Back in the saddle

It was foggy and cold but riding to work was the best start to the day, the 200 is on the bench at least for the next three weeks, I'll have a good look to see if I can find any reason for it not to work, it's gotta be electrical, anyway....so it continues.

P200E - 1, Me - 0

Dropped the engine, defeated for now, time is running out before I need to ride it to events, no time to run it in properly before riding 200 kms on the open road on consecutive weekends. 177 is clean, fresh oil, I'll get that back in today and get it going, then I'll go over the 200, I've got a list if potential causes from good folks across the globe trying to help. Hopefully it will be an obvious fix with the block up on the bench.

Last chance

Between work and family commitments, the weather and the shorter days I just can't get longer than an hour with it to get the new engine right. Tomorrow is the day, I'll get it right because I have to, I have a run in two weeks or so and would love to be on the 200 to help with the run in, OR I'll be dropping the engine and putting the DR177 back in, I'm missing what nice days we have had and some upcoming runs to consider as well. I feel trapped using a car, I miss scooting, so D day is tomorrow, Stand by for an update after that.

Ah ha gotcha!

Running out of things to eliminate in the hunt for what, in the end, could only be an air leak, I performed a classic troubleshooting method, the good old leak down test, I took the exhaust off and plugged the stub, piston to tdc, air filter off and pour clean petrol into the carb throat until it reached the top, wherever the leak is will soon become evident as the fuel will leak out of it, noticeable unless its the clutch side seal. It ran from under the air box, still to check the gear oil to see if its fuel free though, 

I pulled the carb and air box off and saw something I hadn't given a second thought before, the lower of the two is the one supplied with the parts for the new engine, the upper is a Vietnamese special. The 200 one has been widened to within an inch of its useable life, in this case a mm, so I believe this is the culprit. I swapped it for the other and will put it all back together today. Hopefully that's the end of it.

Fingers crossed

After doing the rounds asking the big questions, the brains trust is banking on the fly side seal. I can pull the choke out and the idle doesn't change, dropped the gear oil, no fuel smell this time round after the clutch seal was replaced last time. I read today another way to check for an air leak was to tape up the clutch breather and see what happens. I just replaced the fly side seal, getting the other one out wasn't pretty. I whacked everything back together, filled the oil back up and decided to leave it until tomorrow. Bit of luck I can tune it in tomorrow and ride it to work on Friday, riding my push bike is fun and all, but...

Still not right

 

It will start and idle no problem, from cold it will even rev with throttle when I give it a blip. I rode it  about a km down the road, gears are tight and it pulled great. Once the engine warmed up and I stopped, it died and would only idle? see video, when I apply throttle you can hear the intake sucking and it's not revving, more like firing every second or third rev, smoing a bit and eventually burps, farts and dies. Lucky it was a nice day for a walk....
I've tried everything to get it revving when warm. Pulled down and cleaned carb and jets twice, I'm running a 55/160 idle, 160 air, BE3 diff., 116 main with a 118 on standby for the Sito +. Plug is B6ES, ends up black dry and sooty. Fuel is premix 2%. Timing checked three times and is 23btdc, cold compression is 135. While idling, I have tried every 1/8th position on the mix screw from 2.25 to 3.75 turns out, tried two needles, even swapped out the clutch side seal after I pulled it down after having the same issue on initial start up....

update

I had the same issues with the engine not revving, when I apply throttle it's sucking air quite clearly, but only firing every second or third rev? I decided to park it up and see if I can sort it out, re check the timing, stator, and start again, I tried riding it up the street and it just bunny hopped and was missing power strokes all over the place, I did get one good bap of revs on the stand, but couldn't get it to do it again.
B6ES plug, black and dry, mix screw didn't seem to make much difference but I need to just work through it slowly.
standard jets, timing set at 23 btdc, it idles nicely, gets a bit better as it warms up, starts first kick each time after the initial start up.
I was hoping to take it to the monthly club meet in Geelong this week, don't think I'll be making the 150km round trip this month.
Stay tuned.