Author Topic: 81 cb650f bogs down while riding up any sort of incline... (Read 4780 times)

Soos · « **Reply #25 on:** April 17, 2008, 06:42:08 AM »

I'm guessing he is miffed at me?

l8r

heffay · « **Reply #26 on:** April 17, 2008, 06:51:18 AM »

i don't see why soos...

anyway... so, w/ all the different replies for possible cures...

i've decided to just rebuild the entire bike on sunday.

Soos · « **Reply #27 on:** April 17, 2008, 06:58:52 AM »

http://forums.sohc4.net/index.php?topic=31770.15

I think I offended him in this post.

l8r

78 k550 · « **Reply #28 on:** April 17, 2008, 08:35:14 PM »

Hey I'm in on this.

I might have a list for my Wing, while at this little gathering.

I say we start with the valves and go from there.

Paul

78 k550 · « **Reply #29 on:** April 17, 2008, 08:40:19 PM »

Quote from: Gordon on April 15, 2008, 01:29:06 PM

Quote from: heffay on April 15, 2008, 11:27:42 AM
yea... thanks guys... i'll be working on the bike this weekend.

gordon? wanna come help too?

I might be able to stop by after work.

And tell Mad Dog to sign up on this website for himself, already!

He is on here just can't remember his info. he was username Maddog.

It run's very smooth at idle. Has good power at low speeds.
I haven't been able to check much out to the engine. It was making a racket and found a bum chain and the front sprocket bots almost out hitting the case. I got him safe to ride and just need to figure out the bogging.
Could just be a bad gas cap not venting.

Paul

Gordon · « **Reply #30 on:** April 17, 2008, 08:51:49 PM »

Quote from: 78 k550 on April 17, 2008, 08:40:19 PM

Could just be a bad gas cap not venting.

Paul

I don't know. Venting gas is one thing I don't think Mad Dog has any problem with!

78 k550 · « **Reply #31 on:** April 17, 2008, 08:53:19 PM »

Terry,

We can swing by on the way up .

Paul

heffay · « **Reply #32 on:** April 18, 2008, 07:48:13 AM »

no problem terry... come on up w/ the others if you like... we'll teach you everything you need to know

just razzin'
wouldn't mind meeting you for real this time anyway... the one meeting to hand off patches just wasn't right, ya know?

paul... tell maddog not to forget my steak! we do have some spicy dogs left to grill from saturday so we should have plenty to eat... who's got the beer?

cb650 · « **Reply #33 on:** April 19, 2008, 06:06:57 AM »

That has been awhile too Heffay. Paul sent you a pm with my cell #. I'll be on my 650 so we can swap parts if needed. Wont need bug spray though as its smoking.

Gordon · « **Reply #34 on:** April 19, 2008, 07:20:06 AM »

I'll be up there whenever I get off work. Probably sometime after 3pm, and I'll bring some beer.

heffay · « **Reply #35 on:** April 19, 2008, 09:46:51 AM »

Quote from: Gordon on April 19, 2008, 07:20:06 AM

I'll be up there whenever I get off work. Probably sometime after 3pm, and I'll bring some beer.

G... just making sure your calendar doesn't say sunday today.

missed you last night... breastfeeding duties we all assumed.

Gordon · « **Reply #36 on:** April 19, 2008, 10:24:45 AM »

Quote from: heffay on April 19, 2008, 09:46:51 AM

G... just making sure your calendar doesn't say sunday today.

If this was happening today I wouldn't be joining in the fun, since I'm going to work at 4am tomorrow. You can bet I'll be nice and chipper, too, when I show up at your place after very little sleep and a ten hour work day.

Happy 4:20!!!!!

heffay · « **Reply #37 on:** April 19, 2008, 10:48:10 AM »

Quote from: Gordon on April 19, 2008, 10:24:45 AM

Quote from: heffay on April 19, 2008, 09:46:51 AM

G... just making sure your calendar doesn't say sunday today.

If this was happening today I wouldn't be joining in the fun, since I'm going to work at 4am tomorrow. You can bet I'll be nice and chipper, too, when I show up at your place after very little sleep and a ten hour work day.

Happy 4:20!!!!!

so, why do you work at that hippy place again?
hippies don't get up at 3am!

78 k550 · « **Reply #38 on:** April 21, 2008, 10:34:09 AM »

Just got off the phone with Mark. It was running crappy about half way home. Didn't want to mess with it so we took out the filter and see how it would be on his way to work today.
He said little after on the highway it all of a sudden was a new bike.
He is very happy.

Must of been when the tank got flipped and some sediment got moved around. Maybe my guess or just plan old bad gas.

Paul

78 k550 · « **Reply #39 on:** April 21, 2008, 12:05:42 PM »

Mark changed it befrore the ride up and said not much different. Terry changed fuel caps the last few miles of the trip that wasnt it. all valves where really close or within spec. fuel tank got flipped over for a min as an inspection was being done. Maybe it was just crap settled into the petcock filter or something.

Paul

heffay · « **Reply #40 on:** April 21, 2008, 04:59:43 PM »

Quote from: 78 k550 on April 21, 2008, 12:05:42 PM

all valves where really close or within spec.

no they weren't!
there was no play on a number of them.

i think we should re-jet it... seems to need to breath more considering the air filter cover "mod". (meaning deletion)
it ran even better before a new filter was put back on.

we also changed the plugs. they were sooty, for the most part

the bike ran amazingly well in town... i never got over 30 though.

so... is it an A+ in maddog's book now or do we need to make some finishing touches?

78 k550 · « **Reply #41 on:** April 21, 2008, 05:06:03 PM »

opps sorry tight will not let them open enough to breath well huh. I forgot about those. sorry for not adding that in or the plugs.

Paul

heffay · « **Reply #42 on:** April 21, 2008, 05:14:24 PM »

paul... don't admit... just say you didn't check all of the valves, personally.

so, runs better? or just back the way it was before jerry dumped gas all over my pristine garage carpet?!

Jerry Rxman Griffin aka MuthaF'er · « **Reply #43 on:** April 21, 2008, 06:16:36 PM »

OK, so it is/was running rich. I tried an old trick to help lean it out some by removing a few drops of gas considering the gas cap musta had a leaky seal

Besides, I think those few drops of gasoline mighta actually cleaned that pristine carpet.

It was running rich WITHOUT an air cleaner AND going from sea level to 5000 ft. I'd start by lowering the mains 1 size for the altitude and another size for installing an air cleaner which really needs to be done. Performance and mileage will improve.

Does the 650 with CV carbs use the same jets as a 750? Paul, why don't you and Mad Dog drop a float bowl and check out the size of the mains and report back?! We ain't stopping at no stinkin valve adjustment!

Soos · « **Reply #44 on:** April 21, 2008, 11:52:35 PM »

Yes the CV carbs on cb650's use the same main jets as a 750.

l8r

News:

Author Topic: 81 cb650f bogs down while riding up any sort of incline... (Read 4780 times)