I used Seafoam in my 5.9L this weekend. I "sipped" it in through the brake booster vac line, allowing the motor to stay running on its own, then spraying a bunch in until it stalled after 1/2 can. Then while I was waiting about 15 minutes I poured the rest of the can into my fuel tank. Started up my truck and rev it to about 1800 rpm for a bit then rev'd it to 3000 and let it drop then 4000 then let it drop until the bulk of the smoke had stopped, then went on a 20 minute drive on the highway to make sure it was done smoking. IMMEDIATE beneifts! Smoothed out my idle and great throttle response! I'd use it again for sure.

 

I think you are leaking oil, not burning it. Most of the smoke comes from plenum oil, but STILL a bad cat can create some nice smoke. Make sure to do this when your cat is really hot. So take her for a drive or let her warm up completely before you do that.

Same thing happened with my 2001. I did it twice on my 1996 and it was a smokescreen, so I thought I did something wrong (which is pretty hard, it is easy).

But, when I did my plenum about 5K miles later, the plenum plate was completely spotless! My truck internals are really clean, and the plenum was not blown (49K at the time). I just did seafoam because it is good to do once per year. In fact, I have a can in the garage I bought a few months ago. Keep forgetting to use it!!

I don't add any to my gas though. I have an inline fuel filter, so I pour a few ounces into the fuel filter (the big oil can thing mounted to the brake booster) and let the truck idle. That cleans the injectors from the inside.

 

I have already modified an intake (from wrecking yard) and waiting on timing set. Plan to replace plugs, wires, water pump at the same time. Would it be wise to run a can of seafoam through a tank or two before I install the kegger and other items?

 

I really don't think it will make a difference. I would leave it until you get the work done. I also don't add seafoam to my tank. I use the lucas fuel treatment (upper cylinder lube is what it is called) religiously.

After that work, I would just get the quart jug of the lucas upper cylinder lube and squirt three ounces in every tank of gas. I don't use any additive every 4th fillup.

 

now do i leave the truck running while im doing this? im going to do it today. and i only use 2/3 the can or can i use the whole thing?

 

^The engine must be hot and running yes.
Then you let it take a big gulp of it and shut the engine off for about 15-20 minutes. Then start it up, rev it, and take it for a test drive.

 

Pour it in very slowly, so the engine doesn't stall. You don't even have to pour really, the hose will suck the fluid in.

 

Brake booster hose will suck it in fast enough to stall the engine if ya aren't careful.

 

what I learned from my experiences with sea-foam:

keep an eye out for foxes.. popo's.. wayward driving drunkards.. big girls.. bologna sandwiches, and slutty puppies..

the rest is easy.. I highly rec the stuff..

 

VW ing? or just ?