Chito
XS650 Enthusiast
So... 81. Bored 1 over. Stock everything. I was one up on the pilot jet. It had been wrecked. Put it back together. It Ran great for 4 or 5 years, but the exhaust was cracked and at some point that changed into an exhaust leak.
I bought Mikes Commando system.
After that it was really lean. Really hard to start. No power.
I stepped the pilot jets up and ended up at a 50 to get it to start decently. I can get it to start on the 47.5 with 5 turns or lower with a little bit of gas. That's pretty crazy right?
So I was up 2 mains too. It ran okay. Seemed lean up top. Stumbles under hard acceleration above 3.5k
Valves were fine.
Right hand plug: Silverish electrode with a tiny blackish on the circle.
Left hand plug: brownish electrode with really sooty circle
Now... a while back I had the cam chain guide go out, so I thought I'd try my spare motor. I've got that going... but it's the same. Super sooty on the left and needs to be jetted really big.
I pulled the carbs this weekend and cleaned them really well, set the float heights, got them synced up using a the yard stick manometer. Runs exactly the same. Stumbles over 3.5k. Still sooty on the left.
I had checked for leaks at the boots and didn't find any.
So question is... why do I have to jet so high? Not normal, right? Think it's an air leak on the right?
I bought Mikes Commando system.
After that it was really lean. Really hard to start. No power.
I stepped the pilot jets up and ended up at a 50 to get it to start decently. I can get it to start on the 47.5 with 5 turns or lower with a little bit of gas. That's pretty crazy right?
So I was up 2 mains too. It ran okay. Seemed lean up top. Stumbles under hard acceleration above 3.5k
Valves were fine.
Right hand plug: Silverish electrode with a tiny blackish on the circle.
Left hand plug: brownish electrode with really sooty circle
Now... a while back I had the cam chain guide go out, so I thought I'd try my spare motor. I've got that going... but it's the same. Super sooty on the left and needs to be jetted really big.
I pulled the carbs this weekend and cleaned them really well, set the float heights, got them synced up using a the yard stick manometer. Runs exactly the same. Stumbles over 3.5k. Still sooty on the left.
I had checked for leaks at the boots and didn't find any.
So question is... why do I have to jet so high? Not normal, right? Think it's an air leak on the right?