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oil filler cap stuck??


Old 05-22-2012, 02:43 PM
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Default oil filler cap stuck??

just did an oil change on my truck and could not get the oil filler cap off. has anyone else had this problem?? or have any easy fix's???

i finished the oil change using a syringe down the dipstick tube but as you can imagine, this takes absolutely forever.
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Old 05-22-2012, 04:52 PM
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should just loosen off easy, did you try channel locks or anything on it to try and free it up.
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Old 05-22-2012, 05:29 PM
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i did but don't want to force it and have a bunch of plastic bits fall into my engine. I've tried it hot, I've tried it cold, it rotates a little bit (1/4") but it starts to rotate a little off center.

it's quite bizarre, I've never experienced anything like it but it is the first time I've had a vehicle with so many plastics bits attached to a hot engine.

i may have to remove the intake resonator etc. and see if i can replace the the cap / filler tubes as a whole assembly, from where it attaches to the engine. seems a little ridiculous to have to go through all that for probably the simplest of engine components......
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Old 05-22-2012, 07:05 PM
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Mine is like that. I just use a shop rag and both hands. It lets go eventually.
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Old 05-22-2012, 08:54 PM
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Strap wrench
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Old 05-24-2012, 01:57 AM
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I have to use channel locks on mine from time to time. Hard to do it by hand but with those it lets go very easily.
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Old 05-24-2012, 07:37 PM
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My cap is like that too. Havent had to use channel locks in a while, usually a rag and both hands gets it.
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Old 05-24-2012, 10:39 PM
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Sounds like you need one of these....
I use it almost daily doing oil changes on these mopars... mostly its the Jeeps, but occasionally a Dodge will do it. It is metal, but I've never seen one hurt a cap nor have I had to put the 3/8 ratchet in it.


Last edited by arani rey; 05-24-2012 at 10:43 PM.
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Old 05-25-2012, 11:16 PM
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guess i'll just have to man up and crank it.

thanks guys
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Old 05-26-2012, 09:55 AM
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Let your engine get warm, and while at operating temps, try loosening it then. My car has done this a few times to me. Warming the engine up def helps...ALOT!

I'd recomend cleaning it with a non-harsh chemical. That means no brake cleaner. Use Seafoam if you have it and make sure you lubricate the cap seal with some fresh oil.
Ohh, and clean the filler neck out too. It's prob gunked all up with a film of semi-slimy/hardened parrafin wax.

Last edited by dirtydog; 05-26-2012 at 09:57 AM.
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