"Remove the carburetor face pl
"Remove the carburetor face plate so that you can actually see if the choke buttereflies are closing when engaged with the electric solenoid.
Check the compression on all cylinders. What are the readings?
With the spark plugs removed, doe the spark jump a 7/16" gap on all cylinders with a strong blue lightning like flame? The 7/16" gap is important, do not attempt to use the spark plugs for a spark test.
(Spark Tester - Home Made)
(J. Reeves)
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 the!y 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
http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store
If all of the above checks out properly, the usual cause of a problem such as yours would be due to fouled carburetors, in which case, remove, clean, and rebuild them using new complete carburetor kits.
Let us know the resuls of the tests."
