Re: Evinrude 4hp Compression Testing

[willyboy]

Thanks fleetwin and Frank,in either case with a spare guage and multiple pulls I have 50lbs. pressure in each cylinder after I gave each a short shot of pb blaster,dry they read 30lbs.. Looking at this one as another learning experience as this one has a few issues. Decided to pull the head and check replace the gasket,of course 1 of the 6 head bolts is stuck fast. Tried some heat and no go so sprayed it up with some pb blaster and letting it soak. In the mean time I’ve pulled the flywheel and found a cracked coil and dirty points to go along with the low compression.