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Does it leak out the overflow tube or cannot tell?
Does it do it all the time?
Do you turn the petcock off when you stop the engine?
Did you remove/check the needle valve under the float?
Does it leak out the overflow tube or cannot tell?
Does it do it all the time?
Do you turn the petcock off when you stop the engine?
Did you remove/check the needle valve under the float?
1-overflow tube
2-yes
3- no (if I do I get no overflow, the valve of the tank is working)
4- yes, the needle is good
Basically, you want the float at level with the surface of the bottom of the body, just as the valve closes. Video 2 is for the later CV carb, however if your needle valve is the spring loaded type, I'd use video 2. That is, the carb at a 15 degree angle when checking the float.
You can do an assembled float level check on some CV models (that have a drain screw) but not on the butterfly model.
SOLID (original type) on most butterfly carbs
SPRING type used on most current carbs and they are interchangeable.
Some guys use a cotton swab (Q-tip) with metal polishing paste to clean and polish the needle valve seat. They are brass and don't corrode but can get rough over time from deposits so they don't seal well. Tiny amount on the swab and using a drill or twisting with you fingers, work it till it's mirror shiny.
Also, I've seen several modules on ebay today. One is the original type and others have the 7-pin plug, which could easily be wired to work just fine. Here's a few....
From what many mechanics say the butterfly should be replaced as soon as possible with at least a CV.
Yeah, I changed mine. Went from 35 mpg to 48mpg and more power. But I have to say, that butterfly would start and run below freezing, cold idled perfectly at half choke in any weather, never stalled or spit even when cold. Replaced one pump and it only wet the ground one time when I left the fuel on for a week...
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