TTR 225 White Smoke

Hey guys,

New to the forum. I just got two TTR 225s for free. They were not in the best of condition but easy fixes cosmetically. One is running great after going through the carb and adjusting the valves.

The other, not so much.

I have tow major problems.

#1. The accelerator pump cover (black plastic piece) on the card is broken. Apparently it is the only part that you cannot buy separately from Yamaha, CycleParts, ebay or any other site on the web. It looks like I will have to buy the whole carb unless one of you great guys knows one that will work, and I can find it on ebay or craigslist.

#2. Using the carb from the other bike, I have a wicked amount of white smoke come out of the pipe when it first starts and at mid range rpms. Once its warm it does not smoke at idle, only when you roll on it.

I did a compression test and read around 120psi. This is way below the minimum that is in the technical manual.

I'm about off pull the head off. What should I be looking for??

I'm thinking it is the rings, but going to check the valve seats as well.

What do you guys think???

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