engine runs on 2 cyls.has no power. check compression and all 4 are 120psi check spark and all have strong blue arc. funny thing is it seems to only be running on the two top cyls believe its #1 and #2<br />can pull plug wires off bottom cyls. believe #3 and #4 and motor keeps running on two top cyls. but if I pull plug wire off either one of the top cyls the motor will cut off. like I said have good strong spark on all cyl. there is just no change on 3 and 4 cyl.<br />plugs are new and firing <br />can someone help me figure out whats going on<br />mabe something wrong with power pack I have a single neon tester but book uses a much nicer 4 wire tester and im a little confused.<br />thanks in advance robbie
