Quote:
Originally Posted by djb383
Seafoam, when added directly to the intake, will belch white smoke whether the engine is brand new or has 250,000 miles on it. It's an oil based product and can momentarily/temporarily foul plugs, when added to the intake too quickly, which will trigger a CEL because the system detects a cylinder misfire. If you add it to the gas tank, you won't have the plug foul problem. Also, the only way Seafoam will clean the injectors, is to add it to the fuel tank. Adding it directly to the intake just bypasses the injectors. As lean as these trucks run (ULEV II) there's no way you have cylinder carbon build up at 20K miles. Again, it will smoke in a new engine just as much as in an old engine.
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Makes sense...but if you only add it to the fuel, it only cleans the injectors and never cleans the top end, correct?
At any rate, I added a 1/2 can through the vacuum line, and about 1/4 can through the gas...still running great.
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Mine: 2007 Tundra Double Cab, 5.7L, slate, 2x4, Flowmaster 50 series dual in/dual out, Homemade leveling kit (2.5")
Hers: 2007 Tundra Double Cab, TRD 2x4, 4.7L, desert sand
Previous Vehicles:
1990 Jeep Wrangler Islander, Rancho Lift
1992 Chevrolet Silverado Z71 4x4 RCSB - 190,000 miles and still running strong when I sold it.
2001 Honda Magna VF750C
2002 Chevrolet Tahoe Z71
2006 Chevrolet Trailblazer SS (8.9 sec 1/8 mile - STOCK)
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