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29 Tudor · 06-29-2014, 06:46 PM

I had a similar problem with my '29. Turned out to be a needle and seat that would not deliver enough fuel to support the engine at that load. You can pull the plug at the bottom of the carb and measure the flow (I used a quart jar) and determine of you have enough to support the engine. At 40 MPH, it takes 90 seconds to cover a mile. I assumed the mileage at 40 MPH climbing a hill (at full throttle) to be 5 MPG. That means you need at least .2 gallons out of the drain in 90 seconds to support that mileage. When I checked mine, it was much lower than that. After replacing the needle and seat, it was much higher and the problem was gone.

Steve

06-29-2014, 06:46 PM	#10
29 Tudor Senior Member Join Date: Apr 2011 Location: Magnolia, TX Posts: 161	Re: Loss of Power up Hill I had a similar problem with my '29. Turned out to be a needle and seat that would not deliver enough fuel to support the engine at that load. You can pull the plug at the bottom of the carb and measure the flow (I used a quart jar) and determine of you have enough to support the engine. At 40 MPH, it takes 90 seconds to cover a mile. I assumed the mileage at 40 MPH climbing a hill (at full throttle) to be 5 MPG. That means you need at least .2 gallons out of the drain in 90 seconds to support that mileage. When I checked mine, it was much lower than that. After replacing the needle and seat, it was much higher and the problem was gone. Steve