coolant leak

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Feb 28, 2004 | 12:05 PM

will-work -for-mud

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From: NC

coolant leak

Hey guys, I definitely have a coolant leak somewhere. Sometimes when I crank my truck up I can hear air bubbles flowing through the lines. When I pop my hood I can smell coolant. Also, when I turn the truck off, I can hear what sounds like coolant hitting the manifold on the drivers side. I changed my plugs and wires about 2 weeks ago and found coolant where the plugs are. The coolant was moslty in #6 but the was some in #5 and #7 as well. There was no coolant on the electrodes which made me feel better about the situation but I still have a leak somewhere. I have been told that there is a coolant line that runs under the lower intake manifold. I looked for it but I couldn't find it. I keep a watch on my coolant level but it doesn't seem to be losing alot but it still does. I checked all around the head and there is no residue of coolant to be found. Does anyone have any ideas?
-Landon

Feb 29, 2004 | 08:36 PM

will-work -for-mud

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From: NC

Hey c'mon guys. I know some of you have to have at least an idea or a place where I can start.
-Landon

Mar 1, 2004 | 12:14 AM

Racerguy

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From: BC, Canada

I'd have to guess that the heater pipe under the intake is leaking.
You cant actually see it, except for a small part at the back where the heater hoses are, unless you remove the manifold.
I would take the truck and get the cooling system pressure tested to see where the leak is.

Mar 16, 2004 | 09:05 AM

jimmyspencer

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I encountered the same problem while replacing the plugs on my 4.6 L. Did you ever find the source of the leak?

Mar 16, 2004 | 07:08 PM

Racerguy

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From: BC, Canada

Wow!! It's Jimmy Spencer

I guess even famous NASCAR drivers like our forum

lol
Welcome aboard

Mar 16, 2004 | 11:39 PM

will-work -for-mud

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From: NC

Hey Jimmy, I am gonna order a pressure tester here soon. I'm up at school right now and am headed home the first week of April. hopefully I will be able to locate it then. I was planning on working on it over my spring break, but puttin a body lift on my little bro's pathfinder took a little longer than expected. I wouldn't of had the time to mess with pulling the injectors and the manifolds. But hopefully I will be able to get to it soon.
-Landon

Apr 12, 2004 | 11:20 AM

jimmyspencer

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Just wanted to let you know that I removed the intake manifold and found indications of the gaskets leaking. I replaced the intake manifold gaskets (and the heater hoses while I was at it) and have not had any problems since then. I took a four hour drive this past weekend and no indication of anymore problems.