Tuesday, March 22, 2016

A Day of Diddling

More Headaches.

Tuesday I drove over to Rick's house to help with the Kawasaki.
We took off the gas tank and the carburetors to check the intake connections to the cylinders.
Now this is one of those arrangements designed by a sadist.
If you could remove the air filter canister it would be easy; I think it must be the first part installed in the frame at the factory. The only way I can see to get it out is to take the gas ax to the frame.
You have to remove all of the hoses and cables, then you can tug, pull, and push the four-carburetor assembly out from in between the rubber boots it sits between.


Here you can see the carbs.

One of the problems with them being so close is that the clamp screws on the rubber boots get worn over time due to the screwdriver slipping or the wrong screwdriver being used.
We decided to install socket head screws, of course each side of the boot uses a different screw.
Off we went to Ace hardware to grab new screws. We started re-assembly only to find that one of the new screws was wrong. Not enough so that you would notice, it was probably a stock SAE screw dropped into the metric bin.
GRRRRR! back to the store for a new screw. (As the actress said to the bishop)
Now you have the reverse problem, pushing the carbs back through the gap between the boots and hooking up the cables and hoses.

Once it was all connected we tried running the bike, it starts up real nice and idles OK but when you run up the revs it takes a long time to come back down to idle.

After disconnecting the CARB (California Air Resources Board) required bits, multiple valves, hoses etc we found that by inserting a small orifice in the vacuum line from the manifold the engine speed came down much better. Hmm, maybe we are onto something.


We reconnected all the CARB stuff and it worked well for a short while then started acting up again.
It's my opinion that the problem lies in one or more of the emission control components.
More research and diddling required.


One of the benefits of living in So-Cal is of course the weather, here we are working under the shade of a palm tree with Hibiscus flowers in bloom.

As we now have clear skies most of the time I guess that I shouldn't bad mouth the CARB restrictions too much.
I still think that they should not apply to motorcycles.
Just my opinion...

Ciao 
Norm

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