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Zenith 175 CD Choke

rjhorizon

Senior Member
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Hello everyone. I am the new kid on the block. Looks like a great site. Hope to be spending some time here in the future.

However, I have an issue I am trying to resolve with my TR-7. First a little background. I recently bought a 79 TR-7 convert with the 2 liter engine and dual 175 CD carbs with a water auto choke that doesnt work. Also had gas leaks, etc so I decided to rebuild them and change the fuel lines, etc. The PO had also taken off valve cover vent and carb bowl vents etc so I had some oil mist blowing around in addition to gas fume.

I went thru the carbs and replaced the float valves, diaphragms, cleaned them out and removed the auto choke. Put everything back together along with tieing in the valve cover vent, carb bowl vents to the carbon canester and piped the carbon back to the carb ports to close the loop.

Shot a little starter in as it was cold out and it fired up great. However, I now have a gas and vac leak with one carb where the auto choke was. I put a manual choke assy and gasket on from an old carb set that came with the car. That stopped the leak. The choke linkage is not hooked up. Just using it to seal the carb.

So whats my problem? I want to cable up the manual choke but when I work the choke by hand, it seems to have no effect on idle speed, etc.

Does anyone have a plain/simple reference that expalins the workings of the manual choke and what I may have done wrong. Also why does the old carb assy have two manual chokes and the water choke was only on one carb? Did the PO mix things up on me?

Thanks for your time. I am looking forward to a gas fumeless drive soon. My wifes not impressed with my success either.
 
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