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Ski-Doo: S-2000 and older 1998 and older, all models in the S-2000 chassis and older chassis models
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Old 01-04-2017, 10:48 PM
Earldog Earldog is offline
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Default Ski-doo

My buddy has a 99 formula 670 and for some reason it is bogging. If we take the breather box off it goes fantastic put it back on and it boggs again. We changed plugs 2 or3 times. Changed clutch,changed carbs ,changed air box with new one,no pinched lines, 148 psi compression on both cylinders, with it idling sprayed the entire engine with starting fluid and it didn't suck any in anywhere. Just looking for an idea if someone has one. We are stumped
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