Replacing everything in the sparkplug circuit (wires, caps and plugs) will cost less than $20 per bike. It's the least expensive repair insurance you...

Congrats on the carb fix. 1971 /5's had gauges marked in English/American units

Based on the above, what is the most likely cause - diaphragms, main jet, or needle? JB - The most likely cause is hidden in the answer to my quest...

You either have an blockage inside the air filtration track, or a fuel metering issue. Without answers to the 5 questions I posed to you 12 days ago, ...

My thoughts exactly. Except I was sure it was called the Pulse Injection System, which would only mean you've been PISed on. 👿

• I believe there is a standardized battery shape that is close to that of the BMW called a U1. Unfortunately, the terminals of the U1 are reversed fr...

Your HL bulb could be the problem. It was very common in the 80's and 90's to replace the stock 65W HL bulb with 80W, 100W and even larger bulbs. Back...

The petcock behavior and the leaking carb may be related. Ethanol attacks the older fuel tubing. It causes the tubing to crack on the inside send sma...

• Scot is correct. The needles wear against the needle jet and slowly enrich the mixture. I highly suggest new pairs on both sides. • If your Bing...

Sorry that you're having computer issues. Sometimes we are called to "Moderate" files before they can be posted. That is not the case in this instance...

Welcome Aboard ! • Someone else will need to address the circlip. And here I expect you are referring to the missing circlip in the gearbox which w...

• On some models, the Rectifier Assy is mounted on 4 rubber isolation mounts. It is best policy to replace the rubber pieces with 4 aluminum standoffs...

Some questions. Help will continue as long as you answer every question. • Question Number 1: Were the plugs being blackened BEFORE you started thi...

ARRRRRRRGH! While we generally try to encourage our fellow Airhead owners as much as possible on this board, I feel it my duty to point out that Na...

On a car they call it the Exhaust Gas Re-circulation port, or EGR. BMW may have another name. A small sample of the hot exhaust gas is shot back into ...