Another leakdown testing question Options

[rtalich]

Connecting air to the tool and setting the pressure so that the first gauge reads 100psi BEFORE connecting to the cylinder. When I do connect to the cylinder, the pressure drops a bit. Do I re-adjust back up to 100psi before taking my % reading?

Thanks,
Rob

[rtalich]

Rob if you have the two gage style you do want to readjust the first gage to read 100 after connecting to the cylinder. You don't have to, but it makes the math easier, (no need for the calculator.) If you have the single gage style you do not reset the gage to read 100 after connecting to the cylinder.

BTW the harbor freight gage is a POS!

Hmmm.... Interesting. So I did do it right the first time. Thanks for the clarification!!

I found for myself with the HF tool. I borrowed a tester from Dave Hunt (which is not from HF) and wanted to compare results with another tool. The HF one is the only one I could get right away. I took it back because it did not work right out of the box.

Yes, maintaing 100 PSI working pressure makes things easy because the actual values can be used.

The gauges are the bad part of the HF arrangement, you can replace them with something more accurate.

Like I said above, Jake, the first leak down numbers I posted in the engine kit forum are correct then. That makes me feel better!!

Thanks,
Rob