I think you have 2 different issues but the engine is not seized. Reply. I'd fill up the cylinders through the spark plug holes and let it sit at least overnight. Before you get out the sledge hammer and a block of wood and start pounding your meat there are a few things to consider. 2) Pick a solution to dump into the spark plug holes -- PB Blaster, Marvel Mystery Oil, Gibbs, Diesel Fuel, WD-40, etc., etc. I squirted "PB Blaster" penetrant into the cylinders, and tapped the pistons lightly daily. Bought 3 cans of Engine Release, followed directions and waiting the appropriate time, and darn if the engine turned right over with a hand crank. First take the spark plug or the igniter out of the head and put the cylinder with the stuck piston and ring in a vertical position. It got LOTS of crap out of there and I think will help the pistons slide once I get 'em moving. Re: Breaking loose a seized engine I extracted the crank out of my Studebaker engine. Thanks and sorry for the lengthy story! PB Blaster is mostly naphtha and petroleum oil and has a preternatural ability to insinuate its way into minuscule spaces. This is the time to soak the piston and cylinder with my mixture of carburetor gum-out and kerosene. The PB Blaster I shot all over the top of the piston was coming out the exhaust port, so the ring is not sealing. Penetrating oils have a low viscosity that enables them to seep between cracks and narrow spaces, leaving an oil film inside spaces. the piston grudgingly moved a bit forcing out some of the mystery oil that had settled below it. can't turn over the engine. « on: 12 March 2009, 08:43 PM » A friend of mine has an old P76, he's actually the father of a guy I used to work with. It would help if I knew the situation a bit better. After watching a few of these videos, I began to hear the name of a familiar product being mentioned over and over (PB Blaster). Once it breaks loose, turn it over by hand a few times and then throw a battery in it. Your email address will not be published. I've used Parts Blaster & Penetrating Oil to free locked up 4 stroke engines on mowers.. can i use this method on two strokes as well? That motor was stuck for at least 10 years . The engine, OTOH, is–at least–stuck. Thats where the penetrating oil for rusted bolts come into play. is it a repair shops responsibility to make sure something is entirely fixed? First take the spark plug or the igniter out of the head and put the cylinder with the stuck piston and ring in a vertical position. ... FYI — after I got it working, I only ran it for a few minutes, and then changed the oil (again) to get the PB Blaster out of the engine as much as I could. can't turn over the engine. I have 5 pistons/rods that are still stuck however. If so click here! I''ve unstuck a couple engines this way. Then leave the plugs out and put a breaker bar on the front crank bolt and give it a push. With reducing agents and anti-oxidants, the oil film left displaces other stored materials, cleaning the insides to help minimize friction and to be loosened freely without needing excessive force. This is the time to soak the piston and cylinder with my mixture of carburetor gum-out and kerosene. Still have questions? (Check out some antique engine forums as you will find all sort of "magic" solutions that have worked for one guy or another.) Put straight household ammonia in a spray bottle. I am a definate fan of PB blaster if that don't break it loose it ain't gonna get loose. If you think your engine is seized, you need to confirm that before doing anything else. Slowly try working the plug loose. I have 5 pistons/rods that are still stuck however. and put in a new pcv valve too. Tomorrow, try pulling on the starter rope. I was wondering if anyone had a better way to free up the stuck pistons so I can knock them out and overhaul the engine. Leave a Reply Cancel reply. 1979 DT100 with a seized engine. Ive got the rockers and plugs out, and LIM off. I decided to test the PB Blaster and Kroil on the motor to find out which one actually worked the best. Hey guys just picked up a 94 XJ6 with the 4.0 and the engine is seized. What condition was the engine left in when last turned over, is there oil in it still, or water? Kano The company boasts of selling its products to 480 of the Fortune 500 companies around the world. I've been dousing them with PB blaster and Marvel Mystery oil. Spray PB Blast in the cylinders and let it sit, have a cup of coffee.... then work the crank back and forth.... it should free up the engine. If there had been a loud knocking noise instead it might be worse (a noise like the piston coming apart.) Im going to dump a bunch of PB blaster down to try and free up the bottom end. I read in the Nov/Dec 99 issue of Antique Automobile how a guy found an old sprint car and after discovering the engine to be seized, he poured Marvel Mystery Oil in the