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Drain plug problem

 
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Old 02 Oct 2017, 05:02 am
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Default Drain plug problem

I was about to drain the cooling fluid but nothing happens when I unscrew the plug at the bottom of the radiator. It turns 1/4 of a turn and I can't pull it out. I opened the fill cap and ran the motor.

I did this six years ago but can't see I'm doing anything different now.
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Old 02 Oct 2017, 06:37 am
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Default Re: Drain plug problem

Quickest way is to remove the lower radiator hose. Then remove the thermostat.
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Old 02 Oct 2017, 06:38 am
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Default Re: Drain plug problem

Probably. But why must I remove the theromostat?
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Old 02 Oct 2017, 06:44 am
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Default Re: Drain plug problem

I'm guessing you're doing a flush and fill on the antifreeze? If so, you need to remove the thermostat and put in a new one. And that way, you'll know you have flushed all of the old out when you do the flush.
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Old 02 Oct 2017, 01:00 pm
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Default Re: Drain plug problem

Don't try to remove the drain plug (petcock) from the radiator, 90% chance you'll ruin it and wind up having to go out and buy a replacement.

Ask me how I know



Then you will go to the Chrysler dealer and pay $9 for a replacement and maybe later find out that you can get the exact same replacement for $4.99 at O'Reilleys



Don't worry, if you try to remove it again, you'll ruin it again but since you have an extra, you can replace it again. By that time, you'll figure out that you should have listend to the folks here and simly removed the lower hose.

The petcock was designed not to be removed, but simply turned 1/4 turn allowing the fluid to drain out of a tube on the bottom side of the drain spout.



When I replaced my radiator and took a closer look at the drain area, that hole was never drilled out so there was no way for the fluid to drain out of the bottom pointing tube. Wonder what genius decided on that for the Gen2 PT's.

Anyway, just remove the lower hose, deal with the slightly messier method and leave the "drain plug" alone.
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Old 02 Oct 2017, 01:14 pm
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Default Re: Drain plug problem

Quote:
Originally Posted by dynaflux View Post
I was about to drain the cooling fluid but nothing happens when I unscrew the plug at the bottom of the radiator. It turns 1/4 of a turn and I can't pull it out. I opened the fill cap and ran the motor.

I did this six years ago but can't see I'm doing anything different now.

What rocket said.

If you do want to use the drain, start a few days earlier and work it backwards and forwards with WD40 first or it is odds on to shear. It's plastic, likely never been used and been subject to all sorts of temperature variations etc etc.

Fully open is about a 1/4 to half turn, and a mouse can piss quicker. If you can stand the mess - use the hose.
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