Quote:
Originally Posted by PhileasFogg
There guys are all way off base. I've seen what Seafoam can do. BTW dont add it to your fuel tank. Oil companies are selling is the cheapest stuff they can get by with and calling it gasoline. And our cars are tuned to worry about emissions. That equals carbon build up inside your engine. Period. Drive your car and get it up to operating temprature. Have some one sit in it at idle. Take off a vacume hose and drop it in the can of seafoam. The vacume will pull the saefom into you intake system. The person behind the wheel will have to bring the RPMs up to keep the engine from dying. You may have to take the house in and out of the can a few times. You may have to rev the engin to 2500 rpm or so. The car will smoke like you have never seen. Do this until you get half the can in the engine. Then turn the car off and let it sit for one hour. Go to the car after one hour and start it up and drive it hard until it stops somking. The smoke is carbon buildup burning off. Wait a week and use the other half can in the same fashon. Then about once a month add Lucas Fuel Treatment to a tank of gas. That's it and ALL cars that burn US gas can benifit from this.
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I think the original question was how to clean out the fuel system. This is cleaning out the carbon from the combustion chamber.
That being said, I drove older cars for years. At first, I was adding a bottle of fuel system cleaner around the time I changed the oil. Then I found out that the crap was not dilluting well in the fuel, and was causing it to run worse.
My 2nd car had 280,000 miles on it when I sold it. I used one can of fuel treatment at 250,000 or so, and it made no difference.
My VX I just sold had 232,000 when I sold it. I used NAPA fuel injector cleaner on it at some point, but it did not make any difference on how the car ran. I still say that the "Italian tuneup" is worth it. In other words, if you give your car full throttle once in a while, the fuel itself keeps the injectors relatively clean.
I did use Seafoam on my VX sometime in the low 200,000-mile range. The car seemed to run a bit smoother. I put 1/3 can in the fuel, 1/3 can in the crankcase (the day before an oil change), and I sucked 1/3 can into the brake booster vacuum line. Don't just drop the hose into the can of Seafoam; the product instructions actually recommend against this. Instead, pour the contents into a cup and soak it up SLOWLY. That will keep the car from stalling, and you won't need a 2nd person in the car to keep the RPM up. Let the car idle for a bit, then drive it like you stole it until it stops smoking.
Not all the smoke is caused by carbon buildup; the product itself causes a good bit of the smoke.
I believe Seafoam works. I just don't think that Seafoam or other products make much sense except in a higher-mileage engine. It takes a long time to build up enough carbon buildup to cause the engine to run poorly. Just keep the oil, air, and fuel filters changed, and you shouldn't have any problems. For that matter, the fuel filter probably will be OK for 100,000+ miles unless the tank starts to rust or you are the victim of vandalism.
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