Farmall A engine problems (Revisited)

Posted by Doug Stockman on March 14, 2010 at 04:28:39 from (70.100.145.146):

In Reply to: Farmall A engine problems posted by Doug Stockman on February 28, 2010 at 13:21:17:

Thanks to everyone for replying. I finally got some time freed up to try some of the suggests others made. I am happy to report that compression is good (100, 105, 105, 100) – no major rebuild needed. I did look at the spark from this cranked, magneto-started Farmall A. I do not have another magneto-fired tractor to compare. I compared the spark to my 1973 distributor fired Cub. The magneto spark is about ½ as bright as the Cub spark. If others feel this is weak, what should I replace first on the magneto to see if I can improve the spark. As mentioned previously, the plugs probably have less than 30 hrs on them. They still looked very clean. The plug wires also do not have many hours on them, well less than 500 hours I suspect. The magneto cap contacts did seem dull so I attempted to polish them up a bit (no help).

I was unable to check the intake manifold because I cannot get the tractor started again.

One concern I have is that maybe the carburator is where the problem exists. I am losing much more gas out of the bottom of the carburator than I remember happening before (when cranking). This might be due to the fact that previously the tractor started very well. However, I worry maybe I have a stuck float. I did tap multiple times on the carb but no difference. When I pulled the bolt out of the bottom of the carb, there was much gas still in the carb.

What do others think is my next best step?

Thanks again to everyone for their help. Much appreciated.

Doug

• Original post

Replies:

• Re: Farmall A engine problems (Revisited) Tims A 17:20:44 03/14/10 (0)
• Re: Farmall A engine problems (Revisited) Brownie 450 13:22:33 03/14/10 (0)
• Re: Farmall A engine problems (Revisited) ScottyHOMEy 07:05:01 03/14/10 (2)
  • Re: Farmall A engine problems (Revisited) Doug Stockman 14:09:22 03/14/10 (1)
    • Re: Farmall A engine problems (Revisited) ScottyHOMEy 14:52:43 03/14/10 (0)

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