Tillotson TC-5E float needle valve

[WinnerCougar74]

I have a 1974 Chrysler 135hp with two Tillotson RC-5E carbs. The float needle valve is all metal and new parts also look like all metal. No rubber/viton tip. Is this correct? Is there a rubber/viton seal inside the carb body? Just double checking since most float needles have to seal completely.

 

[WinnerCougar74]

Last post is not correct, the carbs are TC-5E

 

[Nordin]

If the needle is all in metal there is a rubber seal in the seat in the carb body.
If the needle has a rubber tip there is no seal in the body.
Check with a flashlight if there is a seal in the carb body or not, someone else (if the engine is new to you) could have put in a wrong needle.

 

[jerryjerry05]

If the needle is all metal and no rubber in the seat?? then the carb will leak fuel.
IF?? the seat has the rubber in it, then be careful what cleaners and soaks and additives you use, as the seat can swell shutting off the flow.
If it swells? rinse in soapy water and let air dry. The swelling will go away eventually.

 

[WinnerCougar74]

I have a metal only inlet needle. But when I look into the seat area I do not see any rubber, I only see metal. So then that means it is not sealing properly, Could this lead to a generally rich mixture and chronic fouling of plugs in a short period of time?

 

[WinnerCougar74]

Well, my own personal parts bin saved the day again. I have another complete set of carbs and they have inlet seats with rubber tips. I wonder how I can find replacements if these ever fail.

 

[jerryjerry05]

Granger might have needles??
Could this lead to a generally rich mixture and chronic fouling of plugs in a short period of time? Yes. It will allow excess fuel and make it run bad.

 

[WinnerCougar74]

Thanks for the confirmation. It's actually very important.

 

[racerone]

Chronic fouling would not be caused by a wee bit of leakage on float needles.----There must be other things to check out.

 

[WinnerCougar74]

I also discovered the main jet was one size too big. 0.0960 when it should be 0.0937