What is the best way to tighten exhaust manifold? - Mustang Evolution

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Old 08-05-2011, 10:12 PM   #1
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What is the best way to tighten exhaust manifold?

Have an 04 Mach 1 with a ticking noise under load. I need to check to see if the exhaust manifolds are on tight enough. as it is quite cramped in the engine compartmen I decided to look for suggestions before I start tearing things apart.

What is the best way to go about doing this?

Or replacing the gasket?

I've heard some people that have had to drop out the k member just to check.
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Old 08-05-2011, 11:05 PM   #2
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I'd be more concerned about it being detonation more so than a loose exhaust. youd have ticking at idle with an exhaust leak.

One exception I know of that actually happened to me was one of my O2 sensors was loose. It was fine at idle then ticked under load.

If your O2s are fine, try higher octane gas or a better brand before tearing into things.
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Old 08-05-2011, 11:08 PM   #3
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To answer you question tho for reference, with the 4 v, you'll need to drop the kmember unless you are stretch Armstrong. There just is no room to do anything in there.
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Old 08-05-2011, 11:34 PM   #4
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Re: What is the best way to tighten exhaust manifold?

Damn, stupid mechanics manual says just to remove the starter motor.... Ford must have tiny children working for them.

Is there a way to eliminate detonation?
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Old 08-05-2011, 11:39 PM   #5
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Re: What is the best way to tighten exhaust manifold?

If you have aftermarket midpipe, check the connection there, also check to the catback. It can sound like it's coming from the engine but be somewhere else in the system.

Detonation is primarily caused by low quality gas, I believe your Mach required 93 octane so if you've been running anything else detonation could be an issue. It will increase with load on the engine and sound like tapping metal or marbles in a can.
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Old 08-06-2011, 03:59 AM   #6
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Re: What is the best way to tighten exhaust manifold?

Good gas, Tried to adjust timing with tuner, no difference. But now that you mention o2 sensors I did notice alot of soot on the 02 sensor on the mid pipe. I didnt feel any air coming out guess I'll try to clean them.

Essentially it only does the tick under load. Reving it with clutch in or disengaged I cant really hear it, unless WOT. But under load and clutch out or engaged ticking starts in more then 25% throttle.

Watch it probably is the 02 sensor.
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Old 08-06-2011, 11:33 AM   #7
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Re: What is the best way to tighten exhaust manifold?

Do you have a tune on your car?

---------- Post added at 12:33 PM ---------- Previous post was at 12:31 PM ----------

I just had Long tubes put on my car becuase I was convinced my bbk shorties were leaking but when the guy tore it apart for the install my EGR tube was cracked in 3 places. You will never be able to see them unless it is removed. Since your car is older it has seen many heat cycles which can and will cause the tube to crack
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Old 08-06-2011, 01:23 PM   #8
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Re: What is the best way to tighten exhaust manifold?

the exhaust manifolds leaking is slim to none on a Mach 1 , unless its at the mid / cat pipe to manifold connection ? they use an exh gasket on the passenger side but not the drivers side ( don't ask me why ) you could check that ..
listen and make sure its not coming from the cyl head , some Mach's have a head ticking issue ( thankfully mine wasn't one ) but I believe there was a recall on it ...... I think the heads have to get replaced if so .............
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Old 08-06-2011, 03:57 PM   #9
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Re: What is the best way to tighten exhaust manifold?

yep ticking was a recal on 03 machs.

Nope changed the gasket on the exhaust flange, still ticking lol.

I'll play around, pluss this could be my excuse to get some shorties or long tubes.
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