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post #1 of 9 (permalink) Old 01-10-2007, 08:52 PM Thread Starter
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Egr

This has been bothering me for awhile and a buddy of mine referred to this, as it might be the culprit for my problem. Since I had the head gaskets done the other year, I have noticed an exhaust leak sound. I have had my exhaust redone which did not resolve that issue, so it still remains. Is it possible that the egr got damage or is cracked causing the sound I hear? I tried looking for a bad seal for the manifolds but did not see any. Any ideas? Wasn't sure if this should be placed in the exhaust thread or not. Thanks.


-Brian
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post #2 of 9 (permalink) Old 01-10-2007, 08:58 PM
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It's possible that the EGR tube cracked. Have you checked the fitting at the EGR valve to make sure it's tight and not cross-threaded? Also, have you checked the tubes going to the EGR feedback sensor? Those might have a hole or be cracked.

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post #3 of 9 (permalink) Old 01-10-2007, 09:16 PM Thread Starter
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Honestly, I feel stupid for admitting this, but I really don't know where the egr tube is located. It's on the passenger side, correct?


-Brian
1989 Mercury Cougar - Anything but the Ordinary

Fully Built 4.2 Coming Soon, Parts include:
SC Block, 4.2 Crank, Scat H Beam Rods, Wiseco Pistons, Custom Comp Cam, 3/8 Main Stud Girdle, Ported/Polished Split Port Heads and Lower Intake, Windstar Upper, Heavier Springs, 1.73 Roller Rockers, BBK Valve Covers, Kooks long tube headers, Aluminum Radiator.

It May Not Be Pretty When Finished, But It'll Perform Pretty Darn Well.
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post #4 of 9 (permalink) Old 01-10-2007, 09:22 PM
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It runs from the right rear side of the EGR valve down into the passenger side exhuast manifold. Mine had a hairline crack when I redid the headgaskets and made the worst possible sound ever until I found it.
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post #5 of 9 (permalink) Old 01-10-2007, 09:28 PM Thread Starter
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Did you repair it or just replace it? How hard was it to do?


-Brian
1989 Mercury Cougar - Anything but the Ordinary

Fully Built 4.2 Coming Soon, Parts include:
SC Block, 4.2 Crank, Scat H Beam Rods, Wiseco Pistons, Custom Comp Cam, 3/8 Main Stud Girdle, Ported/Polished Split Port Heads and Lower Intake, Windstar Upper, Heavier Springs, 1.73 Roller Rockers, BBK Valve Covers, Kooks long tube headers, Aluminum Radiator.

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post #6 of 9 (permalink) Old 01-10-2007, 10:13 PM
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It was so brittle that I just removed it. Right now I have the EGR and the manifold plugged. Surprisingly it passed inspection. Only downside is that it brings a CEL on.


The dealer wants about 65.00 for a new one. When I get some extra cash I plan on buying one.


There are two fittings--one on either end. Picture a thick piece of brake line. The fitting at the manifold is hard to get off but some soaking in PB should do it just fine. Its not that hard at all to remove, the fitting down at the manifold is in an ackward position though.
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post #7 of 9 (permalink) Old 01-10-2007, 10:52 PM Thread Starter
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Do you think there is a diagram somewhere that I can look at to get a better idea?


-Brian
1989 Mercury Cougar - Anything but the Ordinary

Fully Built 4.2 Coming Soon, Parts include:
SC Block, 4.2 Crank, Scat H Beam Rods, Wiseco Pistons, Custom Comp Cam, 3/8 Main Stud Girdle, Ported/Polished Split Port Heads and Lower Intake, Windstar Upper, Heavier Springs, 1.73 Roller Rockers, BBK Valve Covers, Kooks long tube headers, Aluminum Radiator.

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post #8 of 9 (permalink) Old 01-12-2007, 05:54 PM
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I can try and take a few pics if you like.
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post #9 of 9 (permalink) Old 01-13-2007, 12:31 PM Thread Starter
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Don't worry about it. It's a little chilly to be doing that. I guess I'll wait until Spring to tackle the project. Thanks.


-Brian
1989 Mercury Cougar - Anything but the Ordinary

Fully Built 4.2 Coming Soon, Parts include:
SC Block, 4.2 Crank, Scat H Beam Rods, Wiseco Pistons, Custom Comp Cam, 3/8 Main Stud Girdle, Ported/Polished Split Port Heads and Lower Intake, Windstar Upper, Heavier Springs, 1.73 Roller Rockers, BBK Valve Covers, Kooks long tube headers, Aluminum Radiator.

It May Not Be Pretty When Finished, But It'll Perform Pretty Darn Well.
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