Re: Need some Advice
You cannot check spark by using the spark plugs. Remove both plugs and rig a tester whereas you can set a proper test gap of 1/4". The spark should easily jump the 1/4" gap with a strong blue lightning like flame... a real SNAP!
YOu can use a medium size philips screwdriver stuck into the spark plug spring connector within the rubber boot, then hold the shank of the screw driver 1/4" away from the block, or build the tester mentioned below.
If you have proper compression and spark, what remains is fuel.... and that is usually due to a fouled carburetor that needs cleaning.
(Spark Tester - Home Made)
(J. Reeves)
You can use a medium size philips screwdriver inserted into the spark plug boot spring connector, then hold the screwdriver shank approximately 7/16" away from the block to check the spark or build the following:
A spark tester can be made with a piece of 1x4 or 1x6, drive a few finishing nails through it, then bend the pointed ends at a right angle. You can then adjust the gap by simply twisting the nail(s). Solder a spark plug wire to one which you can connect to the spark plug boots, and a ground wire of some kind to the other to connect to the powerhead somewhere. Use small alligator clips on the other end of the wires to connect to ground and to the spark plug connector that exists inside of the rubber plug boot.
Using the above, one could easily build a spark tester whereas they could connect 2, 4, 6, or 8 cylinders all at one time. The ground nail being straight up, the others being bent, aimed at the ground nail. A typical 4 cylinder tester follows:
..........X1..........X2
.................X..(grd)
..........X3..........X4
