stockxr

I have a 85 rz350 motorcycle for sale. I think the cranks seals are bad though.

Could the carb being out of sync cause these symptoms? Just a shoot in the dark.

Can you buy the exhaust and intake plugs or do half to make them?

Your right about the pilot lets. Even after putting the bike away dry they were still clogged. I cleaned the pilot and main jets with cleaner, a guitar string, and compressed air. I also cleaned the float bowl and carb body with a sonicare tooth brush. That thing worked bitchin! What's involved in performing a leak down test? I have never had to do one. Is there anything electrical that could cause this? Coil or CDI? The lights act normal. They don't go to full bright until 2-3K rpm like they should and there's no flickering of any kind. The battery is good and the charging system works.

The PV is working and adjusted properly. It self cleans when you turn the key on and opens around the right rpm. Choke tube is installed. I have the bike put together right and everything adjusted. The fuel appears to be flowing good. It will flow about 12oz in around 25 seconds. I also inspected the fuel level in the float bowls will the bike is running and its right. I hope it's not the crank seals. It is an old ass bike(23). Could that cause and air leak symptom like this?

Yeah it's not a banshee but it's close. I pulled my 85 rz350nc(9993 miles on the clock) out of storage and cannot get it to run right. This thing ran great a few years ago. It bogged and died on me within a 1/4 mile and would not restart. It is all stock except for possibly the reeds. Are the stock reeds metal? The bike starts on the first kick with the choke on when cold. It idles at 1200-1500 rpm for about a minute then the idle lowers a little like it wants the choke off. That seems normal to me. It all goes wrong when I turn the choke off. It seems to idle just fine for 15-30 seconds then the idle starts to creep up to 2000-3000 rpm. Also it does not rev out very clean. When I whack the throttle wide open it gets to around 9000 rpm, then cuts out and continues at 9000 rpm. It sounds lean. Maybe starving for fuel, or has an air leak. This is what I have done so far: new plugs(br8es) cleaned the air filter and checked the air box cleaned the carbs(twice) checked the float height(good) no gas in the floats checked the float bowl fuel level while running the engine(good) pilot screw is 1-1/2 turns out cleaned the fuel tank(found some particles) installed a fuel filter ran the bike with the gas cap and vent lines off(no change) replaced the carb joints(the originals were cracked,no change) replaced the reed block gasket(reeds are good, no change) If someone with banshee or rz knowledge could respond I would be grateful. I have worked on my own two stoke dirt bikes, so I am not a complete newb. This bike has me stumped. Thanks in advance, Chris