February 20, 20206 yr Hi´ When i turn the throttle very fast to "full" speed, the engine take some RPM, but then it dies, sounds like "drowning" it simple stops if i keep holding the throttle on full. If i loose before it stops, it comes again. I changed the sparkplug, cleaned some electrial parts, and cleaned the air-filter, but it didn´t help. Any good advice is welcome :-) Poja.
February 20, 20206 yr Clean out the carburettor jets. Make sure a good supply of fuel is reaching the carburettor.
February 20, 20206 yr I'm assuming you have a 4rt. Why are you turning the throttle very fast to "full" speed? What happens if you turn the throttle very slowly to "full" speed?
February 21, 20206 yr 8 hours ago, pojan said: Hi´ When i turn the throttle very fast to "full" speed, the engine take some RPM, but then it dies, sounds like "drowning" it simple stops if i keep holding the throttle on full. If i loose before it stops, it comes again. I changed the sparkplug, cleaned some electrial parts, and cleaned the air-filter, but it didn´t help. Any good advice is welcome ? Poja. One possible cause could be that the throttle position sensor thinks your going past 100%. Try using some superglue to fix a thin washer or something to the stop to see if it will stop doing that, if so its a position sensor issue. Another possible cause might be that your t-bag filter is plugged, though that seems a bit less likely based on what you indicate is happening.
February 21, 20206 yr Author 11 hours ago, kurtas said: I'm assuming you have a 4rt. Why are you turning the throttle very fast to "full" speed? What happens if you turn the throttle very slowly to "full" speed? If i turn it slow, there is no problem (seems)
February 21, 20206 yr Author 6 hours ago, jonnyc21 said: One possible cause could be that the throttle position sensor thinks your going past 100%. Try using some superglue to fix a thin washer or something to the stop to see if it will stop doing that, if so its a position sensor issue. Another possible cause might be that your t-bag filter is plugged, though that seems a bit less likely based on what you indicate is happening. Thanks´i will try, Where do i place that washer, under the gas cable, or ?
February 21, 20206 yr you need to take the black cover off the throttle body and stick a bit of shim to the casing that the cable pulley wheel would stop against at full throttle. best of luck PS think there maybe photos if you search the forum Edited February 21, 20206 yr by jimmyl
February 21, 20206 yr Before taking the time to change the TPS stop, what happens if you twist the throttle quickly to high throttle -- maybe 7/8 full throttle? If it does the same thing, I doubt adding a shim for the last 1/32 of opening will make any difference. Edited February 21, 20206 yr by sportsawyer
February 21, 20206 yr Yes, it'll be tps going to 101% and the ecu says NO. As described above, put something in the stop in the throttle body to limit the travel.
February 22, 20206 yr 17 hours ago, pojan said: Thanks´i will try, Where do i place that washer, under the gas cable, or ? As jimmyl indicated its under the black cover and add a shim against the casting.
February 22, 20206 yr Sounds to me like you’re experiencing the four stroke cough, basically every four stroke will die if you wrap the throttle on to full really quickly from idle.
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