yorab
Ensign
- Joined
- Jul 6, 2002
- Messages
- 960
I want to run a compression test on my motor with the gauge that I have. It is a K-D Tools #2428. It's a basic gauge that I've used before on cars and on my boat motor. However, I realized that I can't tighten it properly because of the depth of the recessed spark plug hole. I can't get a wrench down in there to tighten it enough to prevent air leakage at the spark plug hole threads. I tried to simply turn the hose, but there is a free-spinning connection between the hose and the end that screws into the plug hole. Therefore, turning the hose does not tighten the end.
I checked the compression on this motor about 7 or 8 years ago and I believe that I used the same gauge. I don't remember ever buying a new compression gauge between then and now. I can't remember how I tightened it then. I'm wondering if the connection should not be free-spinning and perhaps the tool has broken. I should also note that the hose connection closest to the gauge also spins. Could it be that both hose connections have broken?
The tool came with two adapters that are metric. Obviously these won't work for me, but I thought that if I could find an extension that is similar to the adapters, I would be in business since they extend the end enough that I could get a wrench onto them. So I went to the local fastener shop and picked up two fittings that essentially act as an extension. However, I can see one potential problem; the threaded end of the homemade extension is longer than the original threaded end of the gauge by a few millimeters. I'm afraid that I'll screw the extension into the hole too far and bang a piston against it.
Any thoughts? I can certainly post pics if any of this is unclear. Just let me know.
I checked the compression on this motor about 7 or 8 years ago and I believe that I used the same gauge. I don't remember ever buying a new compression gauge between then and now. I can't remember how I tightened it then. I'm wondering if the connection should not be free-spinning and perhaps the tool has broken. I should also note that the hose connection closest to the gauge also spins. Could it be that both hose connections have broken?
The tool came with two adapters that are metric. Obviously these won't work for me, but I thought that if I could find an extension that is similar to the adapters, I would be in business since they extend the end enough that I could get a wrench onto them. So I went to the local fastener shop and picked up two fittings that essentially act as an extension. However, I can see one potential problem; the threaded end of the homemade extension is longer than the original threaded end of the gauge by a few millimeters. I'm afraid that I'll screw the extension into the hole too far and bang a piston against it.
Any thoughts? I can certainly post pics if any of this is unclear. Just let me know.
