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Another bogging thread
Discussion at Motorized Bicycle Engine Kit Forum in the 2 Stroke Bicycle Engines & Kits forum. Howdy.
Recently got a Grubee/Black Stallion 66cc/80cc kit and got it up and running after a couple of ...  | | 
09-17-2009, 12:29 AM
| | Motorized Bicycle Newbie | | Join Date: Aug 2009 Location: Athens, GA
Posts: 15
| |  Another bogging thread
Howdy.
Recently got a Grubee/Black Stallion 66cc/80cc kit and got it up and running after a couple of days. Fun.
Now a week later, however, the engine is a much softer "pokka pokka pokka pokka" rather than the loud "brap brap brap brap" in the first few rides, no power, doesn't idle, just slowly dies, and dies immediately when I pull the clutch.
I've checked the plug, the fuel lines, I've disassembled and reassembled the carb, checked the seals, float, mixture, idle screw. Put the clip on the second groove.
The clutch is fine, everything seems fine. Maybe the actual engine is flooded? I'm going to try riding with the gas cap off, just to cover all the bases. Nope. 
It used to idle. It used to run. It didn't used to die when I disengaged the clutch. What's up all of a sudden?
I know it's getting fuel. I know it's getting a spark (it runs for a while) and the plug is tan.
Ghaaaa! |
09-17-2009, 12:39 AM
| | Motorized Bicycle Elite Member | | Join Date: Feb 2009 Location: australia
Posts: 265
| | Re: Another bogging thread
Quote:
Originally Posted by MasonMcD  Howdy.
Recently got a Grubee/Black Stallion 66cc/80cc kit and got it up and running after a couple of days. Fun.
Now a week later, however, the engine is a much softer "pokka pokka pokka pokka" rather than the loud "brap brap brap brap" in the first few rides, no power, doesn't idle, just slowly dies, and dies immediately when I pull the clutch.
I've checked the plug, the fuel lines, I've disassembled and reassembled the carb, checked the seals, float, mixture, idle screw. Put the clip on the second groove.
The clutch is fine, everything seems fine. Maybe the actual engine is flooded? I'm going to try riding with the gas cap off, just to cover all the bases. Nope.
It used to idle. It used to run. It didn't used to die when I disengaged the clutch. What's up all of a sudden?
I know it's getting fuel. I know it's getting a spark (it runs for a while) and the plug is tan.
Ghaaaa! | Start with it running and spray some wd40 around the intaket head and base of the jug if she idles up you got a leak. Check head studs are tight  |
09-17-2009, 01:27 AM
|  | Motorized Bicycle Elite Member | | Join Date: Jun 2009 Location: Washington St.
Posts: 391
| | Re: Another bogging thread
I agree with STV most likely it's the headbolts.
__________________
Put something FUN between your legs.. |
09-17-2009, 01:34 AM
| | Motorized Bicycle Newbie | | Join Date: Aug 2009 Location: Athens, GA
Posts: 15
| | Re: Another bogging thread
Where are the headbolts? |
09-17-2009, 01:47 AM
|  | Motorized Bicycle Elite Member | | Join Date: Aug 2009 Location: orange county, ca
Posts: 559
| | Re: Another bogging thread
those two things sticking out of frankenstein's neck...
sorry...
the four nuts on the top of your motor. around your sparkplug. DON'T overtighten them, or crank on them while your motor's hot. |
09-17-2009, 07:02 AM
| | Motorized Bicycle Newbie | | Join Date: Aug 2009 Location: Athens, GA
Posts: 15
| | Re: Another bogging thread
Quote:
Originally Posted by bairdco the four nuts on the top of your motor. around your sparkplug. DON'T overtighten them, or crank on them while your motor's hot. | Nah. Those were tight. How do you check if the engine itself is flooded? The float in the carb looks like it's doing its job. |
09-17-2009, 07:35 AM
| | Motorized Bicycle Elite Member | | Join Date: Feb 2009 Location: australia
Posts: 265
| | Re: Another bogging thread
whats ya plug look like? |
09-17-2009, 07:51 AM
|  | Custom Builder / Dealer | | Join Date: Mar 2008 Location: Los Angeles, CA.
Posts: 1,435
| | Re: Another bogging thread
Make sure the wires to the CDI & kill switch aren't being pinched & grounding out on the frame or engine.
When you say it "dies immediately when I pull the clutch", makes me think its the wires. (i say this because I had a similar problem)
Also, get rid of the plug in connectors & solder & heat shrink the wires.
Last edited by Venice Motor Bikes : 09-17-2009 at 12:20 PM.
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09-17-2009, 10:46 AM
|  | Godfather of Motorized Bicycles | | Join Date: Jan 2008 Location: Ashtabula county, Ohio
Posts: 7,124
| | Re: Another bogging thread
Replace the spark plug with a new, quality plug.
__________________
If it ain't broke, and you mess with it long enough, it will be. |
11-02-2009, 10:23 PM
| | Motorized Bicycle Newbie | | Join Date: Oct 2008 Location: Chico, Ca
Posts: 14
| | Re: Another bogging thread
Try increasing the idle in areas 3 and 4 see video. Sometimes you may have to adjust your carburetor settings from the weather changes. YouTube - Motorized Bicycle Carb Tuning pt 2 | | Thread Tools | | | | Display Modes |  Linear Mode | 
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