Re: Ken's 1937 115C Touring Sedan

Posted by Owen_Dyneto On 2011/4/16 13:21:28

Ken - lots of ways to do a compression test. Assuming the engine has been running or in recent service:

- remove all the spark plugs
- open both the choke & throttle valves
- first test: run dry (no oil added)
- watch the gauge as you pump thru several compression strokes, usually pressure will stop building after the 3rd compression stroke and this is the value to record.
- IF values are low, then add oil as you did and run a second set of values to differentiate between rings and valves as the source of the loss.

Others may well have different techniques but I think this is the commonly accepted method.

I agree on the fuel pump, I used to rebuild them myself but the cost of good kits (don't buy NOS or even NORS) is only a bit less than the total cost from a good rebuilder like Gould or Terrill, among others. Current cost from Gould for a double-action Packard-type pump is about $98. Art Gould himself has been out of the busines for some years now, but on the one occasion where I had a problem - a water pump that got a little noisy after 3-4 years, there was no question about the warranty period - it was rebuilt again at no cost.