Re: Spark Tester
The problem with the one in the above link is that you cannot adjust the gap. I made one out of scrap. I can't do a diagram but lets see if I can describe it.<br /><br />1. Take a piece of alumnium - maybe 3' long by 1" wide by 1/8" thick - the dimensions are not that important. I attached a ground wire with an aligator clip to one end of the alumnium bar. <br /><br />2. Take a scrap 1 X 3" pine board the same length as the alumnium bar. Cut a notch for each spark plug in the board (I used a hole saw like for a door handle). <br /><br />3. Find long machine screws that will fit into the end of the spark plug wires. You may have to do some filing on the heads of the screws. Drill a hole the same diameter as the screws through the top of the notches cut in the pine board. Put a screw into each hole.<br /><br />4. Screw the alumnium bar to the pine board so that the open end of the notches faces the bar.<br /><br />5. Adjust the depth of each screw to the gap you want to test.<br /><br />6. Pull the plugs out of the motor and put each plug wire on the screw heads as if they were attached to a plug tip. Attach the ground clip from the bar to a good ground on the motor.<br /><br />7. Test away.<br /><br />Sketch this out on paper as it is much simpler than I have described it I think.<br /><br />Mine looks as Mickey Mouse as they come but it works and didn't cost me a dime.
