Posted by ScottyHOMEy on February 16, 2009 at 15:11:29 from (71.241.194.79):
In Reply to: Penetrating Oil posted by Tom 43 on February 16, 2009 at 14:15:17:
Every body has their favorite brand but, in it's place, it works. It's place is in loosening chemical bonds.
For something that is stuck because it was quite simply wound down too tight, it's of limited if any use at all which I think (I'm never sure with Dick!) what he was referring to. In the case of the oil drain plug, those threads were sufficiently lubricated when the plug went back in. If the plug is stuck it's because some gorilla over-torqued it and penetrating oil ain't gonna help a bit.
If it's stuck because it hasn't been touched since the tractor was assembled 60 or more years ago, it can help. Rust is porous, and it's those pores that the stuff penetrates and wicks through to get some lubricant into the threads. I've been known to heat things up first and, after they've cooled down some but still considerably warm, to then apply whatever is at hand. You can watch a puddle of it draw in as the piece cools.
As far as spark plugs with crush gaskets(or without, too, I guess), it's a tossup in my mind as to how well it would work. Can't hurt, might help. Even if they were torqued to spec when installed, they stay in a lot longer these days than they used to and corrosion on the outside isn't that unusual anymore, especially if you live where they salt the roads, so a little jungle juice might help break up anything that might be binding the gaskets to the plug or to the head, as well as anything that might corrode where the plug meets the head.
It's more common and effective use is for things that are stuck from obvious or not so obvious corrosion.
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Today's Featured Article - Tuning-Up Your Tractor: Plugs & Compression Testing - by Curtis Von Fange. The engine seems to run rough. In the exhaust you can hear an occasion 'poofing' sound like somethings not firing on all cylinders. Under loaded conditions the tractor seems to lack power and it belches black smoke out of the exhaust. For some reason it just doesn't want to start up without cranking and cranking the starter. All these conditions can be signals that your unit is in need of a tune up. Ok, so what is involved in a tune up? You say, swap plugs and file the points....now tha
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