The last few times I've ran my buggy, I get ready to blast it with air when I started to notice grease type liquid when looking through the bottom of the chassis into the flywheel, it's only on the engine casing and I'm amazing it hasnt made itself into the clutch shoes. I guess the flywheel blocks any splatter from hitting the shoes. Anyways what could this be? Do I need to replace the main bearings? It's not much , but I'm being cautious cause I just broke it in last week.

One more thing, I pulled the car into the pits today to make a steering adjustment and struggled to get the car to fire, I traced the problem to the carb, where I could hear and see fuel boiling and bubbling, causing air to push the fuel back into the tank. On my fuel tank cap there is a swivel type thing where you plug in the exhaust line that had visible moisture, just a little bit. So I unplugged my pipe and blew through it to try and force fuel into the carb, there is a definate air leak in the section I meantioned. Could this be the cause of the hot fuel? Temps seem to be erradic, it'll run perfect with temps at around 220-230, then jump to 260-270 even when idling.

It could be that you are running to lean on the bottom end and once your idling the fuel is vaporizing??? I put a question mark there because it seems odd to have any kind of bubbling or to be able to hear noise when the engine is running. When you run an engine too lean it becomes hard to start when its hot. I would say richen up both needles at least a quarter turn if not more and get it warmed up and tune it from scratch.

As far as the moisture in the pressure line, that is normal and its unburnt fuel/oil being pushed back to the tank. That line is what pushes the fuel from the tank to the carb when the engine is running by exhaust pressure.

As for your main bearing, you would only need to replace the front where the leak is. The rear isnt a cause of that. The problem is when you run overly rich for too long, like when you break the engine in, the fuel/oil pushes its way through the bearing. Also, when you shut the engine down you should burn off everything thats in the tank and lines running it out of fuel and trying to restart it a few times to burn off as much as you can thats left over in the engine.

thanks, appreciate your help with this and other issues I've had in the past. The bubbling/boiling is with the car off. I had a feeling my bottom was too lean, I'm gonna start with that, thanks.

Also, the moisture discussed in the exhaust line is not in the tubing , but on the tank cap itself, the cap is is made up of two parts, the top section swivels allowing you to change the direction of the inlet. That section is not air tight, I have two brand new tanks that are airtight but im just curious to know how this would affect things.