83 suzuki lt125 ignition problem

[Benny T.]

I got this 83 suzuki lt125 four wheeler from my uncle this past summer. He said it ran good and then one day it died on the trail and hasn't run since. I tore the engine down to find a broken piston skirt and a very wore out cylinder. I got all new parts for it and had the jug bored out. Now I got it all back together and I can't get it to fire. It's got excellent compression and I used a service manual to set the timing so I know that's right. The funny thing is when I pull the plug out it fires a weak but pretty noticeable spark. When I put the plug back in though the engine doesn't even think about firing. I'm guessing it just won't make spark under pressure. To solve this so far I've replaced the coil with a brand new one, but it's still doesn't run. The vehicle also has a CDI box and a magneto could either of those be the culprit?

[hondatrikesrule22]

Did you get a new spark plug? If the plug is bad, it won't run evn though it has spark.

[Benny T.]

Yeah that's the first thing I replaced.

[Bodenhart]

Yeah that's the first thing I replaced.

Did you ever solve your problem cause I am having the same issue