Ford Exhaust System :: Exhaust Quieter When Cold / Much Louder When Warmed Up


Dec 10, 2007

My F150 exhaust seems rather quiet when I first start it up, but after it gets warmed up good, the exhaust is much louder (which I like). I started wondering if I had a crack up front that widened out when it got hot, so looked under it when I got home today with it hot and still idling, but didn't see any cracks. Also I did not hear any noise like a leak. All sound was coming from the side exit pipe. So... what is the phenomenon that would cause this?

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Ford Exhaust System :: Exhaust Manifold Leaking / Louder Than Normal Knock When Accelerating

Leaking exhaust manifold? The truck has a much louder than normal "knock" when accelerating. At first I thought and had some bad fuel in the tank. I eliminated that with a full take of good fuel and some STP but the "knocking" continued. Then I thought that perhaps it wasn't firing on all cylinders but it felt like it had full power. I took it to my mechanic and he said it as a exhaust manifold leak. He said that he has never replaced the exhaust manifold but that it was a "nightmare" and expensive. He also said that it's not a safety issue but on the long run the leak would cause the truck not to pass its emission test. He said the problem was with rusted bolts that would be difficult to remove.

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Ford Exhaust System :: 2002 F150 - Making Duals Louder

I currently have dual exhausts on my 2002 F150 and that's all I have besides stock for the exhaust system. How can I make it louder without getting rid of the duals?

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Gmc - Envoy :: Louder Exhaust Noise Than Normal When Start The Truck In Cold Weather

I have a 2003 GMC Envoy with 76000 miles on it. I heard a louder exhaust noise than normal when I start the truck in cold weather. I had it checked and was told that the exhaust system was OK but that the noise was because the motor mounts needed replacing. I have never heard of this before. Before I spend this money I wanted to see what your reply was to this question. Is it common for motor mounts to have to be replaced on this type vehicle with this mileage and age?

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Ford Exhaust System :: Exhaust Leak - No Gasket Or Donut Ring In The Flange?

I tore it apart and there was no gasket or donut ring in the flange. Is there supposed to be a gasket or donut ring? I can feel the leak with my hand. I have retightened & it still "tick-ticks" real bad.

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Ford Exhaust System :: 351w Exhaust Collector Stud Nut Size

I have a 90 bronco with a efi 351w and im missing one nut for the manifold to exhaust pipe flange. I have looked all over the net and can't find the size I know its a 1/2in socket but I need the thread pitch and size, had the parts guy try to sell me the stud and nut kit seem really expensive for just a nut and to install the full kit I have to pull skid plates and the trany supports just to start to get room to do the job, seems like a lot of work to replace 1 nut...

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Ford Exhaust System :: 2003 V10 - Running Little Bit Rough / Exhaust Leak?

I just purchased a 2003 V10 with 270 000kms. The truck had had regular maintenance. It has an exhaust leak and runs a little bit rough. Could the exhaust leak cause the truck to run a little rough or am I dealing with another issue?

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Ford Exhaust :: 2000 - Can Remove Catalytic Converter From The Exhaust System?

Long story, I'll try to make this short, 2000 E250 5.4L What would or could happen if the catalytic converter was removed from the exhaust system?

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Ford Exhaust System :: 2006 - Exhaust System Installation?

Want to install exhaust system on my 06 F350.Tell me,what is the best brand for my truck,I know, very good intake system is from K&N,what about exhaust?

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Ford Exhaust System :: 1996 F150 - Exhaust Making Strange Howling Noise

Ok, probably about 1/3 times i start my 96 f150 4.9 with true duals, the left pipe has a higher pitched howling noise, its a steady tone whether I rev the truck up or not it just gets louder. It will do it for about 6 seconds and then stop. The truck doesn't run badly because of it, but i took her to autozone to get her scanned and they said that the oxygen sensor on the first manifold bank has a slow response on startup. Is that what causes this strange noise, I don't even know how it would make it, it sounds much different from the engine. The right pipe doesn't do anything.

