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water pump leaking, still driveable? #5421848 05/05/20 04:56 PM
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motor_oil_madman Offline OP
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I know they have a wheep hole that allows the coolant to start leaking out letting you know the pump is going out, but does this mean the vehicle shouldn't be driven until a new pump is installed? Mine has gone from no noticeable leak, to a 12" diameter puddle of coolant on the ground that develops about 30 minutes after shutdown. I'm just concerned the pump is going to suddenly fail and the engine is going to pump all its coolant out within 2 minutes going down the road. I went ahead and had a new pump overnighted so my buddy can help me install it tomorrow morning. It's only been leaking a few days I park in the same spot everyday, but it's definitely getting worse. Kind of a bummer I had to spend $45 bucks on shipping to get it here, but I don't want to ruin my engine, this truck is my only vehicle.

The truck is a dodge ram cummins diesel, looks like my profile signature isn't their anymore.

Last edited by motor_oil_madman; 05/05/20 04:56 PM.

2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5421855 05/05/20 05:02 PM
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Snagglefoot Offline
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You caught it just in time. smile


If you want the job done right......do it yourself.
Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5421874 05/05/20 05:27 PM
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motor_oil_madman Offline OP
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well it's not fixed yet, still have to drive it around a bit more.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5421878 05/05/20 05:35 PM
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Jake_J Offline
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The weep hole is the early warning, you can keep driving the truck as long as you keep an eye on the coolant level. But with a 12" diameter puddle yours is a little more than a tiny leak, so I wouldn't take it on any trips out of town.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5421882 05/05/20 05:37 PM
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oldhp Offline
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Anti-freeze going thru seal leaking out the weep hole will ruin the bearing. Bearing could lock up if left long enough. Change it as soon as possible, fan going into radiator ain't good.


"None of us are getting out here alive...drink that beer...eat that pizza...drive that Hot Rod"
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Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5421892 05/05/20 05:44 PM
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motor_oil_madman Offline OP
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Yeah i'm keeping a close eye on the overflow bottle and adding as necessary.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5421895 05/05/20 05:47 PM
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motor_oil_madman Offline OP
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Now I know why the ac compressor always has had oil on it. I guess they periodically seep a little here and there over the years.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5421993 05/05/20 07:51 PM
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Chris142 Offline
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Until the bearing locks up and the fan comes off and goes through the radiator or breaks the timing belt and eats the valves.


02 Wrangler Napa high milage 10w40
87 F250 Valvoline 15w40
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Can am Maveric edge 5w40
57 case tractor Chevron sae30
Re: water pump leaking, still driveable? [Re: Chris142] #5422028 05/05/20 08:29 PM
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motor_oil_madman Offline OP
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Originally Posted by Chris142
Until the bearing locks up and the fan comes off and goes through the radiator or breaks the timing belt and eats the valves.


I see. My water pump isn't connected to the fan, but it is driven by the belt.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5422050 05/05/20 08:46 PM
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2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5422076 05/05/20 09:03 PM
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clinebarger Online Content
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Why would you mail order a water pump for a ISB Cummins? I guarantee Cummins Southern Plains in Houston has a OE pump in stock. Just don't walk in there without the Engine Number!


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: water pump leaking, still driveable? [Re: clinebarger] #5422086 05/05/20 09:11 PM
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motor_oil_madman Offline OP
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Originally Posted by clinebarger
Why would you mail order a water pump for a ISB Cummins? I guarantee Cummins Southern Plains in Houston has a OE pump in stock. Just don't walk in there without the Engine Number!



Because Houston is big and I'd prefer not to drive 45 minutes each way into Houston with a bad water pump and be on the side of I-10 or I-45.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5422089 05/05/20 09:16 PM
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motor_oil_madman Offline OP
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On the north 610 loop. I'll keep them in mind for next time though.


2007.5 dodge cummins 6.7 liter. Chevron Delo400 15w40. 7000 mile or 250-300hr intervals.

Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5422169 05/05/20 11:16 PM
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clinebarger Online Content
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Originally Posted by motor_oil_madman
Originally Posted by clinebarger
Why would you mail order a water pump for a ISB Cummins? I guarantee Cummins Southern Plains in Houston has a OE pump in stock. Just don't walk in there without the Engine Number!



Because Houston is big and I'd prefer not to drive 45 minutes each way into Houston with a bad water pump and be on the side of I-10 or I-45.


I've been to Houston more than a few times, It's not any larger than the Metroplex (DFW).....I think DFW is the most populated metropolitan area in Texas?


2001 Chevy Camaro L92/4L80E
2006 Chevy 2500HD LBZ/Allison 1000
2010 Toyota Corolla 2ZR-FE/U341E
2000 Toyota Avalon 1MZ-FE/A541E
Re: water pump leaking, still driveable? [Re: motor_oil_madman] #5422269 05/06/20 05:37 AM
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Lubener Offline
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Originally Posted by motor_oil_madman
I know they have a wheep hole that allows the coolant to start leaking out letting you know the pump is going out, but does this mean the vehicle shouldn't be driven until a new pump is installed? Mine has gone from no noticeable leak, to a 12" diameter puddle of coolant on the ground that develops about 30 minutes after shutdown. I'm just concerned the pump is going to suddenly fail and the engine is going to pump all its coolant out within 2 minutes going down the road. I went ahead and had a new pump overnighted so my buddy can help me install it tomorrow morning. It's only been leaking a few days I park in the same spot everyday, but it's definitely getting worse. Kind of a bummer I had to spend $45 bucks on shipping to get it here, but I don't want to ruin my engine, this truck is my only vehicle.

The truck is a dodge ram cummins diesel, looks like my profile signature isn't their anymore.

The leak won't get any better with time. What puzzles me is why someone would pay $45 for overnight freight on a water pump when you could have procured one locally which would be equally as good???? Then ask if it is still drivable. Doesn't make sense to me.

Last edited by Lubener; 05/06/20 05:41 AM.

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