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| | | | Joined: Jan 2014 Posts: 74 Shop Shark | | Shop Shark Joined: Jan 2014 Posts: 74 | HI ,soaked it since august 2016.broke it free.(yesterday 1/28/17.)soaked it with diesel.drained it. should i leave it sit for a few days&blow it out with the starter?& then check compression or put oil in the plug holes for a while&do a compression test later?THANKS for any feedback. | | | | | Joined: Dec 2015 Posts: 2,063 Big Bolt Forum Moderator | | Big Bolt Forum Moderator Joined: Dec 2015 Posts: 2,063 | What are your plans for the engine? Just to see if it will run, then pull it all down, or see if you can use it?
Assuming the latter, I would make sure the inside is cleaned out and put some fresh oil in the pan, run the oil pump to make sure the bearings have some oil, and then put a little down each cylinder. Then turn it over by hand carefully a few revolutions to see if it has any stiff spots before I turned it over with the starter and did a compression check.
If you can, after all that, I'd probably start it and run it at a fast idle for an hour or so and do another comp test to see if it loosened anything up. | | | | | Joined: Feb 2004 Posts: 29,829 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,829 | I'd do a little spinning with the starter with the plugs removed, once you're sure there aren't any serious tight spots. Then check the compression "dry" followed by a wet test. Write the numbers down for future reference, and if you do decide to run the engine, repeat the tests after some run time.
I like to run a couple of quarts of Diesel fuel with a fresh fill of 30 weight oil, enough that the oil/solvent mixture is splashed all over inside the crankcase by the spinning crankshaft and rods dipping into the overfilled oil and solvent. It does a much better job of dislodging sludge and crud than hours of scrubbing with solvent and a brush. Just don't drive the vehicle or put any other type of load on the engine, A fast idle, maybe 1000-1200 rpm is plenty to get a good internal wash job. Quite often, an engine that seems to be beyond help comes back to life after a good running flush. If not, you've saved yourself a lot of scrubbing during a rebuild by loosening up the gunk.
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
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| | | | | Joined: Jan 2014 Posts: 74 Shop Shark | | Shop Shark Joined: Jan 2014 Posts: 74 | I have a 54 i found reasonable. this truck i call franken truck it has bucket seats, 4 0n the floor, was a three on the tree.1951gauges in the dash & GMC tail gate. no rust holes in cab or floor . box is welded steel plate floor .ENGINE has super low compression. the motor i spoke of might be in better shape. thanks for reply. BJF | | |
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