LOL
See there, they already upgraded the product. You might want to update the desription to say so. It still says it only has the one valve.
The correct kind of compression guage
- Thread starter blsnelling
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LOL
See there, they already upgraded the product. You might want to update the desription to say so. It still says it only has the one valve.
KMB
Addicted to ArboristSite
Now why didn't I think of that...
. I just bought the necessary valve tool for my vehicle tires, so it's worth a try. Thanks.Kevin
redunshee
Addicted to ArboristSite
Now I don't know if my Baileys tester has the Schraeder valve in the tip or not. Do I understand you to say the "new" ones have the valve in the tip? Any idea when they changed designs? The one I purchased about 1 yr. ago has the same model# as the current model(G-320HD) .
woodguy105
ArboristSite Guru
This topic comes up every week and often more frequently. You absolutely MUST have a Schrader valve at the tip of your compression guage for use on a small 2-stroke engine. If it does not, you cannot use it, period. A Schrader valve is what's found in the stem of your car rims. The reason it is required is because of the small volume of these engines. It is not enough to pump up the pressure of the hose with every pull and you will end up with a way low reading. I wonder how many engines have been torn down that were perfectly fine? Some guages have a release valve up by the guage. That is not sufficient and does not take the place of the valve at the tip.
Good Idea Brad...maybe a stickey double header Compression tester / Tach thread is in order.
woodguy105
ArboristSite Guru
I got one for xmas from Baileys and the valve was not on the fitting end as is needed..ended up sending it back...looks like it might be time to reorder!
whitedogone
Addicted to ArboristSite
Do we really need another thread (65 posts and counting) to tell everybody to go to Autozone and buy a compression gauge? 
rngrchad
Addicted to ArboristSite
And that my friends, is the gauge all gauges should be compared to. Snap-On. If I ever care enough about compression readings on a work saw, I think I'll go back to the dealership I worked at and compare my Mac Gauge to the heavy r+r technician's Snap On one. And yes, if I didn't own a Snapon Gauge, it would probably take over 65 posts to convince me to spend 250 bucks rather than 15 for one from Autozone
cpr
Addicted to ArboristSite
Here's the ones I have. No, the Lisle doesn't read that low, lol. The Homey just has tons of compression.
Stihl MS210
Funny you say that. I have the same Lisle as you and have never experienced any inconsistentcy, but I do feel that mine tends to read approximately 5 to 8 psi lower than most published numbers I find for various things, both saws and tractors. For instance my 372 has never pumped more than 140psi. It's still pretty new and not broken in, though. My much used 141 pumps 155, so who knows? Whether that disparity is the gauge or "number pride" on behalf of those posting the numbers, I don't know. What I have found is that certain saw jugs and certain tractor heads the gauge is VERY touchy about how it gets threaded in. It wants to cross thread sometimes.
Husky 61
here's part of my instrument drawer.
two Snap-on compression gauge sets. one for lower range to 250 psi, other for higher pressures. all sorts of adapters for myriad of plug sizes out there. all adapters have shrader valve at tip.
Drager Gauge has been old faithful... had that Drager though thick and thin.
other gauge is for fuel injection to 100 psi. Snapon oil pressure, fuel pressure/vacuum gauges are inside red cases.
two Snap-on compression gauge sets. one for lower range to 250 psi, other for higher pressures. all sorts of adapters for myriad of plug sizes out there. all adapters have shrader valve at tip.
Drager Gauge has been old faithful... had that Drager though thick and thin.
other gauge is for fuel injection to 100 psi. Snapon oil pressure, fuel pressure/vacuum gauges are inside red cases.
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whitedogone
Addicted to ArboristSite
I have a freind that is a chevy wrench. I told him I wanted to check my cheap as gauge with his Snapon gauge. He brought home his and a buddies MAC. He had made a manifold that all 3 screwed into. We hooked them all up and used my compressor to pressurize the whole afair. They all showed within 2psi @40#, 3 psi@80#, and at 120 they were all back to within 2# of each other. At 140 they were within 4psi of each other. My compressor wouldn't go any higher than that. WDO
most gauges are well within accuracy range.... if they are properly calibrated by checking against a known to be correct gauge.
Lisle seems to make consistently high quality specialty tools.
Lisle seems to make consistently high quality specialty tools.
KMB
Addicted to ArboristSite
Now why didn't I think of that...
Kevin
The Schrader valve was loose, so I tightened it down 'just snug', but it still doesn't work. Actually, it wouldn't read at all after that. With it 'just snug', the valve doesn't work like it should (the valve end piece will not move up/down). With the valve loosened, it will function (I can push the valve end piece and it moves up/down). I'm not sure if I'm describing this properly. I think I just need to get a new one and compare how the Schrader valve's
Kevin
davido30093
ArboristSite Member
Replace the stem
Remove the valve stem completely and get a new one. Most autoparts stores have them. That should fix your guage.
Remove the valve stem completely and get a new one. Most autoparts stores have them. That should fix your guage.
I think they may be a special valve with a very weak spring. I'm not sure on that.
I walked out to the barn and had a look at my Bailey's gauge that I just bought but haven't used yet. It doesn't have the screw in tire valve as is traditional, it's permanently made into the tip instead. It replaced my old Advance Auto gauge that had a QD for different hose fittings. It was cheap and got to where when I would pull on the start cord, the gauge would pop off at the QD. Impossible to use.
Didn't think Bailey's would sell something not suited to the purpose and I wasn't disappointed.
Ian
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Check out Greggs response. It didn't used to have the valve but was updated earlier this year.
Glad I waited till now to get it then... LOL
Ian
Ian
KMB
Addicted to ArboristSite
I'll take the valve out and take it to a local auto parts store and see what they have and compare.
Kevin
KMB
Addicted to ArboristSite
Brad was right. I went to the local auto parts store and they had a valve with a stronger spring. For a $1.30 I gave it a try. The gauge read a max of about 90psi on my 970 and I know it has more than that. When the tester was working properly with the original valve (before it broke), the 970 was reading around 150psi (I didn't record it...should have...and will). So a new tester it will be.
Kevin
