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Messages - mickwinf

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1486
CB500/550 / Re: 3 cylinder 550
« on: March 09, 2011, 07:10:18 PM »
bad news.today i did a compression test,less than 50psi on cyl 4, so looks like valve trouble after all, really depressed now!

1487
CB500/550 / Re: 3 cylinder 550
« on: March 08, 2011, 09:35:26 PM »
thanks for advice guys i had it running again tonight, it seems to fire on all four when the throttle is blipped but on lower throttle openings still on three, so maybe carbs are the problem after all! petrol is getting to carb ok and vent pipes are clear, no extra sparks in dark.

1488
CB500/550 / Re: 3 cylinder 550
« on: March 07, 2011, 09:54:17 PM »
thanks for quick response guys will try again. Ref cam timing i reckon it was 90 degrees out, some "expert" did it before, luckily i only turned it over slowly on the kickstarter and stopped as soon as it went solid! hope i have not got a bent valve, i have just ordered a 12mm converter for the compression gauge which should throw some light on it!

1489
CB500/550 / Re: 3 cylinder 550
« on: March 07, 2011, 09:43:50 PM »
steve it dosn't seem that wet when i remove the plug, so i tried squirting carb cleaner in the carb and a bit in the cylinder, expecting it to fire but no luck!

1490
CB500/550 / 3 cylinder 550
« on: March 07, 2011, 09:33:50 PM »
hi guys would like some tips to get my k3 running better. After 28 years in bits the engine now runs, but only on three cyls, no 4 is not firing. I have swapped plugs and checked timing, also opened gap on valves  which seemed to improve matters slightly.New plugs points and coils fitted but only occasional spit back through no 4 carb, if plug lead taken off with engine running it makes no difference.When checked against earth plug has strong spark.Is it likely that it is a valve problem, the head and barrels were rebuilt by po, and i already discovered cam timing was well out!!  Any ideas welcome, thanks,Mick

1491
CB500/550 / Re: plastic seat
« on: March 07, 2011, 09:21:28 PM »
i was thinking of ordering one of these seats for my k3,dont think i will bother now!!

1492
Recommended Sources for Parts and Services / Re: air compressor
« on: March 05, 2011, 08:33:22 PM »
hmmmm thanks for info, think i might pay someone else to do it! Dont want to die just yet!

1493
Recommended Sources for Parts and Services / Re: air compressor
« on: March 05, 2011, 02:28:43 PM »
yes kacey am gonna attempt to spray, a long time since i did any, is it still cellulose paint? or will i need breathing masks for 2k? very usefull piece of kit.

1494
Recommended Sources for Parts and Services / air compressor
« on: February 21, 2011, 09:08:40 PM »
just bought a nice compressor on offer at screwfix,

1495
CB500/550 / Re: Strange fault
« on: February 19, 2011, 08:29:48 PM »
back to the slow jets, now the new ones are in i sawed an old one in half, the through holes were solid at both ends but clear in the middle, as if they were deliberately blocked, so i checked another one, it was the same, weird! no way to clear them exept to drill so glad i got new ones.

1496
CB500/550 / Re: cb550 k3 lives again
« on: February 19, 2011, 08:21:33 PM »
haha success!!! it runs! cleaned plugs charged battery, lots of kickstarting and eventually it kept going.at last.Still not quite right, not firing on no 4 cyl spits back through carb, but so happy !! Cheers to all who offered advice and encouragement will keep you posted. Regards, Mick

1497
CB500/550 / Re: cb550 k3 lives again
« on: February 18, 2011, 11:34:30 AM »
thanks for advice and encouragement guys, will keep trying.Yoshi those leads are a bit long,new coils had extra long to suit different bikes i guess,i will trim to size when the f*****g thing goes!

1498
CB500/550 / Re: Strange fault
« on: February 16, 2011, 08:33:12 PM »
carbs reassembled and cleaned, still wont go! Scratching my head now!

1499
CB500/550 / Re: Strange fault
« on: February 15, 2011, 09:05:10 PM »
 recieved slow running jets from canada only took 2 weeks, will fit soon and try again, wish me luck!

1500
New Member Introductions / Re: Hi everone, return to the fold.
« on: February 15, 2011, 11:35:57 AM »
hi Nigel welcome to the forum! As a k3 owner i have the same problem, 4/4 exhausts are almost impossible to find (see my other posts for details).In fact i bought a complete bike just to get some ! I dont think anyone will re-manufacture them as the costs would be too great for the limited market, so NOS or s/h is the only way, i have a 4/1 motad for now! regards, Mick

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