Hi all, I'm new to this forum and have landed here, like many others, with a problem. Some brief history:
I bought this 97 Road King in July of 2019. It has 32k on it and supposedly someone had done some engine work to it at one time (this will come into play in a bit). In late fall 2020 it started to have the telltale valve seal problem of burning oil on fire up. It got worse... quickly. Okay, no problem, I can do valve seals. Tore it down in-frame and sure enough, valve seals are crumbling. Popped the jugs to do base gaskets and noticed the piston ring gaps are all 100% in line. Ugh... okay. Pulled the pistons (stock slugs), cleaned everything up and clocked the ring gaps properly. Put it all back together and she runs great with no more oil burn on fire up. Yay, success, except.....
On fire up, even the most minute crack of the throttle causes blowby out the rear pushtube of the rear jug. It does this for a few minutes after starting and then goes away... mostly. I always let it warm up for a couple minutes before riding, it doesn't leak a drop of oil out that pushrod tube. It has the Mikuni TM42-6 carb with a K&N adapter, the head breathers are plumbed into the air filter base. The disturbing part is that it didn't do this before I put valve seals in it so clearly it's something I did wrong but I'm at a loss as to what.
Anyone able to reach into their archives and give me a clue as to what I screwed up? Greatly appreciated.
Rob
I bought this 97 Road King in July of 2019. It has 32k on it and supposedly someone had done some engine work to it at one time (this will come into play in a bit). In late fall 2020 it started to have the telltale valve seal problem of burning oil on fire up. It got worse... quickly. Okay, no problem, I can do valve seals. Tore it down in-frame and sure enough, valve seals are crumbling. Popped the jugs to do base gaskets and noticed the piston ring gaps are all 100% in line. Ugh... okay. Pulled the pistons (stock slugs), cleaned everything up and clocked the ring gaps properly. Put it all back together and she runs great with no more oil burn on fire up. Yay, success, except.....
On fire up, even the most minute crack of the throttle causes blowby out the rear pushtube of the rear jug. It does this for a few minutes after starting and then goes away... mostly. I always let it warm up for a couple minutes before riding, it doesn't leak a drop of oil out that pushrod tube. It has the Mikuni TM42-6 carb with a K&N adapter, the head breathers are plumbed into the air filter base. The disturbing part is that it didn't do this before I put valve seals in it so clearly it's something I did wrong but I'm at a loss as to what.
Anyone able to reach into their archives and give me a clue as to what I screwed up? Greatly appreciated.
Rob