I took my pred to the dunes this weekend and had some problems. She started fine,and would rev fine, but when I'd open up the throttle in gear it'd pop and backfire. My friend said that when it did it, it'd puff out black smoke too. It didn't matter what gear I was in, anytime I'd get the...

I have a question about the safety switch on the throttle- how do I disconnect/go around it? I have to have my thumb on the throttle at all times or it kills the engine. I like to start the bike and put on my helmet, etc while it's warming up- kind of hard to do with one hand on the throttle...

I have my motor apart so I can do the HPD 558. I went through 40 pages here so far trying to find out timing marks and torque specs for the head and cams. Does anyone have pics of the marks or tell me a quick how too. Any torque specs also?

Have any of you guys found out how to install a togle switch on the bike so when you loose your key you can flip the switch to ride? I'm a manufacturing engineer and know that it will take a five position (prong) switch, one for each wire running to the stock keyed switch, but don't know where...

I couldn't bleed my rear brakes, even with a new Master Cylinder and everything on it. I bought the Master Cyclinder, etc. from the guys at Precision-Aircraft, makers of the Ridgerunner Buggies....they gave me a tip to bleeding the rear brake.... This is only the foot brake I am talking about...