Initial timing hint and water/oil question

[Mahoney]

Got an old mid 70's Cobalt with a GM OMC 225 V8 that had been sitting in storage for 5 years, not properly stored. Good news it is running now, quite well too.<br /><br />After having multiple problems with timing I decided to do a static timing. After turning over engine to have the timing mark on flywheel roughly where it is supposed to be I popped the distributor off to see I had it 90 degrees off! Ouch. I then, with the motor off and ignition on, put the cap back on and used a voltage meter connected to 12 volt lead and turning the distributor to see exactly when the points opened and tightened the ditributor down. Turn key and Varrooom! Perfect.<br /><br />Problem now. Lots of nasty chocolate shake oil. I am not going to panic yet, it is an old engine and things have been sitting for 5 years. I am pumping out the old oil and was going to run some used motor oil through it a few times to flush it out and check for more water before adding good stuff. I was told that adding some transmission fluid as well would help in this process of flushing it out. Does anyone have any tips/ hints at what to look for in this process? What pump to use? I am using my neighbors old medical cystalic pump, which works but is very slow.<br /><br />Any help would be much appreciated.

 

[tommays]

Re: Initial timing hint and water/oil question

i got a pump at the auto store that was for a car but had the right size hose to draw the oil out and it was doubble acting (pumped on the push and pull)so it drained 5 quarts in about 10 min or less<br /><br />the best thing you can do is just keep changeing the oil and running the motor for a bit and doing this until it gets clean<br /><br />was the oil just dirty or was the dip stick really overfull when you change it you need to see if water is still getting in from some were<br /><br />tommays

 

[Mahoney]

Re: Initial timing hint and water/oil question

Oil was very full as indicated by dipstick, however after thinking about it, when the boat came out of storage water was sitting in the intake manifold, and 2 intake valves were open letting water into the combustion chamber of those 2 cylinders, which is how all the water got in there I am sure. Hopefully a few changes will take care of it, as the engine sounded nice when it was running for a minute or so. I added some sea foam when started to lubricate and start burning off carbon in the chambers, so that should help

 

[Scaaty]

Re: Initial timing hint and water/oil question

Do a compression check...those rings could be froze from water intrusion

 

[Blk-n-Blu]

Re: Initial timing hint and water/oil question

Mahoney, Have a look here for more possibilites;<br /> http://www.marinemechanic.com/site/page88.html

 

[Bondo]

Re: Initial timing hint and water/oil question

You don't list a From;.........<br />Where, Exactly, in the World, has this motor been sitting for 5 years ??????<br /><br />Changing the oil Once, Maybe Twice, Should be Plenty.........<br />That,+ some engine Heat, will burn Off any remaining Water......<br /><br />Just How Over Full was the Oil ?????<br />Even the few Seconds you ran it,<br />Could have been with Water running thru it's Veins.........<br />Ya Know, the Oil Pump Pick-up is Low in the base......... And that's Where the Water lays.......<br /><br />Good Luck.....