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Ford Exhaust System :: 1994 Ranger - Loud Exhaust Sound In / Outside The Truck And At Idle

I have a 94 ranger 4L. I am looking for a more loud exhaust sound in/outside the truck and at idle. I have had a cherry bomb turbo on it and it was ok but not loud enough for my liking. I just picked up a flowmaster 40 2 days ago and it sounds good but again just not loud enough for my taste and kinda a lot more. I was looking for a louder muffler that is not a glasspack and would like to stay under like 80 or so.

I also thought about getting a high flow cat which i think might make some more sound but was not sure. Im running the stock pipe which is 2" and end in back of the wheel on the right. I look at the Hooker Headers Maximum Flow Muffler which i thought would be louder b/c it's more straight through the muffler so it would put off more sound better. What would u recommend for something more loud ?

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Ford Exhaust System :: Exhaust Leak At Manifold Where Donut Gasket Meets The Catalytic Converters

My truck just started running really loud when it's cold and the leak goes away when it warms up to operating temperature.I did a little bit of investigating and I have found where the leak is coming from at the end of the exhaust manifold where the donut gasket meets the catalytic converters. It appears that the bolts rotted that hold the system together at the gasket. What should I do to repair this? I don't really want to replace the whole manifold because I know I'll break a stud off in the engine because everything is pretty rusty down there. I even took some pictures of the problem....

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Ford Exhaust System :: 1994 F250 - Replacing Exhaust?

I have been thinking about toying with my exhaust. I don't have a crazy amount of money. I got a 94 F250 with the 5.8 liter 351. Heres what I was thinking. Get rid of everything after the cat, and then run a single 3 inch pipe from the cat to a flowmaster 40 series, and then exit either right before the back tire or right after it.

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Ford Exhaust System :: Exhaust Pipe Cut Just Behind The Rear Of Cab - No Muffler

i have my 4 inch exhaust pipe cut just behind the rear of the cab right now with no muffler. If i cut it further up maybe jsut under the front seat or so what would this to the sound? would it make it deeper or louder?

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Ford Exhaust System :: Copper Exhaust Coming Off The Headers

Why it won't work. copper exhaust coming off the headers. I have the ability to get it and bend it and how cool would that be copper duals. Why won't it work. If I bolt it right to the headers.

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Ford Exhaust System :: Side Exhaust With No Muffler?

I own a 2005 F350 Diesel and I want to remove my stock exhaust and run a side exhaust with no muffler. Has any Diesel owners out there run a side exhaust system?

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Ford Exhaust System :: Dual Exhaust Without Engine Possible?

Is it possible to do so with out engine problems later? I would love to go with duals front to rear 3in pipe and tips. Any do's or dont's?

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Ford Exhaust :: Torque Specs On Exhaust System?

Just put on a 4" MBRP turbo back system. What torgue should I tighten the clamp bolts?

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Ford Exhaust :: Changing Out The Whole Exhaust System?

I am thinking about changing out the whole exhaust system heads all the way back to replace my annoying glasspack setup that came with the truck when i bought it. its a 95 f150 5.0L im thinking about getting hooker headers [URL] .....

And that's as far a i got because i want duel outs but don't know what kind of cat i need and what kind of muffler. and even more which brand of muffler because i want a really deep tone but not extreme loud. How to put this exhaust system together?

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Ford F-150 (2009-2014) :: Wind Noise Is Literally Louder Than Exhaust At 55 Mph

Ok, as promised I made a clip of my 2011 Ecoboost towing my 5-6K trailer with a 3" cat back MBRP exhaust. I gained over 2 mpg with this exhaust (MBRP) and intake (aFe) while towing. So far while not towing it only seems to have given roughly a 1 mpg increase over stock. I can barely hear the exhaust at highway speeds after the truck shifts into 5th and 6th gear. The wind noise is literally louder than the exhaust at 55 mph!

[URL]....

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Ford Exhaust :: Stock Exhaust Into Dual Exhaust?

.What would happen if I had a muffler shop turn my stock exhaust into a true dual exhaust system with 2 magnaflow mufflers on my 6.9L N/A diesel?

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