HOW TO ADMINISTER SEAFOAM TO CLEAN YOUR ENGINE
(Thanks to Toysrme for the following discussion)
Seafoam makes the world go round!
Not really, but at $5 a can it's a steal.
A can is 1 pint.
You need 2 cans.
Pour 1/2 a can in the gas tank when you stop to fill up. (This ensures it mixes well)
Pour the other 1/2 in with fresh engine oil.
At the least you will notice that the engine will idle noticeably smoother.
Here's where most people get confused. Using it down the intake to clean the combustion chamber & parts of the head.
1) Drive the car around the block until it comes up to temp
2) Pour 1/3 of a can into a separate container (
1/4 of a can for 4 cylinders)
3) Crank the engine
4) Pull the brake booster hose off & put your finger over the end so the car doesn't lean out & stall.
5) Drop the hose in the bottom of the container & let your finger off the end. If the engine doesn't stall out completely
SHUT IT OFF ASAP.
The fluid will near instantly disappear & the engine should stall from being too rich to run, or being too lean from the hose letting air in afterwards. This will not break your engine. You're not using enough fluid to hydrolock it.
6) The engine should sit for 5 min.
7) Crank the engine & let it run until the smoke dies down
Normally you will get an ungodly amount of smoke.
8) As the smoke dies down, drive the car around. Be sure to make liberal use of
1st & 2nd gear to get to the higher portions of the RPM range a few times. That would be
5000-6850rpm..
You are not breaking your engine by running it at those rpm... All of the computers on all of the engines will cut the fuel to slow the RPM down before the engine is damaged. Yes, they are built for it...
Why someone would want to do this?
To clean gunk, sludge, & misc. heavy buildup out of the oil system. Pump, passages, bearings, walls.
To clean the fuel system.
To clean carbon out of the combustion chamber.
Now some people ask why you want to go to the trouble of cleaning carbon out of the engine.
Because as it builds up on the valves, they don't seal as well - causing poor compression while the leaking gas superheats parts of the engine that are not designed for it.
Because carbon in the combustion chamber is bad. mmmm kay? Any carbon becomes superheated. Superheated carbon / metal will cause the incoming fuel & air to ignite earlier than it should be. This (Detonation, pinging, kocking - all just names for pre-ignition) is very derailment to many aspects of engine life.
This is what a 3vz-fe looks like @ 95,000 miles.
(Forget the fluids, fluids spill look at the black carbon build-up)
Here's what it looks like 6 months after the last 3 Seafoam treatments.
Seafoam = Good. It's cheap & versatile, while working at least as good as anything else; regardless of the cost.
Brian R. note: GM Top Engine Cleaner is another useful additive for the above purpose.