Post by timbothegrinch on Aug 12, 2022 12:27:23 GMT -5
I'm not sure where to even start, or where to go from here. My oldest son aquired a 50cc Jonway last year, a non running beat up POS. Anyway, he wanted me to get it running for his birthday. The rectifier visibly Burt, I had to re wire in a new rectifier. The petcock was junk, I replaced it, with new fuel line, and filter. The carb was very gummed up with slime. I installed a new carb. It started, but it didn't start easy. Then after running for 3 minutes it would kill, and not restart. I checked and there was no spark. I changed the plug, coil, and cdi. Then it would start hard, and again run 3 to 5 minutes, kill and could not be restarted. Again no spark! So I changed the stator yesterday. It started and seemed like I was getting closer, until it got warmed up, then it won't restart again! But this time, it has spark, and fuel... So, I'm thinking valve adjustment. I found my tdc, and adjusted the valve lash to .004. But I noticed some slop in the timing chain...anyway I put it back together started it, and all seemed great...until this morning....it won't start at all! It has spark, it has fuel. I'm thinking the timing skipped a tooth! If not, I have no idea what's going on with it! All this time, and money in this pile, and I feel like iv'e completely failed! I kind of lost it, kicked it over, and beat it down with my hammer, so now I need some new plastics.
I gave my son my Lance 50, but man I need a good gas mileage town cruiser. Should I even bother doing a motor swap? Patience, is not my strong suit...but I am compitent enough to do it. And, I just don't have the funds to buy another scooter, but a $350 gy6 I can do.
The first step should probably be to find out if the timing has changed or not and make sure it has compression. Then you’ll know what you’re dealing with a bit better.
I once had a junk scoot given to me. I wound up with more in it than a new scoot like it by the time I got through all of it’s issues. I’d suggest a thorough evaluation of that scoot. If it’s great now aside from engine issues, it may be worth engine repair or replacement. If you think you’ll probably still deal with electrical gremlins, it’s got bad suspension, it’s all rusty and that sort of thing… then maybe it’s time to move on.