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Where did you buy the engine?
With the troubles you have been having, the RF noise and stopping at 2800 rpm you maybe having ignition problems.
Just remember, you need three basic things for a gasoline engine to run.
1 Fuel
2 Air
3 Spark
There are plenty of other factors that can come into play, but those are your basics.
If you are already up and running then it dies, check fuel and spark.
Is it breaking up / missing, or does it just shut down?
Do you have a temp gun to see what the temp is when it shuts off?
Where do you have your needles set at?
What battery are you running?
From what I have seen, you have only changed to spark plug, right? |
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robinhood and i have multipul versions of this motor. we have had real good luck. what we have found is that the stock settings are real close. its hard when all of us are giving you ideas but were all trying. i would start now by setting both needles at 1 1/4 out. turn them both in until they stop then back them out. buy a new gallon of fuel and mix it at 50:1 run it with the cowl off. try running it with a fully charged 4.8 volt battery. if it still runs this way switch to a 6 volt for testing reasons. do not run it for more than 10 min or so on 6 volt do this as a test. report back.