Coolent leak - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 9 (permalink) Old 02-07-2007, 04:52 PM Thread Starter
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Coolent leak

The other day i noticed i had a small coolent leak\puddel under the truck .. I started looking for where the leak was comming from :shrug: and found it. I guess it is a bypass hose that runs right on top the water pump it is 2 steel lines that has 3 inches of rubber 3/8 hose connecting them togather. What a pain to change that 3 inches of hose. It gives you no room to get the clamps off and onece you get them off then trying to get the new hose on is like pounding a square peg in a small round hole it was real hard. but we got it and now the leak is fixed.. Anyone here had this problem? It sucks.

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post #2 of 9 (permalink) Old 02-08-2007, 02:12 AM
 
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pull the fan off and the fan pulley assembly and it is alot easier, not much work to remove it either.

Eric Merchant
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post #3 of 9 (permalink) Old 02-11-2007, 07:09 AM
 
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Coolant Leak on Duramax

I am noticing the same problem on my truck ( 174,000) miles. I am not able to detect it exactly where but it is coming from around where your problem was. I got a micro-fish print out from the dealer I think I am suffering the same problem Any suggestions on something I can put into the cooling system that will help shine light on exactly where this small leak is coming from


Thanks, Vito

P.s. My truck is a 2001 Duramax Silverado 2500HD:shrug:
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post #4 of 9 (permalink) Old 02-11-2007, 01:41 PM
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See Stacked's post for the info. I combined all three "coolant leak" threads into this one.

Since you both have 01's, maybe this is just another thing that'll show up as Dmax's get older.

DmaxalliTech would know for sure.
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post #5 of 9 (permalink) Old 02-11-2007, 03:21 PM
 
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water pump is not uncommon..

Eric Merchant
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post #6 of 9 (permalink) Old 02-11-2007, 03:59 PM
 
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Quote:
Originally Posted by dmaxalliTech
pull the fan off and the fan pulley assembly and it is alot easier, not much work to remove it either.
Eric Do you have any suggestion on how to pinpoint a very small leak
Thanks, Vito with a 01 Duramax:bow:
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post #7 of 9 (permalink) Old 02-11-2007, 11:07 PM
 
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Vito, get ahold of a radiator pressure tester and pressurize the cooling system. This will be the most valuable method of locating the leak

Eric Merchant
www.Merchant-Automotive.com
Zeeland, MI
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post #8 of 9 (permalink) Old 02-12-2007, 05:08 AM
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My dad has an 01' dmax, and there is coolant coming from it too? Water pump got changed just over 2000 miles ago, it could be gaskets because of 45 psi boost

2001 Chevy SB/CC Duramax LB7

Garrett GT4088R from PPE, PPE Duel fuelers, PPE Tuning, PPE stage 4 transmission w/suncoast 1056 converter, PPE Lift pump, Fabtech tie rods, Black Eagle alloys.
Engine is apart and in the garage
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post #9 of 9 (permalink) Old 02-12-2007, 12:41 PM Thread Starter
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If it is the small hose it is hard to see the leak except the top of the water pump will have a small pond of water on it and you can see where it is leaking down the side of the water pump. I thought it may be the water pump until i saw the pond on top the pump. Then i just assumed it was the small hose it was a pin hole in the line. ..After replacing the hose all is good no leaks My truck is 01 at 130000 miles.

1999.5 F250 4x4 super cab 7.3L With edge attituede.
Converter lockup mod and EBPV exaust brake mod.
Air Hog cold air intake. Muffler delete, 35s on centerlines.
New F650 dash upgrade..

1995 F250 Single cab long bed 2wd.


2001 LB7 2500HD SOLD
AEM Brute Force intake, 5 1/2 stack exaust, Diablo Sport Predator Programmer. PPE boost valve, Autolite gauges. Built Allison (Alto steels, Red eagle clutches, Transgo shift kit, transgo lockup valve, and Personal Mods : ) edelbrock 1792 lift pump.


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