Rob
Hero member
- Location
- Midlands, UK
Can anyone explain how to positively check for a blocked pilot jet / drilling? One of the bank of three doesn't respond to alterations to the pilot mixture air screw and I've done the usual squirting of carb cleaner / airline on all three to find no difference between them. The air screw has its tapered tip intact. Just wondering if I've missed something. The Dellorto check below is pretty straightforward and I wondered if there is something similar for the Miks?
The easy way to check the progression galleries with carbs built and on the bike is -----remove pilot jets and mixture screws-----open throttle----use a can of carb cleaner with extension tube fitted -------put the tube up the hole where the pilot jet goes cover the mixture screw hole with finger and squirt cleaner while looking for a stream coming up into the venturi. just in front of the back edge of te slide.
Then put the tube in the mixture screw hole cover the pilot jet hole with finger and squirt cleaner whilst looking for a stream coming out between the slide and the engine.
Then put the tube into the little air hole under the carb intake (not the "middle" one----the other drilling)----squirt and look for cleaner in venturi.
The easy way to check the progression galleries with carbs built and on the bike is -----remove pilot jets and mixture screws-----open throttle----use a can of carb cleaner with extension tube fitted -------put the tube up the hole where the pilot jet goes cover the mixture screw hole with finger and squirt cleaner while looking for a stream coming up into the venturi. just in front of the back edge of te slide.
Then put the tube in the mixture screw hole cover the pilot jet hole with finger and squirt cleaner whilst looking for a stream coming out between the slide and the engine.
Then put the tube into the little air hole under the carb intake (not the "middle" one----the other drilling)----squirt and look for cleaner in venturi.
