Question about Honda CB 350 F0 Motorcycles

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1975 honda cb360t both sprakplug are fiering but

1975 honda cb360t i put new sparkplug in and new points and condencer and stared the engine it runs both set of points are fiering and both spark pluges are fiering but as it woms up the left exsost pip gets hot and the right exhaust pip does not.

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It appears one carb is running richer than the other, the rich side being the cool side,take off gas tank, on lean carb, unscrew top of carb where cable goes in,lift it out,the slide will have brass tapered on bottom,ther should be a c-clip holding the pin in the slide,ther is notches in the brass pin to adjust it up/dn in the slide, it needs to go up one notch in the slide, try that and adjust as nessary, luck

Posted on Feb 01, 2010

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Can you feel exhaust coming out both pipes? blockage, or valves. Once, I used a piece of gasket material to make a gasket, just cut out the shape and put the holes in it for the bolts, assembled, the exhaust didn't sound right, realized I forgot to cut the big hole in the middle. stupid. Valves would indicate because you probably wouldn't have a nice running engine.
is one louder than the other? you might have a leak at the head so you aren't gettin the same heat transfer.

Posted on Feb 01, 2010

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I worked on a bunch of these bikes back when they were new and I was working at Mathews Honda in D.M. Iowa. Bear in mind that was 30 years ago. IF I recall correctly. . . . .

First, the points only open and close. Other than that they don't move. The points are adjusted for gap by being moved L and R then locking down in place with a screw.
Assuming you have a good set of points, set the point gaps to 15 thousandths. The timing is set by rotating the base plate the points are mounted on. Behind the plate is a centrifical advance. Get an inductive pickup timing light and hook it up to the battery. Hook the pick up on the left sparkplug wire.
Start the motor and point the light at the top of the gearbox flywheel. Yes, with the cover removed some oil will spit out. This is normal. Rev the bike and you will see the timing marks. You will also see a static timing mark on the casing. Rotate the points base plate to line up the marks. When you let off the gas the flywheel marks should move counter clockwise. If they don't, then remove the points cover and free up the centrifical advance mechanism. You just timed the engine.

The photo will not open in "FixYa". Email it to me at tombones49@gmail.com. Would you like to know how to synchronize and balance the carbs?
Include your phone number in the email.

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