RegionX's Problem Thread

Forum rules
Please can you post items for sale or wanted in the correct For Sale section. Items / bikes for sale here will be removed without warning. Reasons for this are in the FAQ. Thanks
RegionX
Settled in member
Posts: 136
Joined: Tue Oct 18, 2011 10:02 pm
Bike owned: VFR400 NC30
Location: Cape Town

Re: RegionX's Problem Thread

Post by RegionX » Tue Feb 21, 2012 1:49 pm

Thanks for the help, ended up checking and cleaning all electrical connections. The coils were a problem and I re-soldered the ignition (as in where the key goes). She got consistent spark and fired up, after seeing a leak ad realizing it was only running on 3 cylinders I took the carbs off and fitted them back which worked like a charm. Roared in to life sounding better than ever...

Problem is I still have inconsistent idle as well as many other issues but I'l take them a couple at a time so:

1. The exhaust spewed out burnt carbon deposits, I assume this is from the exhaust and not the engine, what do you think?

2. I tuned all carbs to 2 and a half turns out as in Haynes, how do I know what further tuning is required?

Neosophist
Moderators
Moderators
Posts: 8172
Joined: Fri Jul 04, 2008 1:01 pm
Bike owned: CBR954

Re: RegionX's Problem Thread

Post by Neosophist » Wed Feb 22, 2012 2:14 pm

RegionX wrote:Thanks for the help, ended up checking and cleaning all electrical connections. The coils were a problem and I re-soldered the ignition (as in where the key goes). She got consistent spark and fired up, after seeing a leak ad realizing it was only running on 3 cylinders I took the carbs off and fitted them back which worked like a charm. Roared in to life sounding better than ever...

Problem is I still have inconsistent idle as well as many other issues but I'l take them a couple at a time so:

1. The exhaust spewed out burnt carbon deposits, I assume this is from the exhaust and not the engine, what do you think?

2. I tuned all carbs to 2 and a half turns out as in Haynes, how do I know what further tuning is required?
Uneven idle.

Possible symptoms in most likely order

'Bad Carb Balance' - Use a vaccum gauge
'Bad carb rubbers' - Air leaking.
'Bad Pilot circuit' - Use carb cleaner and high pressure airline to clean out pilot jets AND the 3 hole circuit that runs to the butterflys.
Bad Float Height - Check and reset.. 6.8mm on NC30.
xivlia wrote:i dont go fast on this bike so really do not need a rear brake.. /
vic-vtrvfr wrote:Ask xivlia for help, he's tackled just about every problem u could think of...

RegionX
Settled in member
Posts: 136
Joined: Tue Oct 18, 2011 10:02 pm
Bike owned: VFR400 NC30
Location: Cape Town

Re: RegionX's Problem Thread

Post by RegionX » Wed Feb 22, 2012 5:25 pm

Thanks, I reckon carb balancing is in order but how to do it is another story, may actually go to a mechanic for this one.

Post Reply