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Old 02-12-2012, 07:11 PM   #11
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Re: S-10 350 Radiatdor Plug

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Originally Posted by Chicago5 View Post
Man. This is frustrating. I used the plug I removed initially. It pushes in, then turns and tightens. The thing is, it gets a little tighter, then that's it. There is no "catch" or "tight" feeling. Like when you tighten a nut, there is a point when it's tight, and you're done. Know what I mean? When the tab is long ways, it seems to stop leaking. When the tab is upright, it leaks, then seems to keep leaking (although less), when I return the tab to longways. What do you guys think?
It sounds like the threads in your radiator is stripped.
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Old 02-12-2012, 07:51 PM   #12
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Re: S-10 350 Radiatdor Plug

Took the plug out and brought it to O'Reilly's. The small [U]o-ring??[U] was cracked and loose, so that was the problem. When I tried to remove the o-ring, it fell back into the radiator. While searching nomenclature for Radiator Drain Pet ****, I stumbled into a Dodge Cummins forum. A guy did the same thing. The other guys said because of where the o-ring fell into, it isn't a problem. What do you guys say? I just DO NOT want to have to remove the radiator.
I the pictures, you can see the o-ring that fell in.
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Old 02-13-2012, 08:27 AM   #13
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Re: S-10 350 Radiatdor Plug

Should`nt be a problem Tim it will just lay in the bottom...
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Old 02-13-2012, 10:01 AM   #14
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Re: S-10 350 Radiatdor Plug

After reading the thread in the Cummins forum, I was really hoping that would be the case. I also hope the new o-ring (if that's what it's called) will fit snug and hold the plug in tight. Thanks for all the tips here, and I'll do a follow up post.
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Last edited by Chicago5; 02-16-2012 at 05:31 PM.
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Old 02-16-2012, 05:36 PM   #15
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Re: S-10 350 Radiatdor Plug

Thought I fixed the leak. Took it out today and smelled anti freeze the whole time. When I checked, it was dripping a lot. When I checked the plug, it turned real easy and hissed, like air escaping. I gave it a half turn and it felt tight. Can you advise how tight these plastic plugs are? The threads are on the inside of the o ring, and the outside of the plug.

The other consideration was if I didn't push the o ring in right and it's not seated. I can BARELY see what I'm doing, and as usual, I don't want to push to hard or turn to tight.

The first pic is from leaning over the right front tire. The second is the amount of leakage in about a minute. When I gave the plug a 1/2 turn, the leak stopped. But when I first put it in, I got it tight. Would heat affect that???
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Last edited by Chicago5; 02-16-2012 at 05:38 PM. Reason: wrong pic
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Old 02-16-2012, 05:39 PM   #16
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Re: S-10 350 Radiatdor Plug

Warming it up could effect how tight it gets I guess, we`ll wait for a follow up...
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Old 02-18-2012, 11:39 AM   #17
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Re: S-10 350 Radiatdor Plug

There is a post about my S-10 350 that might answer some of this. In the case I have to replace this radiator, besides just knowing the answer to this question, how would I identify what radiator I have? Is it identified as a vehicle type, such as '87 S-10 2.8 L, or Ford F250 Super Duty 7.3 L? Or do radiators have their own ID? Pretty much confusing myself here, so I hope it makes sense to you.
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Old 02-18-2012, 12:22 PM   #18
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Re: S-10 350 Radiatdor Plug

I would take it to a reputable radiator shop, they'll be able to fix you up.
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Old 02-18-2012, 01:50 PM   #19
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Re: S-10 350 Radiatdor Plug

Thanks, Bill. I wish you could have left "reputable" out! Must be enough history where some shady dealings involving radiators earned that label.
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Old 02-18-2012, 02:00 PM   #20
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Re: S-10 350 Radiatdor Plug

Tim...http://www.championradiators.com/page/400669596

go three row...
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