generation2000 wrote:maybe he meant clogged exhaust mainfold. very possible.
Nope, that mechanic is selling bonafied grade A bull$hit!!! You would have to run so rich that your ECU would shut the car down, and for so long... It's a bunch of bull$hit. Trust us.
xsvhp wrote:I had a clogged cat and discovered 'Seafoam;' it is an amazing and safe carbon/sludge remover that you pour into a vaccume source, (like the brake booster), which will then travel through your intake manifold, through the engine, and out the exhaust. It will dissolve all the inner nasties, and unclog things such as catalytic converters and mufflers.
Sounds to good to be true, but the **** truly works! You'll be amazed at what comes out the pipe after using it, and it won't harm your cat, O2 sensor, etc.
Seafoam is good stuff, but it doesn't remove carbon from the exhaust system. It may remove some from the exhaust valves, but not the catalytic converter or muffler. Trust me on this as well. All the smoke you see come out the tailpipe is not the "bad stuff" burning up from inside the engine. That is the exhaust from the burning of the seafoam in the combustion chamber.