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78 cb750f just started running rough

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Rockwork

78 cb750f just started running rough

Any clues why my engine just started running rough? I recently got it back out of hibernation for the season, and it's been running great. When I road into work this morning everything ran smooth as normal. But when I started it up to go home, it ran noticeably rough, which I figured might be because it was could. But it never cleared up, and without throttle it stalled. It felt like one of the plugs might not be firing, but when I pulled the wires off them 1-by-1, they equally caused the engine to stall out.

Thank you for any ideas.

"To strive, to seek, to find, and not to yield."

TOOLS1

Re: 78 cb750f just started running rough

Administrator

Did the bike get wet? Could you have gotten some bad gas?
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1976 CB 750-A X 2
1977 CB 750-A X 4
1977 CB 750-K
1976 CB 750 F
1981 CB 750
1966 Kawasaki SG 250
1981 KZ 750 LTD
1973 CB 350
1979 CM 185 Twinstar
1982 Honda XL 80
South of Eden (Kansas City MO)

Rockwork

Re: 78 cb750f just started running rough

Hasn't gotten unusually wet. Because I recently got it out of hibernation, I poured a can of Sea Foam in last fill-up, which has been mostly city driving since.

"To strive, to seek, to find, and not to yield."

TOOLS1

Re: 78 cb750f just started running rough

Administrator

Check the points and condensers.
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Rockwork

Re: 78 cb750f just started running rough

Might have been gas, because I filled it fresh then ran it hard. CB cleared its throat and started running as good as ever. Heading out this week from NYC to Pittsburgh. Glad its back to normal for the ride. Thank you for the help.

"To strive, to seek, to find, and not to yield."

Re-run

Re: 78 cb750f just started running rough

Administrator

I had that happen and yanking the choke and going wot seemed to flush out whatever grit was messing things up.

The ride IS the adventure. The destination is just to get gas!