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Mystery coolant leak -help needed #3138155
04/15/23 09:50 AM
04/15/23 09:50 AM
Joined: Aug 2006
Posts: 577
Michigan
Whitey Nocar Offline OP
mopar
Whitey Nocar  Offline OP
mopar

Joined: Aug 2006
Posts: 577
Michigan
I have a 2017 Megacab 6.4. Drove it a couple weeks ago, 2 days ago I got home from work and noticed a puddle under it. Has coolant dripping from several locations. Front and passenger side of oil pan near gasket, along the bottom of the steering stabilizer, where the motor and trans meet- just at the bottom, dripping off a wire harness next to oil pan.
Put my inspection camera in every nook and cranny I could get it to and no signs of the cause. Another weird thing is my oil level is high. I have always changed oil on time if not sooner and always used 7 quarts of pennzoil 0-40 ultra platinum, and it has never been overfilled. Oil is darker than normal too. Not sure if that might be because since it hasn’t been my daily driver for a year and a half and oil isn’t changed as frequently, or coolant is getting in the oil, which I’m guessing would have something to do with a head gasket?
Thoughts on this?
Oh and it has 110,000 miles

Re: Mystery coolant leak -help needed [Re: Whitey Nocar] #3138184
04/15/23 12:06 PM
04/15/23 12:06 PM
Joined: Jan 2011
Posts: 15,864
Central Florida
larrymopar360 Offline
Stud Muffin
larrymopar360  Offline
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Joined: Jan 2011
Posts: 15,864
Central Florida
Strange because head gasket would normally produce milky substance on dipstick and not darker oil, and exhaust smoke. I'd check my PCV system too although this wouldn't normally produce a leak.

I'd look up top first. So many leaks start at the top and run down and sometimes searching at the top of the engine is forgotten.


Facts are stubborn things.
Re: Mystery coolant leak -help needed [Re: larrymopar360] #3138208
04/15/23 01:10 PM
04/15/23 01:10 PM
Joined: Sep 2014
Posts: 1,407
Central Pa
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moparjim79 Offline
pro stock
moparjim79  Offline
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Central Pa
Top off your coolant and report back. I'm curious how much has been lost. Your truck probably has some tow/HD coolers added as well(like an oil cooler)...

Re: Mystery coolant leak -help needed [Re: Whitey Nocar] #3138403
04/16/23 11:22 AM
04/16/23 11:22 AM
Joined: Jan 2003
Posts: 554
Mesa , Az
Jambbii Offline
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Jambbii  Offline
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Posts: 554
Mesa , Az
I'd check out the EGR cooler. It's under the intake manifold and has some coolant lines running to it. From my research (I was looking to possibly delete it) it seems that these can leak an be a pain to spot.


70 Challenger
1960 Town Wagon P Pump 24v cummins project
06 Mega 3500 Drw 2wd
12 Durango R/T
18 Power Wagon
67 A100
Re: Mystery coolant leak -help needed [Re: Jambbii] #3138603
04/16/23 10:50 PM
04/16/23 10:50 PM
Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
Twostick Offline
Still wishing...
Twostick  Offline
Still wishing...

Joined: May 2003
Posts: 6,562
Downtown Roebuck Ont
Originally Posted by Jambbii
I'd check out the EGR cooler. It's under the intake manifold and has some coolant lines running to it. From my research (I was looking to possibly delete it) it seems that these can leak an be a pain to spot.


Gas engine with an EGR cooler?

Kevin

Re: Mystery coolant leak -help needed [Re: Twostick] #3138932
04/18/23 08:53 AM
04/18/23 08:53 AM
Joined: Jul 2009
Posts: 794
massachusetts U.S.A.
1
1969ronnie Offline
super stock
1969ronnie  Offline
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1

Joined: Jul 2009
Posts: 794
massachusetts U.S.A.
wave Agree , It sounds like the EGR Cooler under the Intake Manifold or hoses / Tubes feeding it are leaking Part # 4227647AF . Yes , EGR Cooler on a Gas Engine . drive Ronnie edit fat fingers Part # 4627647AF

Last edited by 1969ronnie; 04/18/23 09:08 AM.
Re: Mystery coolant leak -help needed [Re: 1969ronnie] #3139108
04/18/23 08:28 PM
04/18/23 08:28 PM
Joined: Aug 2006
Posts: 577
Michigan
Whitey Nocar Offline OP
mopar
Whitey Nocar  Offline OP
mopar

Joined: Aug 2006
Posts: 577
Michigan
Thanks for the advise everyone. I looked again and the thing is still dripping. The main drips coming from the crank pulley area, which made me think possible water pump issue, but looks dry around water pump… at least the parts I can see.

I think this is going to the dealership, and I’m gonna see if they honor the Lifetime warranty I paid for. I expect they will if it’s a water pump or get cooler.

I will report back

Re: Mystery coolant leak -help needed [Re: Whitey Nocar] #3139241
04/19/23 11:20 AM
04/19/23 11:20 AM
Joined: Jan 2011
Posts: 15,864
Central Florida
larrymopar360 Offline
Stud Muffin
larrymopar360  Offline
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Joined: Jan 2011
Posts: 15,864
Central Florida
Originally Posted by Whitey Nocar
Thanks for the advise everyone. I looked again and the thing is still dripping. The main drips coming from the crank pulley area, which made me think possible water pump issue, but looks dry around water pump… at least the parts I can see.

I think this is going to the dealership, and I’m gonna see if they honor the Lifetime warranty I paid for. I expect they will if it’s a water pump or get cooler.

I will report back
It can be really difficult to see the weep hole area. See if there's any wobble to the water pump pulley. A lot of time there be a wobble to the pulley about the time they start leaking.


Facts are stubborn things.
Re: Mystery coolant leak -help needed [Re: larrymopar360] #3142840
05/06/23 02:10 PM
05/06/23 02:10 PM
Joined: Aug 2006
Posts: 577
Michigan
Whitey Nocar Offline OP
mopar
Whitey Nocar  Offline OP
mopar

Joined: Aug 2006
Posts: 577
Michigan
It was the water pump. MaxCare warranty covered it. Apparently the coolant line to the egr was also frozen to the water pump so they replaced that I’m told, as well as a lower radiator hose.
Thanks for the input everyone.







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