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Posted: Wed Oct 05, 2011 7:40 pm
by larryeddington
I would suggest a cylinder leakage tester, available at a reasonable price from Harbor freight.
They are also slangly called a blow down gauge. To use put cylinder at TDC then using compressed air set gauge at 100% open to cylinder via spark plug hole, as I recall should retain about 80%. if not you can listen to oil fill for air leakage, exhaust for valve there, carby for leakage on intake side or at thermostat/heatexchanger. any bulbles there are either head gasket or cracks.
They are good diagnostic tools for issues such as yours. Of course you have to do all 8 cylinders.
Posted: Thu Oct 13, 2011 1:41 pm
by Heefus
I am dumb.
Pulled the recirculating water pump today (I wasn't about to order a long block without checking) and, sure as ship, there was a pencil sized hole in the cover.
Now I need to find a new one, and get her in.
Fingers crossed, but I am fairly confident that this is the issue, rather than a cracked block!
Posted: Thu Oct 13, 2011 4:25 pm
by larryeddington
heefus. Saw this once in an olds I had. The timing case was the back of the water pump and had eaten through, water in crank, put on new one fixed, I should have thought of it. If you need a timing cover, got two extras for 318s.
Olds dealership diagnosed it and went right to the problem and I was on the road away. However the timing housing was mad of aluminum not cast iron like these 318s.
Posted: Fri Oct 14, 2011 9:34 am
by Heefus
pm'd you Larry
Posted: Fri Oct 14, 2011 11:56 am
by prowlersfish
Some 318 had aluminum timing covers .
Posted: Fri Oct 14, 2011 12:28 pm
by Heefus
This one is cast iron, as are the ones I have looked up online. Just trying to track one down now, so looks like this weekend is out
Posted: Fri Oct 14, 2011 1:10 pm
by vabeach1234
Posted: Fri Oct 14, 2011 1:18 pm
by larryeddington
mine are cast iron. no message came through, sent you one
Posted: Fri Oct 14, 2011 1:32 pm
by Heefus
still no message...maybe we are cursed?
Posted: Fri Oct 14, 2011 1:46 pm
by larryeddington
got your PM and have replied.
Posted: Sun Oct 16, 2011 5:22 pm
by larryeddington
Hi Heefus,
Have sent you a PM with pics and awaiting your response regarding 318 covers.
Posted: Fri Nov 04, 2011 5:09 pm
by Heefus
Thanks to Larry, the boat is running again!
Finally got her all buttoned back up again yesterday. Naturally, every hole fought me, every bolt dropped out of the bottom of the box, and I bled everywhere
The carb needs to be cleaned out, she doesn't like idling at the moment, but other than that we are in good shape.
Posted: Fri Nov 04, 2011 5:52 pm
by larryeddington
Great news now go get dem fish! Oh and for real, boats are knucklebusters for sure. Fiber glass and knucks don't mix very well.