Cleaner = slower?!

Kilo P /
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Ok, I'm a little stumped by this...

I took it upon myself to clean my engine on my Grande and get it ready for some new parts that are on the way.

After the cleaning it runs slower. Much slower. About 5mph slower.

However, it started running slower when I did a test with a new jet. At that time I figured I was just running rich.

Here's what I did in the cleaning (carb is already clean):

I cleaned off my head. Got the gunk off and out. There was a little bit of carbon buildup near the plug, but it came off pretty easily.

Took off some of the carbon on the top of my piston.

And I cleaned out my exhaust port. Just the little tube that my exhaust connects to. I cleaned it out with a wire brush.

Couldn't find any air-leaks but I could be mistaken. I didn't have a gasket from the head to the cylinder and I put the decompression rod back together pretty tight.

So, I don't get it. How can I be running slower? It runs smoother now, but there's not nearly the power, acceleration or speed that I had before I cleaned it. Could it be that I really lowered the compression that much?

What to do!

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