood for a few years and were quite hard to clear. Very fine stiff wire might do it. Otherwise soak
in carb cleaner and blow them through.
Stu
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02GF74
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| posted on 6/10/09 at 08:20 AM |
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ta.
yep - that makes sense ... and explains a lot of things.
It makes sense it goes all the way through since a) that is how the fuel would go - the holes in the side are for air mixing plus b) why bother
drilling a blind hole??
been trying to poke a wire but although I am sure it is less than 0.5 mm, that still is too big. (0.2 mm is the word)
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Peteff
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| posted on 6/10/09 at 12:22 PM |
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Try a bristle from a wire brush but if it's a new jet it shouldn't need clearing. The holes for the side are like the ones in an emulsion
tube. Are the jets Mikuni ?
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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02GF74
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| posted on 6/10/09 at 12:34 PM |
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yes mikuni.
33 years old but bike, low mileage, has been standing the last 10 years - carbs are spotless inside.
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02GF74
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| posted on 6/10/09 at 09:16 PM |
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yey - a strand from some mountain bike gear cable done the trick.
runs much much much better..... still a couple of probs - need to figure out why the cold start is jamming against something plus one needle valve is
leaking - seems ot be different one each time I take the carbs arpart 
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