Posted by Fred Flintstone on September 25, 2007, 1:35 pm
So I bought some after market carbs for my 72 CL350 from SUDCO. I had
some problems with the carbs fitting into the carb holders. The one on
the left actually fell out of the carb holder while riding. Seems to
me they should fit as well as the old carbs at least.
Also another odd problem. Only one side of the bike was running, the
left side. I disconnected the right spark plug cable, and as soon as I
moved it say 1 inch away from the plug, you could see the spark
jumping the gap, and all of a sudden that side of the engine starting
firing. But once you put the plug wire back on, it stops that cylander
from firing.
Any ideas?
Thanks,
Kriss Tariske
yucaipa, ca
Posted by B-] on September 25, 2007, 2:21 pm
> So I bought some after market carbs for my 72 CL350 from SUDCO. I had
> some problems with the carbs fitting into the carb holders.
What are they, VM-style slide valve carbs, or what? Sudco has adapters
in their catalog, you just need to know what the spigot diameter of
your new carbs is.
>The one on
> the left actually fell out of the carb holder while riding. Seems to
> me they should fit as well as the old carbs at least.
They won't fit if the spigot diameter is smaller. If you cannot find
the correct diameter adapters, wrap two or three layers of silicone
rubber tape around each spigot to take up the space.
> Also another odd problem. Only one side of the bike was running, the
> left side. I disconnected the right spark plug cable, and as soon as I
> moved it say 1 inch away from the plug, you could see the spark
> jumping the gap, and all of a sudden that side of the engine starting
> firing. But once you put the plug wire back on, it stops that cylander
> from firing.
Swap the plugs and see if the symptoms move to the other cylinder.
The indication is low voltage and slow voltage rise time. The bad
spark plug is leaking voltage across the insulator nose faster than
the collapsing electromagnetic field can built the voltage up.
Also, clean and reset the ignition points to get as much current as
possible into the coil.
Posted by Fred Flintstone on October 17, 2007, 11:42 pm
Hey, thanks for the tips.
The only thing on the carbs? the spiget on the inlet side of the carb
is too BIG, not to small. It falling out was because of the
compression of the rubber forcing it out. I think i might make shift a
bracket to the carbs to HOLD them in once I figure out the spark plug
problem. The point are probably off, the carbs are probably crap.
But thanks for your help.
Kriss.
> > So I bought some after market carbs for my 72CL350from SUDCO. I had
> > some problems with the carbs fitting into the carb holders.
> What are they, VM-style slide valve carbs, or what? Sudco has adapters
> in their catalog, you just need to know what the spigot diameter of
> your new carbs is.
> >The one on
> > the left actually fell out of the carb holder while riding. Seems to
> > me they should fit as well as the old carbs at least.
> They won't fit if the spigot diameter is smaller. If you cannot find
> the correct diameter adapters, wrap two or three layers of silicone
> rubber tape around each spigot to take up the space.
> > Also another odd problem. Only one side of the bike was running, the
> > left side. I disconnected the right spark plug cable, and as soon as I
> > moved it say 1 inch away from the plug, you could see the spark
> > jumping the gap, and all of a sudden that side of the engine starting
> > firing. But once you put the plug wire back on, it stops that cylander
> > from firing.
> Swap the plugs and see if the symptoms move to the other cylinder.
> The indication is low voltage and slow voltage rise time. The bad
> spark plug is leaking voltage across the insulator nose faster than
> the collapsing electromagnetic field can built the voltage up.
> Also, clean and reset the ignition points to get as much current as
> possible into the coil.
Posted by Ken Abrams on October 18, 2007, 8:47 am
> once I figure out the spark plug
> problem. The point are probably off, the carbs are probably crap.
Pay attention. Our resident expert on everything gave you the answer. He
tends to be verbose and abrupt but, in most cases, you can find the answer
somewhere in his ramblings (or at least some good information that will lead
you to the answer).
In this case, I believe he told you that the spark problem was REALLY caused
by a way-lean condition. Fix the carb problem first; the "spark" problem
will likely disappear as if by magic.
Posted by Albrecht via MotorcycleKB.com on October 18, 2007, 11:11 am
Fred Flintstone wrote:
>The point are probably off,
Deteriorating ignition points condition is always a problem for motorcycles
of that era until you find an electronic triggering system that works.
>the carbs are probably crap.
If you don't have the skills to play a Stradivarius, it's just a funny-shaped
wooden box.
--
Message posted via MotorcycleKB.com
http://www.motorcyclekb.com/Uwe/Forums.aspx/tech/200710/1
> some problems with the carbs fitting into the carb holders.