Hope you can stand another "compression test results" thread
gambled..........and lost.........on a Horrid Freight. Turns out they do NOT use the standard .040 orifice. Bought a .040 some sort of carb jet off egag and made my own. It would have been cheaper, in the end, to start from scratch, damn near. Although the HF unit yielded "the basics" including plug hose/ adapters etc
Wiki page on these testers, they were born in aviation
https://en.wikipedia.org/wiki/Leak-down_tester
The HF after modification. Changed the one gauge with an old AC manifold one for the higher pressure
I found a .040 some sort of carb jet on Egag and lucked out--was able to reach into the HF body and tap it to screw the jet/ orifice right in
gambled..........and lost.........on a Horrid Freight. Turns out they do NOT use the standard .040 orifice. Bought a .040 some sort of carb jet off egag and made my own. It would have been cheaper, in the end, to start from scratch, damn near. Although the HF unit yielded "the basics" including plug hose/ adapters etc
Wiki page on these testers, they were born in aviation
https://en.wikipedia.org/wiki/Leak-down_tester
The HF after modification. Changed the one gauge with an old AC manifold one for the higher pressure
I found a .040 some sort of carb jet on Egag and lucked out--was able to reach into the HF body and tap it to screw the jet/ orifice right in