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87 yamaha YFM350ER moto-4This is a discussion on 87 yamaha YFM350ER moto-4 within the ATV/UTV - Yamaha forum, part of the ATV/UTV Forums category; Replaced CDI box,new coil, new spark plug cap , new stator assembly from ricky stator and still no ignition fire? ... |
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#1
11-26-2007, 09:34 PM
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 87 yamaha YFM350ER moto-4 Replaced CDI box,new coil, new spark plug cap , new stator assembly from ricky stator and still no ignition fire? With new cdi box i get very weak fire from plug wire without plug cap on and don"t have fire all the time. You have to pretty much touch it to groud and barely start to pull it off and see very very small spark so small you have to do it in dark to see it. All resistance checks are good for the 2 pickup coils and source coil. The old cdi box no spark at all and old source coil only 25ohm ? Any ideas im pulling my hair out!!!  |
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#2
11-26-2007, 09:46 PM
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| Re: 87 yamaha YFM350ER moto-4 Maby Try bypassing kill switches. worth a shot. |
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#4
03-16-2008, 08:54 AM
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 Re: 87 yamaha YFM350ER moto-4 Just a hunch, But check your ground wires. |
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