I think I found my coolant leak, but still need your help - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 09-01-2004, 04:15 PM   #1
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Default I think I found my coolant leak, but still need your help

Pulled the blower. Looks fine inside the blower, no traces or odors of coolant in the blower or intake manifold. I got a better view of the coolant lines on the passenger side of the lower intake with the blower off. I can see that the line closest to the firewall is leaking. It was leaking while the motor was running last week and I couldn't exactly see where the leak was coming from. All I could tell was that the area around those two hoses was pooled up with coolant and it was just streaming right down the side of the motor like a damn faucet. That was leading me to beleive it was a possible head gasket becasue of the area underneath the car where it was streaming out, but apparaently I'm ok with the HG (finger'* crossed).

Now, how do I go about fixing this leak? How do you remove the metal tube with the 90 bends in it? Again I'm referring to the "other coolant line", not the the one that comes out of the top of the waterpump. I can see that the tube looks cocked to the left just a bit and the black seal (what used to be a seal anyways) is broken and the coolant is seaping out from on the bottom side of the tube as it goes into the intake (that'* why I couldn't see where the leak was coming from when everything was back together). I verified this leak by spinning the waterpump by hand and observing how the coolant was re-appearing under this pipe as I spun it (I had dried it up just before this, then the coolant came back). Now call me dumb, but is this the BYPASS hose everyone talks about or is that the one to the right of it that goes to the pump? Anyone ever had to replace the one that I am referring to?

Thanks in advance.
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Old 09-01-2004, 08:59 PM   #2
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Anyone???
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Old 09-01-2004, 09:01 PM   #3
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o0o0o, Hey guys, How to you swap out a heater hose in that thing?
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Old 09-02-2004, 11:10 AM   #4
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It sounds like you're talking about the heater lines. If that'* the case, I'm not sure about the '95, but on the '92/'93, there are 2 of them and those metal lines transition to rubber hose and then go to the heater core.

The seals on those 2 metal lines are rubber o-rings. To remove a metal line, remove the bolt that holds the curved metal clamp arm in place and wiggle the metal line out of the coolant passage.
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Old 09-02-2004, 01:38 PM   #5
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That'* what it sounds like to me. Can you post a pic? And point out the leak location for us?
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Old 09-02-2004, 09:07 PM   #6
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Quote:
Originally Posted by willwren
That'* what it sounds like to me. Can you post a pic? And point out the leak location for us?
Well, I am almost certain it'* the heater line. I just remembered something today. Right before this happened, I was trying to put a new PS/Alt. belt on and I think I rapped the socket wrench/prybar thing I had against that pipe in the process becasue it slipped out of my hand when trying to move the tensioner down. Just after I got the belt on, I started the car up and bam, coolant leak. Now that I have gotten a good look in there this week, I noticed that pipe is crooked now and loose. So I think I've drawn a good conclusion. I went and got a new heater seal (aka O-ring) for the pipe and plan on fixing this crokked pipe, finishing my coupler changeout, and firing her up. I think the conincidence of seeing some whitish smoke last time it ran could have just been condensation since the car had sat for about a week before I touched anything.

I'll let you all know how it goes. Thanks for the help.

BTW, that heater pipe is supposed to be straight right? Mine is just a bit coked to the left from me banging it I think.
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