Question about RTO 150cc Touring Gas Motor Scooter with the lowest price, Free Parts Warranty

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Bug bandit 50cc 2 stroke bogs down

My bug bandit 50cc 2 stroke bogs down and stops on hills or under load, does anyone know what could cause this? thought it might be air but it's not.@

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  • Johannus FS Oort
    Johannus FS Oort Oct 22, 2017

    have you checked if ur 2 stroke oil - fuel mixture is correct

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Hi, Anonymous engine "BOG" is mainly caused by a rich air and lean fuel condition but it can also be caused by a lean air and rich fuel condition this situation rarely occurs and is only caused by the misinformed weekend warrior that owns a toolbox.
The more you open your throttle the more vacuum you are creating in your carburetor venturi and your intake manifold. When you are operating at higher RPM any unmetered air that leaks into your system can become more obvious.
Unmetered air is air that is getting into your system after the fuel has been delivered. If you have unmetered air getting into your system between the butterfly/slide of the carburetor and the cylinder head this will create a lean condition.
All of the rubber components of the fuel system like vacuum hoses and intake manifold that you mount the carburetor to are made of rubber. If none of these components have been changed they are more than likely highly degraded and probably cracked in places to allow unwanted-unmetered-contaminated air into the combustion chamber. Check all of your vacuum lines and vacuum plugs for carburetor synchronization. The vacuum plugs are in the head just after the rubber intake manifolds. The petcock has a vacuum line as well as part of the emission system.
1. Check the intake manifold for fissures.
2. Ensure the bands used to tighten the manifolds down on the intake are secure and have not bound up the manifold.
3. Make sure air box fittings are not warped and fit completely over the carburetor.
Your airbox is metering air and is the first step in a process of consuming air and fuel. The system requires the resistance of the air filter in order to get the proper vacuum to "SUCK" the fuel out of the float bowl and create the proper venturi effect.
Improper mounting and sealing of the airbox will create a small lean effect. This might seem like no big deal but you are inviting dust and debris in your engine that is doing slow damage by not having proper fitment. Fix it so you know it's not contributing to your issue. Pick the low-hanging fruit first.
Do not go and start adjusting anything at this point. It ran fine before. There is something wrong with the assembly or a component. Do not adjust your floats. Get it back to where it was. The moment you start tweaking everything is the moment you lose OEM settings which are a must-have for fine-tuning and maximum performance.
Fine-tuning your carburetor and multi carb syncing come at the very end following the proper procedure established by the Carburetor Gods.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
Why is the engine bogging under acceleration Suzuki FA50 Moped
How To Fix Bogging On Scooter Or Moped
http://www.family-motorsports.net/GY6-50cc-150cc.pdf
Bug Bandit 50 Scooter News and Reviews Scootersales
http://absolutelyscooterparts.net/pdf/CGEN_dawg_scooter_manual.pdf

Posted on Oct 23, 2017

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Posted on Jan 02, 2017

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SOURCE: i have a piaggio zip

The valves are probably in need of re-seating. It is easy to do but a valve spring compression tool is likely to be needed. Most any lawnmower shop would be willing to re-seat the valves for cheap if you bring them the cylinder head. Motorcycle dealer will likely be more expensive. Check around. A compression check should tell the story for sure. Please rate my answer. Thanks.

Posted on Aug 03, 2010

nitro650
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SOURCE: Jonway speedy 50cc moped....2 stroke or 4?

What year is it ? Is the cylinder-head height or shape capable of holding a rocker shaft and valve ?

Posted on Sep 19, 2009

  • 747 Answers

SOURCE: 5 hp honda on a pressure washer. Bogs down and cuts off under load.

sounds like the pump has an issue check for restrictions in the hose as well as the filters look for any oil leak at the pump itself

Posted on Sep 04, 2012

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Hi, Sarel and the usual suspects are:
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Engines dies when going up hill


It isn't a fuel problem, it is a power problem. Any bike will slow down on a hill. The bigger the engine, the more power is available to maintain speed. 50cc just isn't much power to pull a 150 pound man up a hill.

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