1 spark checker Fri 27 May 2011, 04:55
Gardell
active member
Two very simple things I used to check ignition.
I cut thru the threads of 2 old sparkplugs (about halfway back) and broke off the insulator leaving the post sticking out, after cleaning things up I put the plugs in the wires for cyl 2 and 3 and measure the total resistance of wires and coil, by attaching the multimeter to the post sticking out of the plug. should b about 20k ohms. Same thing for cylinders 1 and 4
The other thing is to pull all 4 plugs, reattach them to the wires and connect the threaded section of each plug togather with a length of bare solid copper wire. It does not need to connect to the engine just to each other. Crank the enginge there should be a nice fat blue spark.
Sorry no pictures
I cut thru the threads of 2 old sparkplugs (about halfway back) and broke off the insulator leaving the post sticking out, after cleaning things up I put the plugs in the wires for cyl 2 and 3 and measure the total resistance of wires and coil, by attaching the multimeter to the post sticking out of the plug. should b about 20k ohms. Same thing for cylinders 1 and 4
The other thing is to pull all 4 plugs, reattach them to the wires and connect the threaded section of each plug togather with a length of bare solid copper wire. It does not need to connect to the engine just to each other. Crank the enginge there should be a nice fat blue spark.
Sorry no pictures