• Register now! It's free and easy.
  • Show your bike to the world, upload a photo today!
  • Hi Guest, did you know we have a dark style? It might be easier on the eyes at night time! Try it out here: Style Chooser

No power in engine

caedicius

New Member
Joined
Aug 6, 2020
Messages
4
I recently completed my first build, and I thought I put everything together correctly. After filling the tank with 1:16 oil gas mix, I attempted to start it like everyone does by pedaling with the clutch pedal squeezed, and then slowly letting the clutch engage as I hold down the throttle. When I let go of the clutch, the engine does turn over, but it does not provide any thrust at all, and quickly dies down to a stop. It will not idle, and will only run if I assist it by pedaling. Is there a part broken, or do I have to adjust something?
 


Akutey

Well-Known Member
Joined
Dec 10, 2018
Messages
454
Choke lever should be down after first signs of life. If it was then move on.

Check the carb float is at 21mm. Sometimes the jet was not tightened in and came loose. Make sure the carb is clean and kept like that.
Wipe with paper towel your intake manifold at the carb, then were it bolts on the cylinder to check for leakage and then under the cylinder head at the top end metal gasket. Head torque's around 10ft-lb/120in-lb +/-10%.

98460
 

Don_Parsons

Well-Known Member
Joined
May 6, 2020
Messages
1,172
16:1 gas too oil is a petty thick mix my friend...
If the oil saturates the porcelain in the plug it """might""" be hard for the spark plug too work properly...

I know,,, thats what the owners manual says too run for oil/ fuel mixture,,, but thats still a fairly thick mix...

We did a 32/1 of Premium Fuel too Non- synthetic oil,,, conventional oil for 1 too 2 tank fills,,, been running 40:1 from there on in on all 5 Two- Smoke engines... a little bit boggy on the bottom end at 3000 elevation,,, 23c temps,,, needle clip in the 2nd slot from the top... 0.70 main jet...

A medium tan plug,,, we run alot leaner in the mountains above the 4700 to 7600 elevation mark...

Don
 

caedicius

New Member
Joined
Aug 6, 2020
Messages
4
Update: I was not putting the choke lever down, and after doing so it did live a bit longer. Additionally, I found that the cable that runs into the carburetor from the throttle was not sealed. After correcting these, it did live a bit longer before dying, and occasionally provided thrust. It is still burping and dying pretty quickly. I will check the carb float soon. Would running oil that is too thick prevent the engine from running? I had read 16:1 somewhere, but I also read that putting in too much oil simply caused it to become smoky. Issue persists, but is slightly better.

Choke lever should be down after first signs of life. If it was then move on.

Check the carb float is at 21mm. Sometimes the jet was not tightened in and came loose. Make sure the carb is clean and kept like that.
Wipe with paper towel your intake manifold at the carb, then were it bolts on the cylinder to check for leakage and then under the cylinder head at the top end metal gasket. Head torque's around 10ft-lb/120in-lb +/-10%.

View attachment 98460
 

wan37

Active Member
Joined
Oct 12, 2011
Messages
787
Get up too speed 5 to 7 mph with choke on,release clutch lever completely. Then once started squeeze clutch lever back in that way you can flip choke off while still rolling with engine still running Then play with throttle and then letting clutch lever out and pedal with engine to help it get up to engine only. So to idle the clutch lever has to be squeezed
 
Last edited:

wan37

Active Member
Joined
Oct 12, 2011
Messages
787
If it still won’t go check carburetor slide or clean the carburetor the jet could be clog or lose.
 

Akutey

Well-Known Member
Joined
Dec 10, 2018
Messages
454
You'll be fine with the excess oil, switch over to 32:1 after this tank. The worst you get is alot of smoke.
 
Last edited:

Don_Parsons

Well-Known Member
Joined
May 6, 2020
Messages
1,172
And attempt to warn it up like a chain saw engine,,, nothing worse then reving a engine when its cold...

No one in our group of riders uses the choke or carb primer button,,, we turn the fuel valve on,,, get pedalling,,, we crank the throttle while keeping the pedalling going and we can feel the engines coming alive...

We lightly feather the clutch """out""" while holding the throttle partly open preventing the engine from stalling,,, Sometimes it works,,, sometimes it doesn't,,, LOL... 😁

Yes,,, once you get the first tank full of fuel burnt off,,, thin out your fuel too oil mix,,, you'll notice that your engine will run way smoother 👍...
 
Top