Re: desil engine frozen up

Posted by txgrn on June 30, 2005 at 04:51:25 from (209.151.118.189):

In Reply to: desil engine frozen up posted by sharp4691 on June 29, 2005 at 21:42:35:

Most problems are with rusting of the cylinder walls. Therefore you want something you can inject into the "injector hole" and fill up the cylinders.

I use Marvel Mystery Oil (solvent) diesel and penetrating oil in whatever combinations I can get my hands on. You can squirt it in with a spray bottle or pour it in or whatever you want. My preference is a good quality penetrating oil in a spray can.

Also I'd drain the oil and put in about 10, yes 10 or so quarts of 5w 30 el cheapo oil to allow the crank shaft bottom to sit in oil. wouldn't hurt to put a large bottle of MMO (or quart of diesel) in there with the oil to help soften up any problems there.

2 years is not a very long time and unless the engine was submerged in water you shouldn't have much of a problem.....surprised you have any problem. Sure you don't have something else causing the engine to "appear" to be stuck?

You can get a good quanty of penetrating oil into the cylinders and try to at least get a good solid level on top of the pistons. The piston the farthest down will have the most rust but will also allow you to inject the most solvent. A spray can (several)of penetrating oil (not wd 40, penetrating oil)works great as the mist helps to get oil all over the cylinder walls.

Also remove the valve cover and give everything you can see that moves a thorough dousing with penetrating oil....including the springs...you are after the valve stems under (inside) the springs where they enter the head.

Let her sit overnight and the next morning jack up the right rear tire off the ground. Put the tranny in the highest gear you can, 4th in Hi range for an 8 speed. Spray it again with penetrating oil.

Grasp the right rear tire with your hand (a helper wouldn't hurt) and rock back and forth pushing as hard as you can against the resistance. At first all you will feel is the clunk clunk of the tranny gears going back and forth, but keep it up.

In time (depending on degree of rust) the wheel should start the engine to moving. I usually watch the fan blade and you will see a slight quiver. Keep rocking. Then a bigger quiver and all and finally it will (should) allow you to roll it over.

Roll it through a few times and in doing so the stuff in the cylinder will come out the injector hole.

Once loose, put the valve cover back on, pour some diesel down the cylinders to flush out what's in there (and rotate the engine to push it out). Drain the crankcase and install diesel oil to the proper level and install a new oil filter.

I'd spin her over a bit before I reinstalled the injectors to give everything time to loosen up before you put the compression pressure on the starting circuit.

Then reinstall your injectors and bleed then get after getting her started. Just remember you have to have all the air out of the fuel supply circuit for it to operate properly and that usually takes time and lots of trips up and down the line.

Just remember to give your starter a break. Have to do this intermittently so you don't overheat it.

Good Luck,

Mark

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