@spookdog The pump on the later engines just come straight off? Leaving the spline intact, but no dramas about that. Although I did remove that as well and just created a blanking plate.

@spookdog

Ah yes that’s the one ! 👌

@calum I will definitely recheck that next time i´m working on the bike but as far as i remember these bushings only had some slight axial play and no mentionable radial play as seen in the video.

@spookdog gaskets are all fine and bikes holding compression and wants to run. Managed to take her out for a local ride yesterday with a fresh plug in to see what the plug looks like. If memory serves me right I haven’t got all the tools I need to get the flywheel and stator off so I was hoping

It’s weird though because I’d have thought that if I had an air leak the bike would run extremely lean and get hot? Because not once did the bike ever get warm

Whilst riding the symptoms where the same as before
-really high idle (it sometimes died down a bit during the ride) I haven’t got a Rev gauge so I’m just guessing but majority of the time idle sat around 5k.
-only start on choke, it’d enter powerband (hits hard enough to still lift the front end too) but will start to splutter and struggle to fully Rev out (typical signs of not enough fuel).
-put the bike in gear and it’ll move without touching the throttle

None the less she still ran good enough for her to drink a tank of fuel and get home safe without a breakdown.
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I have to admit @SpookDog I have a very strong sense that it is that crank seal that’s gone, all the evidence is there + It’d be due something like crank seal since I’ve owned her a few years now since coming over from France and not once have I had to touch the engine.

Like I explained to my dad when he was making guesses at what’s wrong with it, “you can’t have a fire without air, so that bike won’t be to Rev any higher without air to allow it to do so since like a fire if you smother it with fuel to fast it won’t burn”. I could be wrong but that’s my logic.

Ps hope you’re doing well bud, how’s everything with life and the bikes and scoots?

@spookdog said in Crankcase Sealant; What's Everyone Using?:

Blue Hylomar

This was what was recommended to me and did nothing but leak. I've used it on several components and never had success. As I say, the bond stuff seems to be the goto kiddy everyone is using these days. I recently redone my DT engine with the Hondabond and it hasn't had a drop since.