Help - power problems - SD900

Hello all,

I turn to the collective widsom of this group to help me sort out an issue I
have with my 84 SD900.
The problem started when I serviced my bike over the weekend. It was the
first service I did since buying the bike so I took my time as I was
keen to get it right. Dropped the oil and loosened the rh carburator clamp
so that I can swivel the carb out of the oil filter caps way. Changed oil
and oil filter.

After I put everything back together and fired it up, it idled ok. I then
took it around the block only to discover the bike refused to take off
from idle. The bike bogs down and it appears like it's running on one
cylinder. Ocassionally when I give it full throttle the bike surges,
cuts-out and pops from the carburator intake. (saw a blue flame pop out
while riding without the air pod ) . Thinking I may have dislodged something
when I swivelled the carb, I grabbed some carb cleaner and proceeded to
squirt it down the intake while rapping on the throttle in short burts.
Problem still there.
Ripped off the carburator, pulled it apart and cleaned all the jets and
everything that's resembles brass and can be unscrewed. Put it all back
together, problem still perists.

what could be wrong here? Is the problem perhaps electrical, How can I
troubleshoot caruburation problems while the carbs are on the bike?

My bike has a 2-1 exhaust, runs 40MM dellortos and has K&N air filter pods.

The nearest mechanic that can service this bike is 40 kms away, so before I
get the car trailer ready and cart it to him, I want to at least cover-off
the basic and most obvious.

thanks in advance.

Vifer

I don't know your bike but - is there a rubber or plastic mounting
between the carbs and the engine? Could it have perished and when you
took it off perhaps it tore without you knowing, and there's an air leak
there?

vifer wrote:
 > Hello all,
 >
 > I turn to the collective widsom of this group to help me sort out an issue I
 > have with my 84 SD900.
 > The problem started when I serviced my bike over the weekend. It was the
 > first service I did since buying the bike so I took my time as I was
 > keen to get it right. Dropped the oil and loosened the rh carburator clamp
 > so that I can swivel the carb out of the oil filter caps way. Changed oil
 > and oil filter.
 >
 > After I put everything back together and fired it up, it idled ok. I then
 > took it around the block only to discover the bike refused to take off
 > from idle. The bike bogs down and it appears like it's running on one
 > cylinder. Ocassionally when I give it full throttle the bike surges,
 > cuts-out and pops from the carburator intake. (saw a blue flame pop out
 > while riding without the air pod ) . Thinking I may have dislodged something
 > when I swivelled the carb, I grabbed some carb cleaner and proceeded to
 > squirt it down the intake while rapping on the throttle in short burts.
 > Problem still there.
 > Ripped off the carburator, pulled it apart and cleaned all the jets and
 > everything that's resembles brass and can be unscrewed. Put it all back
 > together, problem still perists.
 >
 > what could be wrong here? Is the problem perhaps electrical, How can I
 > troubleshoot caruburation problems while the carbs are on the bike?
 >
 > My bike has a 2-1 exhaust, runs 40MM dellortos and has K&N air filter pods.
 >
 > The nearest mechanic that can service this bike is 40 kms away, so before I
 > get the car trailer ready and cart it to him, I want to at least cover-off
 > the basic and most obvious.
 >
 > thanks in advance.
 >
 > Vifer
 >
 >
 >
 >
 >
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