spark plug info

[Jeffreyi]

1979 volvo penta gm 305 I need to find out the size and gap for my spark plugs. I have two spark plug sockets and neither of them fit the plugs.

Thanks.

 

[Bt Doctur]

Re: spark plug info

Should be 5/8 ths

 

[Bondo]

Re: spark plug info

and neither of them fit the plugs.

Ayuh,... Why not,..?? they're 5/8"...

 

[Bt Doctur]

Re: spark plug info

may have to modify the socket to fit as shown.