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Messages - veefour
1
« on: June 09, 2013, 07:49:09 PM »
Same ones in the tappet caps
Well done that man. Cheers  .
2
« on: June 09, 2013, 05:41:21 PM »
Does anyone know where I can get carb manifold O-rings if I need them, David Silver doesn't list them.
3
« on: June 07, 2013, 03:33:12 PM »
I am beginning to think I am never going to get to the bottom of this  I have just changed the coils for some different ones now & this persistent misfire is still there. So to recap, coils changed, new plugs & caps, points (timing done), valve clearances done, all new carb jets, floats height set, carbs balanced, compression test done all the same pressure. Engine starts on the button & revs cleanly with no smoke & all four pipes get hot, but on accelerating there is this persistent misfire. The No.1 cylinder plug is getting very sooted up so somehow it must be running rich but why !! (Not the plug as I have swapped them around). Before long it will be staying under the covers if I can't sort it soon  !!!!!!!!!!!
4
« on: May 16, 2013, 06:02:24 PM »
I have just noticed the Choke Flap on the Carb nearest the Choke Lever is not opening quite as much as the others. It's only slightly different but do they all have to line up by the same amount.
5
« on: May 02, 2013, 07:33:28 PM »
Well I still haven't got to the bottom of the problem. The bike starts on the button, it does need a bit of fiddling with the choke for a minute or so but then idles nicely at about 1200rpm. While stationary it revs cleanly & responsively. The thing is when riding it feels rather sluggish with a burbling misfire sound, but when opened up quickly & the revs reach about 5000 it takes off smoothly & surprisingly fast. Took it for a 30 mile run this morning & apart from this it runs well. Getting a bit peeved now, any more ideas on this please.
6
« on: March 20, 2013, 08:57:28 AM »
Braving the cold yesterday ( looks like we are going to put up with it for a while longer !! ) i decided to take the carbs off & check them all out again. After studying the manual ( again ) it states the needle clips should be in the 3rd / middle groove, now for some reason the original ones were in the 2nd groove ( from the top ) so this is how i had set the new ones. Would this have any effect on the poor running !
7
« on: March 06, 2013, 06:45:27 PM »
Next i'd check that you have no valve clearances that are too tight......followed by a compression check if you haven't already done that.
Just a quick check item to give you a lead.....start it from cold and run for about 10seconds then switch off......now carefully check the down pipes close to the head to see if you have any which are cold to indicate which cylinder could be giving you that missfire feeling.
I had previously checked valve clearances, & all the downpipes are getting hot. Will try a compression test next. see my old post "3 cyl 550" as i had similar probs, turned out to be a bent float needle!
All the jets & needles etc. are new, & i have set the float levels as well. The only thing i have not checked yet is the ignition timing !! Although i have a nagging feeling it is still carburation related.
8
« on: March 05, 2013, 07:35:45 PM »
Well i have done all i can think of, new plug caps et all ( all plugs have strong spark ). Balanced Carbs again ! At second thoughts it feels more like the choke is staying slightly on, when ridden it is sluggish but when opened up above 5000 rpm it accelorates quite quickly. Where do i look now !!
9
« on: February 16, 2013, 09:59:21 PM »
Well carbs all rebuilt & balanced, engine starts on the button & revs cleanly. Problem is when ridden the engine seems to be only running on 3 cylinders, the plugs are new & all have a strong spark. So, what do i try next new plug caps / HT leads, or could it be a faulty coil !! Any clues welcome please.
10
« on: January 15, 2013, 06:12:44 PM »
I sold this lovely (then !) CB550k in the Newbury Berks. area around 1988/89, & i have often wondered if it is still around. Unfortunately i cannot remember the Reg. No. but it was fitted with distinctive crash bars with twin horns. It would be nice to know if it still exists !! 
11
« on: December 15, 2012, 04:05:09 PM »
HELP, i have almost finished the carb rebuild but i have been & snapped one of the main jet retaining clips . I know these are hard to get hold of but does anyone have a spare one they could supply me with please. Other than that i have seen something somewhere on this site where someone has done a modification using a spring !! Cheers, Dave.
12
« on: December 02, 2012, 04:55:05 PM »
Well i have decided to stop fiddling about & to make them easier to work on have removed the carbs from the bike. To do the job properly i have also ordered new jets / needles etc. from David Silvers. Also the floats look like they have been bent about a bit in their lifetime so am thinking of getting new ones of them also, i don't think DS have any of these ( will call them tomorrow ), but if not does any one know where else i could get them apart from paying the horrific prices some sellers are asking in the USA  . Although i bought the bike as one i could tinker about with it now looks like i might be having to spend a bit more cash than i anticipated. I did take the indicated ( not guaranteed ) milage of 2,600 with a pinch of salt  although the Reg doc confirms the previous owner has only covered 150 miles in the 9 yrs he owned it ! Unfortunately the owner before him cannot be traced, so apart from knowing it was sold originally by Broomfields Motorcycles of Chelmsford & looks like NOO483P has spent its 36 yrs in Essex i cannot get any more info. about the bike, unless any one on here knows of course. 
13
« on: November 23, 2012, 06:11:45 PM »
Soounds to me like you need the proper Honda manual for the adjustments, as to the standpipe officially you have to replace the complete floatbowl which i think is teh same as the 500 but the only parts book i don't have is the 550f so i cannot be 100% on that.
I was looking at buying brass tube and drilling out and tapping the bowl then screwing in a tube with loctite but that is all still in me ead.
The jet retainer frequently falls out when you remove the bowl as its teh bowl that holds it in tight
OK, so i am replacing all the little O rings on the jets ( managing to do it with the carbs in situ). It seems like the floats in the 2 right hand carbs are just not cutting the fuel off at all so need a big adjustment. I now have a manual & it states the measurement between the top !! of the float to the base !! of the float chamber should be 22mm when the tang of the float is bent so that it is touching the jet. Could anyone explain to me in layman terms how this is measured ! Maybe a little diagram would help ! Also how could the floats alter so much in general use.
15
« on: November 18, 2012, 07:02:23 PM »
I know this is probably a long shot, but does anyone know if there is a paint available spray or touch up that matches the Candy Saphire Blue on my 1976 CB550f.
Cheers.
Dave.
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