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Discussion Starter · #1 ·
I picked this thing up for next to nothing replaced the cdi box after i got it running now the neutral light wont got off when in gear and the key no longer kills the motor can the cei box have something to do with this
 

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Good question

the 86 and 87 Fourtrax require a model specific CDI. The 87 Foreman has its own CDI. The 88-93 Foreman have their own as well. So If you bought a CDI for the wrong model or an aftermarket CDI yes this could cause problems

Was it running when you bought it?
 

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Discussion Starter · #3 ·
Not when i picked it up had to clean her up some got her goin rode it around my yard after awhile it would die when i put it in gear let it set for a few min and it qould be fine for a lil bit then act up again
 

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If you can get it running with regularity I would say the old CDI is ok and would put the old CDI back in and try some of the following.

Click my link to download the service manual. Good troubleshooting diagnostics in there

There鈥檚 a lot to check on an unknown machine.
Does your oil light come on momentarily and then go out when you turn ignition on? Oil temp sensor or fan control. Not likely if you only ran it a bit.

Test to see if the engine note changes when you click the choke off and on. The starter valve could be worn and not seating properly鈥攕o your choke is always on. That鈥檚 where I think you should start

Do you get a buzzing noise when it dies? Then could be fuel pump is not getting any fuel to pump or the pump is not working. I don鈥檛 think that鈥檚 it though.
 

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I picked this thing up for next to nothing replaced the cdi box after i got it running now the neutral light wont got off when in gear and the key no longer kills the motor can the cei box have something to do with this
wrong ignition switch ?, ignition not wired right ?. neutral switch bad.
 
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Can you kill it wth the kill switch?

Also You didn鈥檛 answer my question about the CDI. Is it possible you bought an 86-89 CDI?
his first post said it wont shut off with key ^^^^.
 
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The Stock OEM CDI will not cause any harm to other components. A china CDI... extremely high risk, if it even works right at all, for a few minutes. Just don't ever do that and you got nothing to worry about.
 

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Thanks for letting us know! You got awfully lucky, there should have been smoke rising the moment you plugged that china CDI in. China ignition coils smoke OEM CDIs too, in case you ever think about trying that stunt. You already know china carbs and fuel pumps are junk... only the wealthiest of wealthy folks can afford to buy china parts. LOL
 
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