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Ty80 Eats Plugs


ar22
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have a ty80 but it has a habit of eating plugs, runs perfect otherwise

ngk b6 fitted

new coil

is it likely to be needle jetting or electrical

may change points next, any idea on gap settings etc

any help greatly appreciated

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yes b6hs is its favourite

has a seperate kill switch, I will have to look there when I get a chance

I need to check the points but am unsure of the correct gap, any ideas

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kill switch shorting should normal just cut out the entire ignition, not reduce plug life or cause hard starting?

as long shot, wierd as it seems, check main bearing play in radial direction. As bearings get loose, the point gap changes from crank flopping around, the timing and amount of magnetic flux also changes. It also varies with speed as the crank climbs to different points in the bearing circle.

reducing the point gap is a bandaid but might help. I think normal is 012 to 016 inches? Try reducing to say 010 and see if it helps. Have done that many times as short term fix. Utlimately new bearings.

Was the autolube disconnected but not removed? that causes double oiling amount at idle and fouls plugs quickly.

general mechanical issues:

compression good? weak engines foul

exhaust plugged? overheats engine and plugs

air leaks, running lean overheats plugs.

k

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