4.6L (1996-2004 Modular) Mustang Technical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within.

help.

Old 12-04-2007, 03:55 PM
  #11  
josh.davis
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thanx for the info oxfordgt, do you think it could be caused by my manifold since i didn't replace the gasket. b/c around those two cylinders, i see a some coolent leaking from there.
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Old 12-04-2007, 03:58 PM
  #12  
4.6LPoppy
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ORIGINAL: oxfordgt

If you have 2 cylinder right next to each other that are misfiring then you have a blown head gasket. Do a compression check to verify. What 4.6poppy was saying is that the head gasket is blown out between the 2 cylinders and coolant is coming out of the water passage and going into the cylinders.
Yes, that is what I meant. I didn't say it well I guess. Iwas also sayingthat the pressure that blew up your manifold is continuous down through your head ports to the head gaskets via the valve passages. If it was enough to blow up the manifold, it may have been enough to blow ahead gasket......thus the water. Thanks, oxfordgt.
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Old 12-04-2007, 04:07 PM
  #13  
1fstblckgt
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Default RE: help.

ORIGINAL: josh.davis

thanx for the info oxfordgt, do you think it could be caused by my manifold since i didn't replace the gasket. b/c around those two cylinders, i see a some coolent leaking from there.
yeah... thats what he's talking about (head gasket)
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Old 12-04-2007, 04:07 PM
  #14  
oxfordgt
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ORIGINAL: josh.davis

thanx for the info oxfordgt, do you think it could be caused by my manifold since i didn't replace the gasket. b/c around those two cylinders, i see a some coolent leaking from there.
The head gasket is under the head inbetween the head and block. It blew due to to much pressure in the cylinder which is what caused the nitrous backfire which is what blew your intake.
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Old 12-04-2007, 04:23 PM
  #15  
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It's a leakdown test, not leak downtest--this is a good basic explaination...
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Old 12-04-2007, 04:50 PM
  #16  
oxfordgt
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+1 if you have a compressor and you are able to do the leak downtestthen if its a blow headgasket you will hear air escaping from the other sparkplug hole.
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Old 12-04-2007, 05:19 PM
  #17  
josh.davis
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what if my manifold is leaking too.
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