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Here is a trick I learned by trial and error yesterday. I have not posted in a long while mostly cause my bike runs so well.
This is to trouble shoot that just dipped carburetor you just installed into your bike to wonder why no gas is flowing into the chambers.
I picked up a bike on ebay that had her carburetors off of her and the rubbers boots too. I found most of the information from this site to be able to rebuild them. It is a Gs 1977 400 twins mikuni.
After installing the newly cleaned, and dipped carburetors. I was still not getting any gas flow to the pistons. I took them off, reexamined my work on them and still everything was in place and working. Floats all seemed to be in proper place and tangs set to the proper place. But, still no gas flow.
Here is the trick, hang a rope down from the ceiling, get a five-gallon bucket (empty) to set underneath the carburetors. Tie the carbs to the dangling rope so it is suspended above the bucket. Now take off your gas tank and take it over to the dangling carbs over the bucket. Make sure your tank is higher than the carburetors. Also make sure you have enough towels for any extra spills. The idea is to have the entire gas overflow into the five-gallon bucket. Now that everything is in place. Take off the bottom of the bowls of the carburetors. Hook up a fuel line to the tank to the carburetor?s main fuel intake. With the dangling, now exposed floats to the carburetors and the gas tank higher than the carburetors, turn on the gas. If your carbs are working right, you should see gas start to flow into the bucket thru the floats. If you push up on the floats (very gently) this should shut off the gas. While doing my test I was then able to see only one side of the carbs working or flowing down the gas and then wondering where my problems lie. I was able to trouble shoot where the problem was. It was in my second main fuel tube that was plugged up blocking the gas to the second float. The solution for that fix was simple air pressure from a set compressor to blow out the blockage. Since I can?t dipped the main body of the carbs, (due to some stuck rubber), I couldn?t see the problem till I did what I did.
A perfect working carburetor will flow gas into the hanging bowls at a good rate too. Slight pressure from the float pushed upward should shut off the gas like a toilet bowl insides does.
But this is new for me to do and I thought maybe It might help some of you out there trouble shoot your carburetor problems.
Btw the gs runs flawlessly now. Now I am doing a search for ignition timing on the points.
This is to trouble shoot that just dipped carburetor you just installed into your bike to wonder why no gas is flowing into the chambers.
I picked up a bike on ebay that had her carburetors off of her and the rubbers boots too. I found most of the information from this site to be able to rebuild them. It is a Gs 1977 400 twins mikuni.
After installing the newly cleaned, and dipped carburetors. I was still not getting any gas flow to the pistons. I took them off, reexamined my work on them and still everything was in place and working. Floats all seemed to be in proper place and tangs set to the proper place. But, still no gas flow.
Here is the trick, hang a rope down from the ceiling, get a five-gallon bucket (empty) to set underneath the carburetors. Tie the carbs to the dangling rope so it is suspended above the bucket. Now take off your gas tank and take it over to the dangling carbs over the bucket. Make sure your tank is higher than the carburetors. Also make sure you have enough towels for any extra spills. The idea is to have the entire gas overflow into the five-gallon bucket. Now that everything is in place. Take off the bottom of the bowls of the carburetors. Hook up a fuel line to the tank to the carburetor?s main fuel intake. With the dangling, now exposed floats to the carburetors and the gas tank higher than the carburetors, turn on the gas. If your carbs are working right, you should see gas start to flow into the bucket thru the floats. If you push up on the floats (very gently) this should shut off the gas. While doing my test I was then able to see only one side of the carbs working or flowing down the gas and then wondering where my problems lie. I was able to trouble shoot where the problem was. It was in my second main fuel tube that was plugged up blocking the gas to the second float. The solution for that fix was simple air pressure from a set compressor to blow out the blockage. Since I can?t dipped the main body of the carbs, (due to some stuck rubber), I couldn?t see the problem till I did what I did.
A perfect working carburetor will flow gas into the hanging bowls at a good rate too. Slight pressure from the float pushed upward should shut off the gas like a toilet bowl insides does.
But this is new for me to do and I thought maybe It might help some of you out there trouble shoot your carburetor problems.
Btw the gs runs flawlessly now. Now I am doing a search for ignition timing on the points.
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