cylinders and down the carb. Tomorrow, try pulling on the starter rope. With the talks about cons of PB blaster, this product is almost perfect; even in the debate between PB blaster vs liquid wrench, PB blaster is far more superior than liquid wrench, with its affordability, consistency and efficient dealing with seized bolts. (Read 7155 times) koan. Sight unseen; had been lying in a field for 3 PA winters and partially grown in. True penetrating oil is sold under many different brand names, including WD-40, PB Blaster, Liquid Wrench, and AiroKroil.This can be a little confusing, especially since brands like the WD-40 offer not only a true penetrating oil but also sell spray lithium or silicone lubricants. The engine is locked up and I told him we could at least pull the injectors and fill the cylinders up with PB Blaster or whatever? let it sit for 24 hours, then try using a breaker bar to turn the engine over. I emptied almost two and a half cans of PB blaster into the the cylinders and let it set for a week and it freed the engine up. The #1-selling penetrant since 1957, PB B'laster quickly busts loose rusted or frozen parts caused by rust and corrosion. Dump some wd-40, ATF, and PB Blaster down each cylinder and let it sit for a few days. Pull on the starter rope. Always love a good engine problem On the small engines most of us are working on you can bet that if you can’t rotate it by hand, it’s probably seized. Thankfully, just because an engine has seized does not necessarily mean that the entire engine … Surprisingly, little in the way of structural rust, seems rebuildable. Im in the process of replacing engines. Oh, and PB Blast will cut carbon. my approach to seized engines that sat in junkyards for 30 years, has always been brute force oriented- remove heads, oil pan, as many pistons/rods as would come out, then grit blast rust above piston, lube, and try to pound out piston- if it didn't come out, then drill a number of large holes in piston top, so piston would collapse when I hit it with 6 foot long pipe and sledgehammer. The #1-selling penetrant since 1957, PB B'laster quickly busts loose rusted or frozen parts caused by rust and corrosion. (was stored dry) still works great. if it does not turn over I would say your screwed. Might just be only one cylinder with the issue. 8. First, you must determine whether the engine is truly seized or locked up, which will require removing the spark plugs. I am a definate fan of PB blaster if that don't break it loose it ain't gonna get loose. (Single cyl, air-cooled, OHV.) I began looking on the internet for "how to fixe a seized motor," but most videos that came up were for larger car and truck motors. The primary role of the penetrating fluid is to loosen a… The old engine is seized so I cant rotate it to get to the TC bolts. 3) Let it … Often seized pistons will free themselves when the engine cools down, but apparently yours didn't do that, so the simplest fix (and the quickest, unless you want to spend a lot of your own time working on it) is "don't bother taking anything apart, just replace the whole engine". I emptied almost two and a half cans of PB blaster into the the cylinders and let it set for a week and it freed the engine up. I got the top part of the the cylinder head off. Re: Is PB Blaster useful on seized engine? Most importantly: 1. Keep us posted on your progress. Take it slow - take out the plug and squirt in some PB blaster and let it soak in. – alephzero Sep 16 '18 at 19:20 The keys to freeing the engine are to reduce the air pressure within the engine's cylinders and to reduce the amount of force necessary to break the piston free by disconnecting the components that the engine turns, such as the alternator and power steering pump. (or at least spun, he said fuel pump) has been out doors about 18 months. Archived. I got this vehicle as payment for moving a piano. So I'll have to replace at least the ring, maybe the cylinder too. Could do a quick blow by test with shop air to get a better grasp of the problem. new jaguar XJ6 seized engine. Thank God winter is coming because if I was in a rush to get this done I'd be really pissed, it's a long ass process! Re: PB Blaster vs. Mystery Oil Anything stuck gets PB Blast first then a lub oil. PB blaster in the cylinders and a day or so!!!! I pulled the injectors but didnt have to pull the drain plug as it was never tightened hence the run out of oil part. Want to build this thing right and have it for a while . Thanks. Engines rarely seize, but when they do, it is almost always due to a long period of nonoperation. Kano Kroil penetrating oil is about the best there is in the market. Car engines with a high-mileage can benefit from the penetrating oil for a seized engine as it will help to protect their moving parts, as well as standing the test of time in not freezing, melting or running off. Or is it