plug wires sparking to engine block

[snagalager]

I just replace a bad timer base,plug wires and plugs and tested boat last night in the dark with the cowl off. I had spark jumping to the engine from the new wires. So i pulled the wires away from the block and the motor still dont have full power. When i touch a screw driver to the engine i see a little spark jumping to it. I have cleaned all grounds and checked all connections. Is there something that could cause too much voltage that would cause spark to jump through the plug wires?

 

[Monte1961]

Re: plug wires sparking to engine block

If you replaced with new wires, then there shouldn't be any except from plug ends. the only thing I can think of is, they have gotten cut some how.!

 

[snagalager]

Re: plug wires sparking to engine block

Is there any way the coils could be shorting to the block through the mounting bolts

 

[DJ]

Re: plug wires sparking to engine block

What plugs did you install?

 

[snagalager]

Re: plug wires sparking to engine block

QL77JC4 champion. My motor is a 1981 90hp evinrude. The stator ohms good. It has a voltage regulator a rectifier and two power packs. Im getting fire on all four cylinders. The plug wires are new. I just put them on. I can only see the spark jumping to the block at night when its dark. Is there a way to test the voltage regulator? My battery dont die so i would think the rectifier is ok.

 

[boobie]

Re: plug wires sparking to engine block

Try a cylinder drop test when running and see if all cyls are equal. You may have other probs seeing you don't have full power.