A reader wants to replace his vaccum fuel petcock for a gravity-style petcock without replacing the tank.
A reader asks Keith Fellenstein his thoughts on reducing the oil mix ratio on the Autolube oil system.
A couple of readers inform Keith of places that offer cylinder services for Hondas.
A reader asks Keith for advice on repairing the master cylinder on his Honda CBX.
A reader is having trouble with fouling plugs on his Triumph Thunderbird 6T and turns to Keith for help.
A reader wants his 1973 Honda CL350 to get fewer revs at speed and needs to choose between sprockets.
A reader has trouble kickstarting his Yamaha XS650, which has no trouble starting on the button.
We install new clutch plates on a Norton Commando 850.
Although clutch hub compressor tools are reasonably priced, you can easily make one yourself at a minimal cost.
Mikuni BDST flat slide carbs are easy to rebuild, and parts are readily available, if you know where to look.
A reader has been experiencing carb problems with his 1974 Honda CB550 and has a battery charger question.
We rebuild a set of Bing carburetors off a 1973 BMW R75/5.
A reader's 1968 BSA A65 is leaking oil and he wants to know the best way of annealing the copper head gasket.
A reader seeks help with his 1967 Triumph Bonneville running rough.
Keith tries to help a reader whose early 1980s Yamaha SR500 has a hard time starting.
A reader asks Keith how long the engine for his 1984 Yamaha FJ1100 will last before a complete engine rebuild.
A reader's Norton Commando Roadster is in excellent condition except the left cylinder, which doesn't fire regularly at idle.
A reader seeks help in finding a rear brake master cylinder for his 1983 Kawasaki GPz750.
Keith Fellenstein advises a reader who wants to re-cork his old Ewarts gas taps.
A reader's 1980 Yamaha XS850 SG runs fine until it warms up. Keith Fellenstein offers a few possibilities into why this is happening.
We go through the often-neglected process of adjusting the valves on a 1977 Suzuki GS750.
A reader thinks the cylinders on his 1968 Honda CL450 are out of round and seeks help.
A reader got his T100 Triumph running, but the left side cylinder smokes badly.
Keith Fellenstein tries to help a reader whose 1988 Suzuki Cavalcade spits back through the carburetors.
A reader's Hodaka Wombat has difficulty going faster than 35 mph.
A reader needs information on what could be causing fouling spark plugs on his Bajaj Caliber.
A reader seeks help with his 1978 Triumph T140E, which has timing issues.
A reader suspects a burned valve on his 1972 Triumph T100, which has no power.
A reader seeks help with his Yamaha YR2C, which has a clutch that's heavy to operate.
A reader's 1988 BMW R100RT has been sitting for years and won't run after the choke is turned off.
The primary chain, hidden behind the primary cover, plays an important role in your powertrain and will need to be replaced eventually.
Keith Fellenstein attempts to help a reader trying to set the points on his Triumph T140 Bonneville engine.
Keith Fellenstein explains what might be causing a fouled spark plug for a Yamaha XT500.
Keith Fellenstein offers an explanation as to why a reader's bike is jumping out of gear.
We'll show you how we cleaned our project Honda CB350's Keihin CV carburetors.
Motorcycle Classics’ tech expert Keith Fellenstein explains why a Norton 850 Commando might have a stiff clutch.
Give your clutch the attention it deserves by replacing the clutch plates.
Motorcycle Classics’ tech expert Keith Fellenstein discusses different methods of synchronizing carburetors.
Motorcycle Classics’ tech expert Keith Fellenstein offers advice on how to remove odd nuts and fused piston rings on a Triumph Trident engine.
Motorcycle Classics’ tech expert Keith Fellenstein talks about cleaning Honda GL500 carburetors.
Other than checking compression, carburetion and ignition, the most important test to run on a 2-stroke engine is a leak-down test.
If you can confidently tune your bike, you can probably handle synchronizing carburetors.
It won't take much time or money to complete an old airhead engine tune-up.
A crankshaft replacement on our Yamaha RD350 was overdue, but fortunately it was not as expensive or difficult as you might think.
BMW /5 valve adjustment is very straightforward and easily within reach of the novice mechanic.
Motorcycle Classics’ tech expert Keith Fellenstein addresses the possibility of a lean idle mixture from the carburetor of a 1969 B44 BSA 441 Shooting Star.
Motorcycle Classics’ tech expert Keith Fellenstein discusses timing a cylinder for a 1970 Yamaha XS650.
Motorcycle Classics’ tech expert Keith Fellenstein discusses clutch problems on a 1975 Kawasaki H1 500.
Motorcycle Classics’ tech expert Keith Fellenstein discusses a potential compression issue on a 1965 Triumph Bonneville T120.
New stuff for old bikes: Set of pliers for master link clips from Motion Pro.
Learn how to replace camshaft bearing blocks on Honda CBs.
Motorcycle Classics’ tech expert Keith Fellenstein helps solve an issue with carburetor floats on a Honda CB1100F.
Motorcycle Classics’ tech expert Keith Fellenstein gives advice on setting the fuel/air mixture screw on a Mikuni carburetor.
Motorcycle Classics’ tech expert Keith Fellenstein troubleshoots hard-to-start 1985 Suzuki Madura V4s.
Motorcycle Classics’ tech expert Keith Fellenstein discusses fixes for a hard to kickstart 1976 Triumph 750.
Motorcycle Classics’ tech expert Keith Fellenstein shares torque specs for a 1973 Kawasaki F7-B 175.
Tips for polishing an aluminum engine block on a BMW R75/7.
MC Tech Corner expert Keith Fellenstein gives a reader advice on starting a 1963 BMW R69S in cold weather.