dry, without oil? One of its best penetrating oils for seized bolts is the WD-40 Multi-Use Product. Motor looks good, no signs of a lot of use. Normally you let the engine sit for a few days before starting the restoration process. How Should Blaster 16-PB Penetrating Catalyst Be Used? It has some visible rust on it. PB Blaster, Marvin's Mystery Oil, or something else? Try PB blaster about $4.99 I have had good luck with it, get it at any auto parts store, if that doesn't work pull head and pound on pistons with block of … If it's stuck for another reason, say a spun bearing, then perhaps you may have other thoughts of freeing the engine. Used Redlead ( mixture used to clean gun bores) transmission fluid, Marvel Mystery Oil etc and nothing would work. I've been dousing them with PB blaster and Marvel Mystery oil. Was stored in his shed for at least 10 years. For the sake of clarity I will number the cylinders 1-2-3-4. In my experience most penetrating oils (PB Blaster is my personal favorite) work well when dealing with iron oxide (rust). W116 Addict; Posts: 3,316 ; Location: Melbourne; Help with seized / locked up engine. Marvel mystery oil is wonderful stuff. Are you a Vocational Instructor or Student? I like to start the engine and let run for a minute so the head gets hot and spray the lubricant and while the head is still warm, try to remove the stuck plug. Assuming everything is okay with the crankshaft, the easiest and cheapest thing to try is penetrating oil. From what I can tell, the piston is probably OK. I then typed in "how to fix a seized lawn mower engine," and Jackpot! The engine was seized and would not budge. soak the cylinders with a product known as PB blaster. You can also use a butane torch, but it's a little cheaper and easier to go with the propane. I cleaned out all of the Penetrating Oil and Parts Blaster that I'd sprayed into the cylinder and then put maybe 2 cap fulls of 2-cycle oil into the cylinder; it sat for maybe 3 hrs. After removing the water, I took the gallon of PB Blaster and dumped some on top of every piston. Take it slow - take out the plug and squirt in some PB blaster and let it soak in. Join Yahoo Answers and get 100 points today. They are not as effective with aluminum oxide. about 1/5th the time it would take wd-40 to do the same job and in the end a better lubricant as well. The other issue is probably due to a fuel pressure drop, most likely either from running on less than a 1/4 of a tank of fuel or the fuel filter is clogged. He's getting on a bit, 92 I think but he still loves tinkering with his old P76. in reply to Lance, 10-23-2003 09:51:55 I had excellent luck using it on my uncle's siezed wd allis. Backyard's Rating: Check Price. Squirt in some more PB blaster (less evaporative than WD40). This discussion seems to be based on freeing an engine that has seized due to rust and corrosion in the cylinders. Automatic transmission fluid works wonderfully well for dissolving gummed up oils, and it's cheap. Thankfully, just because an engine has seized does not necessarily mean that the entire engine must be rebuilt. It also contains a non-evaporating lubricant that saves time and equipment and protects against further rust and corrosion. in the last week I have freed stuck rings and loosened the Flywheel on the '73 6hp I'm fixing up. All these methods work only on lightly seized engines. Penetrating oils may vary in their properties, but most of them should take effect within 15 minutes or less. Since the engine squeeled and then seized, there is hope. On larger engines you’ll want to use a breaker bar to see if it will turn. I tapped on it a bit with the wood end of a rubber mallet. Are all the cylinders seized or just one or two? Whats the most effective method of un-seizing a two stroke engine? Then leave the plugs out and put a breaker bar on the front crank bolt and give it a push. Is this engine in a car, tractor, field, garage??? In no time, the PB Blaster leaked down the sides of two pistons, around the rings and to the cardboard on the floor. It also contains a non-evaporating lubricant that saves time and equipment and protects against further rust and corrosion. I used some stuff called PB blaster on a 4 cylinder New Holland backhoe that was run out of oil. Also going to Sears to buy a large breaker bar. Step 1. The front main seal is probably what is leaking in the front passenger side of the engine or the camshaft seal on the same side. If there had been a loud knocking noise instead it might be worse (a noise like the piston coming apart.) 5.0 out of 5 stars With PB Blaster and these tips, u can usually remove a seized nut or bolt. I squirted "PB Blaster" penetrant into the cylinders, and tapped the pistons lightly daily. I used some stuff called PB blaster on a 4 cylinder New Holland backhoe that was run out of oil. 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