11-11-2010, 08:31 AM #1
- Join Date
- Nov 2009
Use teflon tape for good compression check seal?
Did compression check with my $50 NAPA gauge yesterday. Had moisture around plug holes (I'm guessing condensation from sitting outside overnight after riding) and noticed air escaping from chamber around threads. Have 1/2" of thread on gauge. Can't get wrench down in there to tighten further. Can I use teflon tape to seal? Does gauge thread depth affect reading?
Read 105, 107, 110 on a 256 hour GP1200R. Rich (WFO) said that's a little low. Just wondering if sealing threads would bump that reading up some.
11-11-2010, 04:00 PM #2
- Join Date
- Jan 2006
- Texas City, Texas
Thread depth and gauge quality can both effect your readings. Suggest you beg, borrow, or steal a Snap-on or other high quality gauge with the proper thread depth.
The good news is that the readings that you got are within 10 psig of each other, and that is usually a very good sign.
11-11-2010, 06:18 PM #3
If you are talking about a compression tester gauge, they usually have a rubber o-ring that seals between the head and the fitting (on the fitting itself). It should only be hand tight. You just twist the rubber hose with your hands. I would not use a wrench on it as you would probably damage the o-ring.
11-11-2010, 07:40 PM #4
11-12-2010, 07:37 AM #5
Make sure you are doing your tests with the throttle open as well.
11-18-2010, 12:24 PM #6
Also make sure the battery is 100% charged.
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