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Old 02-04-2018, 03:16 PM   #1
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Default Coolant leak from intake manifold?

Hey guys new here with a quick question. I have a bad coolant leak and it looks like itís coming from the intake manifold. I canít tell for sure but looks like the bottom right side if looking at it from passenger side. Does coolant flow through there or am seeing it wrong? Maybe something else in that are? All my hoses look fine.Thank you for any help.
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Old 02-04-2018, 04:14 PM   #2
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i have found that buying a UV dye kit from oriellys is the easiest way to find any leak. ask for it at the counter. then tell them what dye you need...coolant or oil/trans/gear oil.
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Old 02-04-2018, 08:52 PM   #3
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its probably the lower heater hose. Either way, it doesn't matter, ur truck is telling you to change all hoses, flush, retighten, new fluid
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Old 02-05-2018, 10:52 AM   #4
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Originally Posted by h.stickeye View Post
its probably the lower heater hose. Either way, it doesn't matter, ur truck is telling you to change all hoses, flush, retighten, new fluid
Before you do all that, maybe pull the intake and install new gasket. Clean surfaces GOOD and use Permatex brown. THEN do the stuff above suggested.

Watch it on the tightening of bolts to that intake. It's CAST aluminum, and old. They can crack or shatter just breathing on them when they get old, but will last forever if you don't go overboard with the bolts. A good gasket job can take the place of a couple of pounds of factory-approved force. Those numbers are for when motors are new. Later, after several thousand heat-ups, and cool-downs, the metal gets brittle and must be treated with love.
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Old 02-05-2018, 11:41 AM   #5
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The V6 has a coolant passage through the intake, but I'm not sure about the 4 cylinder.

Which engine do you have?
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Old 02-05-2018, 02:13 PM   #6
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by looks of the valve cover you have a 4cy, there are 2 connectors, an elbow (pt#14876-72P00) or one that is pressed in, which has a nipple (pt#11060-72P00) you might check into..
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Old 02-05-2018, 02:14 PM   #7
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Quote:
Originally Posted by jp2code View Post
The V6 has a coolant passage through the intake, but I'm not sure about the 4 cylinder.

Which engine do you have?
V6 also has that coolant pipe under the manifold which would be loads of fun to try to fix a leak in without removing the plenum.
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Old 02-05-2018, 02:50 PM   #8
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Thank yall for the help. thought i got it to stop leaking but nope i was wrong. one more question, i found a hole that looks unplugged next to the intake manifold, should there be a plug in it? looks like there is one from the images i have found. mine is just a hole. anyone know what part that is to plug it. Maybe coolant from there is leaking.i uploaded an image of the plug im talking about. not sure what it is for. thanks again for all the help.
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Old 02-06-2018, 07:08 AM   #9
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Quote:
Originally Posted by RPM06 View Post
Thank yall for the help. thought i got it to stop leaking but nope i was wrong. one more question, i found a hole that looks unplugged next to the intake manifold, should there be a plug in it? looks like there is one from the images i have found. mine is just a hole. anyone know what part that is to plug it. Maybe coolant from there is leaking.i uploaded an image of the plug im talking about. not sure what it is for. thanks again for all the help.
Gotta do BIGGER, more CLOSE-UP picture(s).

Nice engine, though.
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