frezze plug in engine block leaking
#1
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Year: 1999
Model: Cherokee
Engine: 4.o
frezze plug in engine block leaking
i have a 99 jeep cherokee 4.0 and i just changed water pump raditor and t stat and rad cap but when doing it i was filling it up and notice it pouring out a frezze plug on the side of motor what would make this happen it been overheating bad and is is easy to replace
#2
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Year: 1993
Model: Grand Cherokee
Engine: 4.0L Laredo
Freeze plugs are there to 'hopefully' pop out when water in your block freezes. Running proper coolant virtually eliminates that ever happening. I doubt if overheating could possible build enough pressure to pop one out. It's more likely rusted out. They're easy to replace if they are easy to 'get at'. Pry it out, take it to auto parts and get a shiny new brass one. They don't rust. Hope this helps
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Year: 1998
Model: Cherokee
Engine: 4.0L
You should try to replace them all.
While you have them out, try to use an old wire coat hanger to get all the rusty metal shavings out of the water jacket. A garden hose will help flush the stuff out, but don't let the water freeze.
Those rusty shavings are from factory machining, and are probably why it was running hot.
One more thing, I use a 1/2" drive socket that just fits inside the plug to carefully drive them in.
While you have them out, try to use an old wire coat hanger to get all the rusty metal shavings out of the water jacket. A garden hose will help flush the stuff out, but don't let the water freeze.
Those rusty shavings are from factory machining, and are probably why it was running hot.
One more thing, I use a 1/2" drive socket that just fits inside the plug to carefully drive them in.
#7
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Year: 1999
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when i find new plugs do they just go in dry i have a socket that just fits the lip do i just tap them in flush what holds them in thanks
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#9
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Some people use a little RTV around them, I personally use Loctite 272 retaining compound. Spend the extra money for Brass plugs, they seal better, and won't rust out. Try NAPA or Carquest they may have the brass ones, worse case call a local machine shop they may have them. They are 2.012" Dia, also they are often refered to as expansion plugs just in case you didn't know.
#10
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Year: 1999
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thanks nobody has the auto zone or advance calling napa and dealer ship tomarrow trying to beat the storm coming hopefull i can find them in the am
#11
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Year: 1999
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will it matter if they are a little deeper they did not have the shallow ones i got 2 in but the others are harder to get in and any tricks to getting them in
Last edited by bigjeff; 02-29-2012 at 08:05 AM.
#13
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Year: 2000.1999,1996
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You did clean around the edge of the hole's right?Like above a bit of rtv works, use a driver the same diamiter as the inside of the plug and drive them straight in example brass drift,socket etc, no pointed or sharp edge driver should be used.
What part of N.Y you live in?
What part of N.Y you live in?
#14
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Year: 1999
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kingston ny yes i did clean around hole i replaced the 5 in the side of block only 1 was bad and the i put it all back toghter and now its leaking from the back of the block i did not now there was a plug back there this sucks
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