I did have another thread, specifically asking about Jetting changes whether I should go one step at a time...and I've moved on from that, so I've started this one.
I welcome any assistance please
New to me (relativly speaking..I've had it since October, but only put 2 hours on it before I stripped it down.
PWM38 Carb (tried 50 and 45 pilot. Main:172s. Needle: N3VF, clip 2nd from top). Only thing changed from stock is the pilot and needle position.
See bottom of post for stuff I've done.
Compression around 180psi.
Altitude: Around sea level, problaby up to 100m (328ft) as I am only riding at one location (although I am fixing/tuning it at another...but again, not a huge elevation). My GPS says I'm at 80m when I did the below videos.
Temperature around here ranges from 10-45 celcius (50-113f).
It runs 'fine' in general. It doesn't stall easily when under load at slow speed up hill, it doesn't bog much, it has plenty of power.
The only reason I am concerned is I read that you should jet the bike, and the process to follow...which isn't working for me.
It's also now leaking oil out the powervalve overflow - I didn't notice this before I went to 32:1 (was at 40:1)
I tried to do a leak down test, but I am getting a leak from the right side of powervalve, so I guess until that's fixed, I can't see any other leaks (if there are any) using soapy water sprayed around the engine.
Please note with my videos, I have added subtitles so you know what I am adjusting. They should come on automatically, but if they don't this is how you turn them on https://www.wikihow.com/Turn-On-YouTube-Subtitles
My biggest question is: Is my idle right, as this is what I am basing all my concerns on? I am struggling to find the right airscrew position, I am turning it out looking for higher revs as per the forum sticky, but it's more of a surge...is that what I'm looking for? See first video with 50 pilot -
Someone assisted and suggested that I should start with a leaner pilot, and switch to a 45, so I did that, and I get this
Now, if that surging is what I am looking for, does this actually mean the bike is lean, so I need to go richer?
But, if it sounds like something is off, then what is my next step? Crank seals? This was suggested to me by @kxrob and @2 STROKE YZ DOC in another thread. The other thing that YZ Doc suggested, was that the bike should not run with the air screw all the way in...but it does. Does that tell me it must be an air leak?
Or am I worried about nothing, and should just get on it and ride? Once I get this sorted I need to order new springs...I'm only about double the weight of the recommended weight for stock springs.
Work/replacement that I've done:
Disassembled and Cleaned
Replace Radvalve boot(had a crack)
Changed Pilot from 50 to 45 (KXROB suggestion)
Replaced choke/idle screw as it was stripped (then since found out I should have just replaced the carb with a PWK38 instead)
Muffler packing replaced
Cleaned exapansion chamber with oven cleaner
Swing arm and linkage bearings etc
Cleaned and regreased steering head
stripped and painted frame
Replaced wheel bearings
Replaced air filter
Thanks in advance!