Vintage and Classic Hondas
Login  Register

78 cb750f just started running rough

classic Classic list List threaded Threaded
♦
♦
 6 messages Options Options
 
Embed post
Permalink
Rockwork
Reply | Threaded
Open this post in threaded view
♦
♦
| More
Print post
Permalink
May 07, 2016; 1:02am

78 cb750f just started running rough

Rockwork
106 posts
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
Reply | Threaded
Open this post in threaded view
♦
♦
| More
Print post
Permalink
May 07, 2016; 3:53am

Re: 78 cb750f just started running rough

TOOLS1
Administrator
10170 posts
Did the bike get wet? Could you have gotten some bad gas?
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

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
Reply | Threaded
Open this post in threaded view
♦
♦
| More
Print post
Permalink
May 07, 2016; 4:28am

Re: 78 cb750f just started running rough

Rockwork
106 posts
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
Reply | Threaded
Open this post in threaded view
♦
♦
| More
Print post
Permalink
May 07, 2016; 4:58am

Re: 78 cb750f just started running rough

TOOLS1
Administrator
10170 posts
Check the points and condensers.
TOOLS
Life is not about the number of breaths, you take, but the moments that take your breath away.
I don't have an anger problem. I have an idiot problem. Hank Hill
Never confuse education for intelligence.
Happiness is a belt fed weapon.
I just can't imagine what could go wrong.
No fire? No explosions? So whats the point of your story?
Those who are too smart to engage in politics are punished by being governed by those who are dumber. ~Plato
It couldn't be done, but the darn fool didn't know it, and did it anyway.
We all got problems. Ksharp
I like vintage bikes because they take me away from the clutter of technology that I work with everyday and back to a simpler time of mechanical elegance and simplicity.. "ninadm"
Darkwing Duck: The worst part of public transportation is the Public.
"That is awesome shit there" Re-Run
"Fear nothing, attack everything" Eric Berry
" Oh, you read that on the internet? Clearly it IS a massive problem. Of course it CAN’t be normal operation."

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
Reply | Threaded
Open this post in threaded view
♦
♦
| More
Print post
Permalink
May 08, 2016; 10:27pm

Re: 78 cb750f just started running rough

Rockwork
106 posts
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
Reply | Threaded
Open this post in threaded view
♦
♦
| More
Print post
Permalink
May 09, 2016; 3:13pm

Re: 78 cb750f just started running rough

Re-run
Administrator
3494 posts
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!
Free forum by Nabble Disable Popup Ads | Edit this page