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Post by bendover on Aug 27, 2015 20:32:13 GMT -5
Hey guy! Scooter bogged out, hesitated, backfired and died today. It have bogged a couple of times before, increasing in frequemcy last couple of runs, until today it bogged several times and cut out, hard tp start, then died again, could not start at all. How does this spark plug look? Image: imgur.com/OoyGmFEInfo: Minarelli lc, 70cc stage6 sport pro mk2, leovince zxr, stock airbox without snorkel, 17.5 carb |
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Post by spaz12 on Aug 27, 2015 23:05:03 GMT -5
Super rich would be my call
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Post by 90GTVert on Aug 28, 2015 7:25:59 GMT -5
I agree. Very dark/black and wet = rich.
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Post by bendover on Aug 28, 2015 9:54:28 GMT -5
Thanks guys!
Scooter doesnt seem overly ruch - it does not 4-stroke. If I remove air box I cannot go WOT without scooter dying. If I put on choke, it bogs a bit but does not cut out. This kind of contradicts the spark plug which I agree seem super-rich.
Theory:
I have an aftermarket oil pump that pumps a bit more than stock (30% or 50%, cant remember which one) because I was told it was either this or pre-mix to my cylinder, which both suck, but this oil pump suck less - no pun intended. Is it probable/possible that I have too much oil in the gasoline, while still having (somewhat) correct air/fuel mixture?
UPDATE:
I had a 97 main jet which seem way over the top, no clue why the freck i put that there. 70cc stage6 sport pro mk2, 17.5mm carb, leovince zxr, stock air box desnorkled. I put on the smallest i had, a 90. It starts but dies after maybe 20 seconds of driving, then cant start until I wait for a while. Very weird?
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Post by jdl357 on Aug 29, 2015 15:30:48 GMT -5
I've got a very similar setup as yours except for stock carb and #90 jet is what I've found to work best. Also after I put on my bbk I turned up my oil pump too much and started oil fouling my plugs. Had to turn it down to a little bit ahead of the line up marks. Now it runs great. As for your pic, it looks really rich.
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Post by jdl357 on Aug 29, 2015 15:32:11 GMT -5
I've got a very similar setup as yours except for stock carb and #90 jet is what I've found to work best. Also after I put on my bbk I turned up my oil pump too much and started oil fouling my plugs. Had to turn it down to a little bit ahead of the line up marks. Now it runs great. As for your pic, it looks really rich.
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Post by Sitticuss on Aug 29, 2015 19:41:10 GMT -5
Rich
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Deleted
Deleted Member
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Post by Deleted on Aug 29, 2015 19:45:29 GMT -5
Looks almost as rich as Bill Gates. Almost.
Bill
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