Well.. Today I'm both happy and annoyed with my self. Last summer I spent hour after hour trying to get the petcock to flow enough gas to make the bike pull at higher RPMs. I overhauled the carbs, changed fuel-filter and more. I was convinced that the only thing I had changed from when the bike ran well was the little pocket-bike fuel-tank. I heard of someone that had the same problems and found out that it was a faulty coil. These bikes seem to run quite smooth on low RPMs, even when firing on only two of the cylinders. As the spark wires are in bad condition and one of the coils seemed to have leaked, I ordered a set of green Dynas with wires.
While I waited for the Dynas I found an old clip from when I did the first test run. And what do you know.. The bike was wired up with only the bare essentials, and with spring loaded connectors. Seems like I was wrong about the fuel tank, and I decided to check the wiring. There was all sorts of tings wrong with the weather pack connector for the coils:
It's a bit hard to see, but it's supposed to be three pins in this connectors in this plug. The middle one is 12V, the two outer pins are for each coil. One of them is pushed back by the bent plastic guide-pin. This was one of the first connectors I made, and I didn't have any previous experience. I managed to get two different pins mixed up. They are almost identical, but when you use the wrong one the won't lock in place. This error made one of the coils go dead of course, and I'm pretty sure the bike will run as it should after fixing this
Pretty annoyed that I wasted countless hours, and only got one trip on the bike last summer :/ But pretty happy that I found the error. I was going install the Dyna coils, but it seemed like they needed some adapters:
I decided to just fix the connector in stead. After I put everything together, I noticed it's possible to remove the adapters from the old ones. Doesn't matter.. I wanted to test the old ones anyway. I'll change coils later
I have a lot more wires to sort out, but I'm getting the hang of it and taking the time it needs to be done correctly.