Recent content by beastly

My CRF50 fully automatic 49cc 4 stroke clone motor is not running right, it has barely any power. Starting from a standstill takes longer than it should and it can barely climb the slightest inclines. Just put new gaskets on the top end. Compression test read 145psi. I have tried messing with...

2 half (180 degree) turns. It is just sitting a tiny bit off the bore

Its back together, I want to make sure that timing is not the issue. Everything seems okay, but it still does not run idk why

Any ideas anyone?

I mean when the cam timing chain is off, along with the sprocket and at TDC, should you be able to rotate the plate that the cam sprocket bolts onto? The plate I'm taking about rotates the rockers and the valves.

Ya know, move freely 180 degrees.

I have them lined up as you say, but does TDC mean that the thing the cam sprocket bolts to can move freely?

I don't hear a hiss. Today I and triple checked the carb. All jets, and the passages you told me to check were clean and I could see daylight through them. Gas flow to the carb is good. I took off the head today, and everything looked great. Sprayed a little wd40 on the piston and went on...

Okay will try and do these things tomorrow. Do you think it could maybe have a bent valve or bad valve seals?

It happened as you described. It created a vacuum and gas got on my hand. It also started to sound like it wanted to turn over. It almost sounds like it is running when you try to start, but it never starts. Once, i sprayed a little starting fluid into the cylinder from the spark plug hole and...

Yes I did turn it over, but only once or twice.

Thanks so much for the replies! I bypassed the loom because a lot of the lights and things on the bike I'm working one are not working. Newer NGK plug, installed about 1 week ago, but it has black soot on it from another bike. The spark color is white/bluish if I recall correctly. I spun the...

Hi all, Im new to the forum, and I need help with my crf50 clone engine. It is a 50cc 4 stroke fully auto. It doesn't have gears or a kickstart, so I am relying on electric start to turn it over. I kinda bypassed some of the electrical, but it gets spark and turns over. I checked for...