ORIGINAL: shivan
Hi Jimcork,
I have been using a dl-50 for about 2 gallons of fuel, initially there was no problem, now i have been getting a vicious increase and decrease in r.p.m at about 40% throttle and it continues throughout unless i increase the throttle to higher than 40% or go below to idle speed. My friends at the field have tried to solve it by turning both the high and low needels to godknows what settings, now i have an engine which works well on idle and any thing above 60% throttle. further from idle to 40% power the engine is very consistent and also i get full power at 60% of the throttle stick movenment.Please can u help me set it right. any suggesstions are welcome
Thanks,
Shivan.
Because yours started well in the beginning here are a few things I would look for. You also returned the needles.
1) Look for air leaks anywhere from the clunk to the tank. You might have a delivery problem.
2) Check the plug gap make sure the gap is correct. I use .024 " you can convert to MM if you like. You might just try a new plug
3) I don't expect a problem with the ignition module or it's power supply
4) My best shot here is you have a bad diaphram in the carb. or trash in the needle circuit for fuel delivery. If you can get a rebuild kit for the carb you might try to replace the diaphrams and check valves.
Hope this helps.