MOPED ARMY

@ajwasp - I down jetted because my plug was black and oily, do you still think I need to upjet?

I run a 70 on a stock cylinder.

I'll check the fuel filter! Thanks!

I down jetted to a 68... and have tried NGK B6HS, B7HS and b*hs plugs - STILL having problems. I have been told from a local moped rider, "hesitation" is the wrong term... I'm "bogging down" I have removed the air filter, and drained all the fuel tonight (in case I got some bad gas, or some asshole put something in my tank) and will refill tomorrow. I will probably get a new fuel filter as well. I was running perfect for weeks... now I can't go a few blocks with out problems! This is a completely rebuilt E50 - new bearings and seals, new crank - everything! I hope some of you Old Skool cats can help me trouble shoot this!!

did you check the fuel filter in the petcock? also may have a small one in the banjo fitting.

check your flow by removing the banjo from the carb, then turn on the gas to see how much flow you have through to the carb, you may be starving out.

Thanks for all the help guys...

Ken, I went back to the 72 Jet... I am not sure I understand what you mean about drilling the carb slide.

So far I can say it happens regardless of jet size (I started with a 74, went to a 72, 70, then 68 and back to the 72), spark plug size (I started with B7HS, went to a B6HS, then back to a B7HS, tried a B8HS and now back to the B7HS again) I changed all my fuel, didn't help. I run premium 91 octane and add an Italian synthetic 2-cycle I got at the local vespa/snow mobile shop. I took off the air filter to see if it was not getting enough air. It started when it got humid in Omaha, but weather has gone back to like when it was running great and still having the same issue.

Mel, I would hate to think that the brand new petcock filters and rebuilt carburetor would already be having trouble, but the tank does have some rust, and it was cleaned out as best as it could be. I've only had this Maxi for a little over 3 weeks and we replaced everything!

I'll drain the fuel again and pull the petcock and see if it has anything clogging the filter screen, and I will pull the banjo filter and see if it may be clogged too.

Timing plug gap and or weak condenser.

Timing can change the follower wears down fast if not lobed.

What color is the spark?

Yeah, thanks Ed!! Can't believe it was something so easy... I was going crazy trying to trouble shoot it and even dumped a tank of fuel in hopes I could get it to run right!