yturroiepe
29.05.2021 20:17:02
Engine Has High RPM But No Pulling Power here
See full version: 2 Stroke Trouble Shooting Guide
Engine Has High RPM But No Pulling Power here
Check magneto coil with an ohm meter. Set Ohms meter to 2K or 2000 setting. Place Ohms meter positive and negative contacts to contact points on top of magneto. Ohms meter reading should read 300 to 380 ohms across the blue and black contact points. Also check for loose contacts and/or high corrosion. If open or shorted magneto coil is found, replace magneto coil. If magneto coil is good, it is possible that the magneto is not properly grounded to the engine due to the epoxy coating on the magneto. Using fine grit sand paper, lightly sand the underside of the magneto before re-installing the magneto. If still no spark proceed to step #6.
Good Spark but Engine Will Not Start
Check cylinder compression. (Very rare issue unless engine has been used extensively over many years).- Inspect top and bottom head gasket for any leaks. Remove top four cylinder studs, check for broken piston rings, heavy scouring on cylinder wall or hole in the top of the piston. If cylinder compression is good and engine still does not start, proceed to step #12. more
Possible flooded engine: Follow instructions in step #2 above. You can also try to give a squirt of starting fluid at the air cleaner opening. If engine still does not start, proceed to step #9.
One thing to keep in mind is Lectrons are performance products that deliver fuel in a different manner than a traditional jetted carb. The sound is typically "fuller" vs. "fluffier." The difference is sound is often confused with a difference in performance, especially for a throttle position that will not affect the actual riding characteristics of the bike (closed throttle position or 1/10th open). Sound can often be taken into consideration when tuning, but should not be the sole reason for an adjustment. more
A: If you whack the throttle open (going from idle/low rpm to mid-range), and the motor gags like it wants to die, your rod is most likely too lean. If it gurgles or stutters, it is too rich. Adjust it in ¼ turn increments. here
Q: If I see smoke and spooge, do I need to lean it out? [links]
Q: Why is my top end flat? here
The stator definitely would not be my next swap. I'd adjust the idle mixture first. You have to get it started and let it warm up first. Then adjust the mixture screw to achieve the highest RPM. Then turn the mixture screw 1/8 turn in to be sure you are on the safe side (rich). Adjust the idle speed if necessary. That probably won't get it, but it might, it's free, and it's a good thing to do on occasion anyway. The next thing I'd check is the spark plug. See if it is wet or dry or fouled etc. I prefer to use iridium plugs for their superior cold starting ability, although if everything's right they are not necessary. more
Also, if it is harder to start from slower cranking, check the battery voltage. Charge if needed. here
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3. Ethanol fuel breaks down quickly.
As ethanol evaporates the fuel looses octane and becomes what is known as “stale”. This causes hard starts and engine rattle as well as loss of power and engine damage. A good fuel additive will enhance correction to fuel break down for up to 2 years. [links]
1. Debris in gasoline caused by Ethanol.
Varnish Gums form in the fuel tank and in the carburetor bowl as E5, E10 & E15 ethanol fuel ages. These particles can clog Filters and Needle Jets. Modern day fuel additives break down the enzymes into sub micron sized particles that can be easily burned during the combustion process.
2. Excessive water in the fuel and phase separation.
Ethanol attracts moisture from the atmosphere and forms a ethanol and water mix in the gasoline. Ethanol blended fuel will naturally hold 0.5% water in separation, but when water levels exceed this threshold, or when fuel cools significantly, the water/ethanol mix drops out of suspension which is called phase separation. Excessive water in the fuel causes engines to run rough, stall and can lead to internal engine damage. A good fuel additive allows the water to mix with the fuel and get burned off to create a dried out tank result.
4. Ethanol causes lost power and lost performance.
Ethanol added to fuel does not allow as much energy as traditional gasoline. This results in poor engine performance. A good adjustment additive will break apart large clusters of fuel molecules, creating more surface area. This in turn allows additional oxygen to react during combustion which results in complete fuel burning and reduces toxic exhaust emission.