Discussion Starter · #1 ·
So recently I purchased a pretty rough 200SX used. Me and my buddy have been working on it for a couple weeks now, the original carburetor was missing a bunch of parts, so I installed a close replacement. For the time we set up a container with a fuel line installed into it for a gas tank, petcock on the original leaked. We tested spark and it was perfect, so after installing the spark plug we started it annd it fired right up. Ran it for about an hour to test the transmission, no issues at all. He left and for about an hour I cleaned up the garage to park it, tried starting it again and it would not run. Fuel was good, compression seemed normal, so I tested the spark like before, it now had no spark. For about a week I took apart almost all of the tubing over the wire harness and checked connections, could not make it spark. Finally decided the CDI must have quit and purchased a new one, it delivered yesterday and like before, good spark and ran. Drove it around for about an hour, parked it in the garage and shut it off. Came back maybe 2 hours later and it lost spark again. Does any of this make sense? In the two weeks or so of working on it I also had installed a new stator/pulse generator, new ignition coil and a brand new NGK 2923 spark plug. Interestingly enough the guy that sold it to me said it had no spark, yet somehow in the ride home in the back of the truck it somehow got spark when we started working on it. I have checked to my ability every single wire going into the CDI, nothing seems to be shorted and everything has continuity to its source. I know this is a long story but I'm genuinely lost. I really don't know what to check at this point, everything seems to check as it should. Best thing I can think to replace now is the CDI connector, though I did try cleaning it and tightening the 6 connections inside the plastic connector, nothing. If anyone has any thoughts as of what I should check that would be great, I've read many posts similar but can't seem to find the issue on this wheeler. I may just have to pull this thing apart again and really dig deep into the wiring, if anyone knows where I can find a complete wiring diagram that would also be very helpful. Thanks all!