That is only the preferred method.

Don't you have Chevron stations down there in Houston? You can use Techron instead.

 

With exhaust gas recirc, the intake and throttle body gets smutted up. Fuel injector cleaner only cleans from the fuel injector just behind the intake valve through the cylinder and valves.
By letting the intake vacuum suck it into the manifold it cleans the carbon off the intake. You may have to spray the throttle body directly to properly clean it.

 

how much should be put through the vacuum line? and how much in the tank?

 

Never used seafoam but I have read of the 1/3rd method. 1/3rd in the tank, oil/crankcase, and through the intake slowly. You pour it in fast enough to get it in there but not too much to bog the motor out.

 

Autozone sells it here

 

No need for Seafoam in most engine crankcases. Nothing goes in the crankcase of my truck but oil.

When I did mine I used the half and half method. Half in the tank and half through the brake booster line. And yes it helped.

 

Define "hesitation" in this context.

 

Inject it into the trash can, 'cause that's where it belongs.

Modular engines, properly maintained, run very, very clean. Take care of your trucks and forget that stuff.

 

Quintin,

comments like these do nothing more than discourage the discussion on this topic. This is an important topic as broken plugs can be costly to fix and could possibly ruin the engine.

If this problem is due to carbon buildup around the plug inside the cylinder, and Seafoam has proven to soften up carbon, and softening up the carbon inside the engine aids in the removal of the plug, then there are many on this forum who would like to know about it. I know I would.

 

Says who?

 

I find this reaction to be just as discouraging to further discussion, unless your honestly interesting in reading what has been researched on the subject. Again, somewhere there is someone reading this who is ready to change their plugs.

 

Find it however you want. He made a statement pretty much calling every one of us who is saying there is a use for Seafoam liars. And I am asking for proof. Has everything to do with the discussion.

 

What is bad about this seafoam? The idea of a product that could clean out 80k miles of crap sounds awesome. Tell me more of this stuff.

 

May I stand up and raise my hand because I'm just a week or so from changing my plugs and anything I can do to make that experience a fun one is worth trying. Now for my newbie questions:

1/3 in tank....gotcha
1/3 in vacuum line....explain please:

Do you have the truck idle, put vacuum line in can, let it suck then shut hood and drive it around for a little while? Does anyone have pictures of the engine compartment with highlighted vacuum hoses that show which one to use?

 

NO NO NO

First off, not to be a jerk, but the directions are on the can. DO NOT let the vaccumm line suck the Seafoam from the can. While unlikely, this could cause hydrolock. Do as the directions state: pour the Seafoam slowly into the line. I tape a small funnel to the line and do it that way.

Personaly, I use a half in the line and a half in the tank. Once it is in the engine, let it sit with the engine off for a little while and then crank it back up. You will probably get a check engine light that is fixed with a simple battery disconnect.