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post #1 of 3 Old 12-12-2010, 12:08 AM Thread Starter
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coil wires

just bought a 97 zrt 600 in storage for 12 years, 792 miles. tore it all apart and cleaned everything but wich wires from the one and two coil goes to wich cylindars? got it to start but backfires like crazy and no power. think i put them back on wrong. also heard that these have middle cyl problems. any truth to that rumor?
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post #2 of 3 Old 12-12-2010, 06:54 AM
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10-11 Mileage:
09-10 Mileage: 1000
08-09 Mileage: 1000
07-08 Mileage: 1000
06-07 Mileage: 1000
Arctic Cat sleds (and most others too) fire all the plugs at the same time, multiple times per revolution. A twin will fire both wires twice each revolution, a triple three times (once per 120 degrees because every 120 degrees one of the pistons is at TDC). One of the pulses fires the plug to ignite the fuel/air mix, the other times the pulses are "lost" as the plug fires with the piston not ready for the fuel to burn. That prevents having to have a complex distributor of some kind to route the electricity to the cylinder that needs it. Conclusion: on models like the Cats it does not matter which wire goes to which cylinder. You can put any wire on any cylinder and they are all firing every 120 degrees.
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post #3 of 3 Old 12-12-2010, 06:58 AM
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10-11 Mileage:
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08-09 Mileage: 1000
07-08 Mileage: 1000
06-07 Mileage: 1000
As far as it backfiring...check your reeds, maybe a sheered timing key..check stator ohms, check trigger ohms, check for mouse nests in the air box or exhaust can/pipes, check compression, repalce plugs, make sure your coil jumper wires and CDI wires to the secondary coils are on the right terminals. There is a large female connector that goes on the large male end on the coils so it is pretty hard to hook them up backwards. Also unscrew and clip the spark plug wire ends there may be corrosion in them where the cap goes on. Clean and use dielectric grease on the cdi/stator connectors, check all ground wires...that should give you a few things to check. maybe there is a reason it sat for so long.
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