I noticed after warming the truck this morning that I had three puddles of water on the ground. Two where I normally find them at the tail pipes and one just north of the muffler where the cupeling is. Is this a good sign of a leak? What are possible problems and solutions?
Thanks,
GATR
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I'm not a pilot, but I did stay in a Holiday Inn Express last night!
Definitely sounds like a leak. Can you see any sign of rust near the coupling? Now that you know you have something going on there, when you start the truck stand out there and look for where it is coming from. As long as it is outside you can lay under it (in PARK with emergency brake applied) and use a flashlight to see where it is coming from. It may take a couple of tries over a a couple of days to pin it down.
Is the coupling a welded joint or just a slip joint with a pipe clamp?
If it is a welded joint then have it touched up by a welder. You need to grind it clean to bare metal/weld so that it is shiny in order to have the best surface to weld on.
If it is a pipe clamp you can try tightening it but there is only so much you can crank those down.
A third possibility I just thought of is that maybe the front of your muffler has a hole in it. If this is the case then you get to spend some money on a new muffler project (replete with pictures!).
Let us know what you find out.
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Highwaylizard 2004 Tundra Double Cab Limited Edition 4.7 liter V8, four speed automatic, four wheel drive, testing platform for fuel economy, self designed cold air intake using ram air principle, Fitch Fuel Catalyst, Aero Turbine, "Foolie Exhaust" from Aero Turbine back, True Flow Intake with True Flow foam filter, Mobile 1 in the engine, K&N oil filter, Royal Purple in the differentials. 3:91 gears in the front (Thanks Cajuntundra!) and rear (Thanks Nytrousboy!) differentials, Toyo H/T Open Country tires. testis amotio per pera
Those couplings in front of the muffler on the Gen 1 are a very poor design. I was constantly tightening and retightening, but it would always get loose and start buzzing again. I finally got two blocks of aluminum and built a flange for it.