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On 23 Jul 2004 at 12:31, Mark Healey wrote: > I was in Sears the other day checking out the tools and they had this > inductive spark checker. You just hold it against the wire and a > light inside goes off if there is a spark. > > Do they work and how accurate are they. > > Will they light with any spark or only with a good one? My guess is that it's exactly the same as clipping your inductive timing light around a SP wire. This is a good way to test to see if current is actually running thru that wire when it should be. I would still prefer to use my timing light for this test, because I probably already have it out and it also tells me other good info. You could make your own with an LED, a ferrite torroid, and a piece of wire. I suggested that to a friend recently and it just helped him solve a year-old problem with his Volvo. His car would quit and he didn't know if it was due to loss of spark or of the EFI. He added this spark pickup and ran the wire to his dash so he could watch the LED. The next time the car died he could see that the LED still flashed when he tried to restart. The next day he found the bad solder joint where some relays were mounted to a PC board. -- ******************************* Jim Adney, jadney@vwtype3.org Madison, Wisconsin, USA ******************************* ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ List info at http://www.vwtype3.org/list | mailto:gregm@vwtype3.org ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ~ Shameless link for search engines: http://listarchive.type3.org ~ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~