I've spent the last hour trying to get the carbs of the viffer. I can't see whats holding the feckers.. I've loosened off the clamps around the rubbers but the things won't budge.

Does anyone have any ideas or tips for getting carbs off. Moral support will also be gratefully accepted.

The other things is, 'Do I want to get them off'. If it this much hassle getting them off and I'm using brute force and ignorance, what it going to be like, when I try to get the feckers back on.  :cry:

Why exactly do you want to take them off?

MORAL SUPPORT:-   Ya doin a good job!!---I think!

Why do you want the carbs off Davie?
if you have to take them off, try hot water on the rubber manifolds, might help.I have heard they are a bugger to get off, I still think its more electrical myself.
moral support, you're doing a great job m8.

did you check the coils and ht circuit.

I got the carbs off with a bit of help from Norrie. Floats and jets have been checked and found to be okay. So that another problem ruled out.

I've still to check the coils, which is a lot easier than the carbs. Because it had been sitting for so long waiting for the exhaust to get fixed. We thought there might have been some gunk in the carbs. Which is why they were stripped. The electrical stuff, I can do myself (hopefully). Round two will be tomorrow. If the weather is half decent, I'll get out and check some more stuff but so far, I haven't got a clue about whats wrong with it.

what's it doing exactly?
I've a m8 here whoe strips older bikes and renovates em.
he might have some idea.
pity he won't come on the forum but he hasn't got a pc.

Davey, remind us what the problem is?

I had a V8 Rover that couldn't pass a fecking milt float... been stood for a couple of months and the fuel filters were all gooed up... cleaned 'em out and it ran like the tank it truly was

T'was overheating though wasn't it? That points to timing imho, as if the bangy thing in the cylinder isn't popping at the right time a lot of the energy is wasted (it's usually too far advanced... or retarded ) and generates extra warmth... which is nice.

You're doing a splendid job... well, making me laugh anyhoo...











... although I speak to you now as a bikeless person as I still haven't had the Bandy back with the new tyre fitted 'cos it's raining and I don't like the bike getting wet

What's happening is this.

There are small vibrations coming through the bars, which weren't there before. As anyone who has own a vfr will tell you, they don't do vibs.

It goes okay on higher revs but feel hesitant. It’s as if you riding into a strong wind all the time.

It also gets a bit lumpy at low revs. There were a couple of roundabouts down south, were I thought it was going to stall on me as I rode around at full tilt. Its not nice thinking your bikes gonna stall mid corner. That’s highside material

If you are sitting a lights, the temp gauge does start to rise rapidly. When temp goes up, it get worse.

Does south prolonged riding on motorways and A-roads was okay but as soon as we entered a village or town, the problems returned.

Confused of Jockland.  :sniffle:

Dave,

Have you balanced the carbs and had the mixture checked?

Carbs out of sync will cause lumpy tickover and poor(er)
throttle response.  Too lean a mixture will cause overheating,
I believe.

B.

Not yet Barra, I know a bloke with a set of gauges. I'm trying to get him to give me a hand to balance the buggers. It does sound as if carb balancing would help.

does it feel like it's only running on 3 cylinders?
kinda choppy like?
it could be summat a s stupid as a spark plug with a cracked insulator.
or maybe wrongly gapped if a plug is gapped too large it'll run like a headfull of snot at low revs but sort itself out at high.
Just a thought mind.









you're still doing a sterling job though

Thank you, the morale suppport is coming along nicely.  :laughcont:

I know it's a rather different kind of Honda, but it does sound a bit like the problem i had with my old SuperDream when the valve gaps were wrong...............


But you're doing a grand job!


(Didja get the carbs back on ok?)

Have one on me old man... May not help fix the bike but you'll feel a good deal better about it

BG, I managed to get the carbs back on easily enough. The bit that caused the hassle, was the metal that fits on top of the carbs and holds the airbox. I'm going to have a look at the valves. Hopefully today. I did get a chance yesterday cos it was lashing down.

BW, thanks I need that.  :bowdown:

I checked the plug yesterday andthen put it all back together again and it seems to be running a bit better.  :Oo: And that with me replacing feck all. I'll need to take it for a decent run to see how it goes though. Surely it wasn't just and ht lead that wasn't on right.  :O

coulda been dave you never know i bet you'll be kicking yourself if it was though!

Forget it, I took it out tonight and it ran like a bag of spanners.  :sniffle:

Did you clean out the carbs when you took them off?
I still think its electrical myself-something stupid like the charging system-although that wouldnt explain the temp rising rapidly as we entered slow moving traffic.
I once had a 750 honda that ran rough at low rpm-turned out to be a dodgy connection at the rectifier, battery would lose its charge & run rough, like on 3 cyls, but when you picked up speed it ran ok-it was an intermittent fault that drove me up the bloody wall, cos everytime i went near it with a multi-meter it was ok.
i think you're just gonna have to be methodical Davie, & work through everything, electrics, cooling system, timing/valves.
but hey you're doing a great job-wish you were my mechanic

I could have been a mechanic, you should see the mess I've made of the timing cover, while trying to get it off.  :cool:  :blush:

I think I'll need to get a new one.


Guess what plonker over tightened it the last time.  :angel:

(moral support kicks in)Ah well BD, if you hadnt overtightened it, it may have worked loose & caused a nasty accident

I'll need to buy a new cover.  :verysad: You know what us Scotsmen are like with money.  :cry:

Hi Dave,

Don't go spending any money!!! Can't you craft a new
cover out of a Tennant's Lager Can? (empty it first!)

Here's one you can try.


Keep up the good work.

The Tennent's Larger burds. I miss them.  :love:  :love:  :love:

Yeah, ok I know this like really a old post but couldnt resist asking if the problem
was sorted, judging by the faults listed it sounded like a fuel starvation issue
like a blockage at the tank tap or something, just curious to know what the outcome was.

Cheers

See, it pays to read ALL the old stuff, makes for intersting reading
Im a macky by trade but honestly I had nothing to do with the space shuttle.

I didn't find a cure but it does run better. It still runs rough occasionally though and it did run better when the plugs were replaced but it seemed to return to it's not quite right self after a few hundred miles.

Something I forgot to mention in my reply was to ask if your bikes fuel tanks
tap system works on a vucuum system like a GS850 that I once owned, I had
a simalar hassle with it now that I recall and it was the valve that was gunged up
but I exsperienced more of a surging sensation that a diving problem as you say.

Still sounds like a fuel problem as a electrical problem would have worsened by
now, HT leads can do the same effect as you mentioned its more so when its
warmed up, have you tried looking for sparks at night (must be real dark).
sometimes a following spark can hide its self real well and that goes for a suspect
coil pack, have you removed the screws/bolts that secure the coils to the frame
and sanded the steel sections to make sure for correct connection as it may be
a bad return to coil, could you tell me what bike you have,
not sure what a 'viffer' is.

I love these sort of things that are fiddly and annoying and I always keep a calm
head (very important).

Cheers

Honda VFR750FJ


I'll give it a bash. I'm off on holiday next week, so I'll try and get it done then.

So your holiday is this week, well its the end to be honest...... manage to do any
thing about your bike.......

Cheers

don't talk to me about honda's running rough, mines run like a bag of spanners for ages now. although i have to say i can whip of the carbs clean em and put em back on in ½ an hour now

Nah! I ended up decorating. I'll hoping to get out for a run tomorrow. I'll get around to it but I need to get out for a decent run.