Strange Jet sizes
Strange Jet sizes
Hello All
Took my MK1 out for its first run yesterday since I brought it before Christmas. The Carb has a mind of its own, bogging out, revving high, all sorts.Took it apart today and found that the main jet is 172 when the manual shows 132, the pilot jet is 50 and manual shows 45. The air screw was set correct at 2 - 1/4 turns. Shall I just return them to standard sizes ? I am not after performance just reliability.
Thanks in advance
Steve
Took my MK1 out for its first run yesterday since I brought it before Christmas. The Carb has a mind of its own, bogging out, revving high, all sorts.Took it apart today and found that the main jet is 172 when the manual shows 132, the pilot jet is 50 and manual shows 45. The air screw was set correct at 2 - 1/4 turns. Shall I just return them to standard sizes ? I am not after performance just reliability.
Thanks in advance
Steve
- knackeredMk1
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Re: Strange Jet sizes
If the air filter is intact and oiled then it will certainly run better with the standard jetting. What exhaust and silencer do you have
.
Just make sure everything is properly connected and sealed on the intake side of the engine.

Just make sure everything is properly connected and sealed on the intake side of the engine.
Re: Strange Jet sizes
It's a new, oiled filter and the exhaust system is standard, all very strange. Back to standard it is.
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Re: Strange Jet sizes
BE AWARE, someone might have bunged some very large jets in to compensate for an undiagnosed air leak.
You might get runaway racing of the engine
.
Mike
You might get runaway racing of the engine


Mike
VFORCE REEDS-MUGEN HEAD AND BARREL-WHITE POWER-ALL ON MY WISH LIST!!
- knackeredMk1
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Re: Strange Jet sizes
+1 as I said earlier.
Re: Strange Jet sizes
Thanks gents, will let you know how I get on.
Cheers Steve
Cheers Steve
Re: Strange Jet sizes
Standard jets added, needle set to clip 3 (was on top clip), carb kit from Leisure Trail = New Bike !!! runs like a dream.