johnson v-4 overheat

XWrench2

XWrench2

Recruit
Joined
May 24, 2011
Messages
3
my freind has a 1963? (engine #'s are V4AL-16D / S/N 2399583 ) johnson v-4 motor that overheats. one cylinder is down to 65 pounds of compression. will a blown head gasket cause one of these to overheat?
 
B

boobie

Supreme Mariner
Joined
Nov 5, 2009
Messages
20,826
Re: johnson v-4 overheat

Yes. What's the compression on the other cyls??
 
S

smperformance

Recruit
Joined
Jun 15, 2011
Messages
2
Re: johnson v-4 overheat

Replace both head gaskets. Check the plugs for traces of water and you will no its the head gaskets. I just changed mine and they were both gone. Make sure you get a gasket kits that comes with the 4 black pieces of hose that route water around head. They will be bad too. Got my kit on ebay for $20.
 
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