Draining Radiator

bcraig · Jul 17, 2016

I found the petcock on the radiator ,1999 Dodge ram 1500 4wd extended cab and turned it but no Liquid comes out.

Is there a trick to this? does the plug come out completely? or just turn to the left to open it?

Joe w. · Jul 17, 2016

I don't think u got to take it all the way out but you may have to I can't remember from the last time I drained mine

avantiguy · Jul 17, 2016

Remember that most petcocks screw in to open. If it doesn't start to flow when truly open, hit it with a little air pressure.

dudeman2009 · Jul 18, 2016

Sometimes sediment can clog that small valve, just take a small tube and put it on the spout coming off and blow into it or use a compressor to fire a quick burst of air into it. Make sure to take the radiator cap off first. If its not off then there will be a vacuum and it wont drain period.

dapepper9 · Jul 19, 2016

Just cracking it open won't quite let it for either. May take a couple spins sometimes

dudeman2009 · Jul 19, 2016

dapepper9 said:
Just cracking it open won't quite let it for either. May take a couple spins sometimes

I had to play with mine the first time I drained it. Took about a minute of rotating it about to get it to flow right. I tried the small dia. rubber hose connected to a compressor nozzle on another Ram.

dodge dude94 · Jul 19, 2016

Just drop the lower hose. lol

Draining Radiator

bcraig

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avantiguy

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dudeman2009

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dapepper9

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