I have a blind hole puller set for removing bearings. They work excellent on the brake caliper pistons. No mess. No air pressure danger.
Great tool. Have done many caliper overhauls this way. Can see pictures on Amazon for the set. Just another way.

I have had excellent results with electrolysis. Have used this process to clean other parts to bare metal. Requires a battery and a battery charger. No mixing of coating product, no shaking or turning, tank stays in place, safe(tank is full of water solution) and is cheap. The internet provides adeq...

the fuel pump does not have the pressure(about 2 lbs) as do the pistons in their operation. the fuel pump keeps the float chamber full in the carbs only. the fuel is vaporized in the carbs and the excess that is not burned is forced by the bad guides, the other is exhausted as unburned and appears a...

I have found that worn valve guides will let fuel into the oil. not sure as to the amount. Before I made this discovery I sync'ed the carbs and it ran OK. But there was smoke from the exhaust. Check that the spark plugs are actually firing as this might cause the knock sound. I have replaced the hea...

My 93 GL1500 SE had the same symptoms.There was a gas odor when I parked the bike in the garage. This progressively got worse. I changed the fuel filter and rebuilt the fuel shut off, this did not work. This went on for about 3 years, until I had symptoms as you describe. I bit the bullet and pulled...