3G Runs rough!

[Damn Yankee]

Happy spring, everyone...well,sort of...


'95...plugs changed last season, I swap 'em them every other year.

1st start-up of the season, runs great.

Removed tank for some other work, changed gas out to fresh mid-grade.
Starts okay, but rolling out of the driveway, it runs erratically, in fit and jumps when I run through the gears.

Does not respond to the throttle AT ALL after I do get rolling. Idles rough. Had to limp home.

I'll try switching out gas again, but what else should I check?

Also: voltmeter at 3-K rpm reads 13.6...shop manual says it should be 14.0-15.5 Related?

thanks always
dy

[roboto65]

You took the tank off take it off again and check to see if you pinched the breather hose.    13.6 should be Ok also get a can of Seafoam and run it thru see if that helps..

[drkngas]

Also: voltmeter at 3-K rpm reads 13.6...shop manual says it should be 14.0-15.5 Related?

Probably not related.  I dont get above 14v till about 4k to 4.5k rpm.

[Damn Yankee]

Breather hose looks okay...also ran compressed air through just to be sure.
I'm going take a closer look at the petcock after work today.
Just strange it would act up this suddenly...

[hootmon]

How long did it sit???
Drain the carb bowls and see what comes out..

If you change your plugs every other year. You want to sell some of your used ones??
Mine have about 40K on them..

[tmds3]

Mine have about 40K on them..

Sounds like you change plugs like I do, If it aint broke, don't fix it

[hootmon]

Mine have about 40K on them..

Sounds like you change plugs like I do, If it aint broke, don't fix it

Well at $8 a plug or whatever Honda charges, your motto applies...
If they were $2 like a car spark plug, then they might get changed a little more often..

I was serious about buy used plugs.. Hey, if someone puts 8K miles on plugs and changes them, I can get some good use out of them still..

[Chad in Michigan]

I have a handful of used good plugs for you. some are the irridium plugs even. send me your address and i'll get them to you for shipping they really need a good cleaning on some of them as I flooded them once and couldn't get it to fire up right away and just changed plugs. if you can clean and gap them, they will work great for you

[tmds3]

Chad, I will take you up on the offer of plugs as I will need to change mine before I ride it, Been sitting for a year and have to go thru the carbs as well so I would clean them up and use them. Let me know what Hoot doesnt take and I will pm my address.

[Damn Yankee]

Well, I checked the fuel stop, nothing plugged there.
Same with the breather.
And the past couple runs around the neighborhood, it will run for a mile, then slowly lose power and finally stall. No re-start.
Experienced biker friend also suggested draining the bowls, see what's down there.
I'll read up on Greg's how-to, but having never done this before, how daunting a task will this be for someone who has yet to go beyond the level of changing brake pads?

[hootmon]

Well, I checked the fuel stop, nothing plugged there.
Same with the breather.
And the past couple runs around the neighborhood, it will run for a mile, then slowly lose power and finally stall. No re-start.
Experienced biker friend also suggested draining the bowls, see what's down there.
I'll read up on Greg's how-to, but having never done this before, how daunting a task will this be for someone who has yet to go beyond the level of changing brake pads?

Very easy.. You just have to find the four screws.. They are at the bottom of the each carb..
They can be a little tough to get to on some bikes.. Just loosen the screw a turn or so and fluid should flow out the little metal pipe nearby.. It's great if you can catch the fluid so you can see if there is water or trash in the fluid..
I posted a couple of picture somewhere.. Here they are again..



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[roboto65]

Something is not adding up just for kicks do you have an extra key ride the bike with the extra in the gas cap when it starts dying again open the cap if you here it hiss you found your problem if not I would check the hose running to the front right cylinder which provides vacumm for the gas valve !!!

[Damn Yankee]

Will do, all good suggestions. If it saves me from pulling carbs, I'm all for it. thanks always!

[Damn Yankee]

Well, after unsuccessfully trying to drain the floats, I decided heck with it, and just removed the carbs. Without breakage. Kudos to Greg and his write-up, patience carried the day. Can't wait to try to  put them back on!

Not having the aptitude for taking apart tiny, sensitive parts and trying to put them back together again, I brought the carb bank to a mechanic friend. He noticed --as I did earlier--black soot covering the bottom of carb #1 (left, lower IIRC). He said that would suggest blowback from the chamber, perhaps a bad piston ring...?

Not having the motor burn oil between changes...or blue smoke from the tailpipe..and with 37-K on the odometer...would you agree with that diagnosis, or is it something else ...and what are my options?

[hootmon]

My OPINION.. It would be valve, verses Rings, but I would doubt both...
I have over 70K on mine and it still runs like new. I was talking to a Honda Store guy and he said I should be good for another 125K or more.. From his lips to God's ears!!!
Clean the carbs good.. Do any shimming/jet work while you have it off.. Put her back together and go for a ride!!!