SOHC.co.uk Forums > CB500/550
New Honda cb550f in the family but... Engine rattle!!
Noelia:
--- Quote from: matthewmosse on March 17, 2016, 07:55:02 PM ---If the thing ran perfectly for the last owner last week, then plug caps would be my first port of call, just tighten them on a turn and / or wd40 sprayed up inside the cap - for some reason I had a spate of plug caps fail across 3 differnt bikes in the last 4 years, none previously to that, wd40 seemed to revive them briefly - enough to get home / keep commuting a few weeks. It cannot hurt to do a full service for peace of mind in any case.
--- End quote ---
I haven't thought about that I will check the plugs tonight.
Thanks!!!
Noelia
Noelia:
Picked up the 550 yesterday from the garage but the engine is still rattling... Carbs have been balanced, valves and cam chain adjusted.
The mechanic said I need to have a long ride for it to settle and go away, does anyone experienced something like this before?
Noelia
matthewmosse:
Check there is oil getting to the top end..... best way, I'm not sure without disturbing the rocker cover. Possibly pull the two end caps off and see oil comes out, or just open up the 8 caps for valve adjustment and see if plenty of oil is up there. My first 550 had a nasty rattle that proved to be symptomatic of no oil to half the top end thanks to a blocked oilway, it dropped a valve eventually, the top end was already as rough as a rough thing. I doubt yours is that rough inside but they will run fairly sweet even missing piston rings and scored bores. Sometimes they do settle down to run quiet from a rattly start when serviced. Have you verified all 4 cylinders are sparking properly?
Trigger:
Any bike that comes in to my hands, always has the sump off to see if there is any secrets inside.
Noelia:
I took the bike to a very reputable mechanic in my area, he owns all vintage bikes from a Norton commando to trials and he has had checked all out and said is ok and that the bike needs running to settle as it has only covered like 100 miles per year since 1994... On the way to the garage the bike ran awfully, 1st gear very short and the more I pulled the throttle the less power it had, on the way back it felt much better but the noise was still there. (Only when I'm not accelerating) I will take tomorrow for a ride, I will put new petrol in and I'll cross my fingers for it to go quiet! I'm very frustrated right now, bike wise.
I will let you all know how does it goes tomorrow!!!
Noelia
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