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Test tool STP-6
Posted: Sun Nov 28, 2010 9:21 am
by yam700
Hi, I received this tool from a friend. It looks like a ball point pen but I think it is a test light of some sort. On the casing it says Snap-on STP-6. Would like to know more about it. Let me know if you need a picture.
Many thanks in advance!
Rob
Re: Test tool STP-6
Posted: Sun Nov 28, 2010 10:05 am
by agmechjake
I show a STP-7 in a 1973 catalog as a firing indicator for spark plugs. STP-6 is probably an earlier version
Re: Test tool STP-6
Posted: Sun Nov 28, 2010 11:33 am
by yam700
That is interesting, just need to figure out how to use it! Thank you for the reply, any other info would be great.
Thanks,
Rob
Re: Test tool STP-6
Posted: Sun Nov 28, 2010 12:20 pm
by agmechjake
yam700 wrote:That is interesting, just need to figure out how to use it! Thank you for the reply, any other info would be great.
Thanks,
Rob
You hold it next to a spark plug wire and it should light up if the plug is firing. I don't know what yours look's like but that is usually how they work. Post a pic.
Re: Test tool STP-6
Posted: Sun Nov 28, 2010 4:18 pm
by yam700
You are right! That is the coolest, I just fired up the truck and clicked the pen top and held the tip near a plug wire and it flashed in tune with the wire. I was a gm tech for 17 years and gave up the stress of flat rate to become a forklift tech. This tool will sure help with my no starts. When I find my camera I will post a pic.
Many thanks for your help for now,
Rob