www.iFourWinns.com

Hello all,

I am attempting to change the plugs in my 170 MMR Mercury Marine 224 CID 4 cylinder in my 85 195 Horizons. I can get #1,2,3 out no problem (although I think they gave me the wrong plugs RC12YC not RC9YC, what is the difference?). Either way, I cannot get the #4 plug out because of the shape of the exhaust manifold.

Anyone have a trick for this? I tried a swivel plug socket and that worked on the others, but not #4.

Lastly, I seem to have an odd power pack combo, 224CID 4 cyl and Alpha drive. I can't find my serial # anywhere on mercruisers cross reference.

Very poor design...

_________________
Don't forget the plug....
.......Don't ever forget the plug......

assuming you are using an extention shart and plug socket, try putting the socket on the plug and then putting the shaft in the socket.

Use a spark plug socket that has a 6 point end. Thus allowing the use of an end wrench to turn it.

_________________

H210SS 6.2
F150 Platinum

That is what I was going to try next. That will prolly work.

THanks

_________________
Don't forget the plug....
.......Don't ever forget the plug......

Got it by using a plug socket and with a open end wrench. Kinda stupid design of the exhaust manifold.

_________________
Don't forget the plug....
.......Don't ever forget the plug......