Seafoam!

"Jake - Has Bad Luck So You Don't Have To" (murdersofa)
03/04/2016 at 09:12 • Filed to: None

It makes copious amounts of smoke and such. Actually, this is the only car I’ve seafoam’d that DID smoke a lot afterwards. Annoyingly it runs worse than it did pre-seafoam. Now has a hard miss any time you ease into the throttle while driving, which is loads of fun in a manual.

DISCUSSION (9)

RamblinRover Luxury-Yacht > Jake - Has Bad Luck So You Don't Have To
03/04/2016 at 09:22

Have we possibly gunked up or confused the MAF?

ESSSIX GmbH - Accountant/Wagon Thumper > Jake - Has Bad Luck So You Don't Have To
03/04/2016 at 09:23

Yea, seafoam is like Russian roulette for old cars...

CalzoneGolem > RamblinRover Luxury-Yacht
03/04/2016 at 09:24

This is what I’d check and the o2 sensors. Any sensors in the way of the seafoam.

CalzoneGolem > Jake - Has Bad Luck So You Don't Have To
03/04/2016 at 09:26

I’ve only really used seafoam in small engines. I had a leaf blower that would only run with seafoam mixed in.

CalzoneGolem > ESSSIX GmbH - Accountant/Wagon Thumper
03/04/2016 at 09:28

Russian roulette has two outcomes death and not-death. Seafoam and have a three out comes runs worse, runs same and runs better.

Jake - Has Bad Luck So You Don't Have To > RamblinRover Luxury-Yacht
03/04/2016 at 10:12

Nah, I put the seafoam in through the PCV line into the manifold, after the MAF/throttle plate.

SwellBell > Jake - Has Bad Luck So You Don't Have To
03/04/2016 at 14:16

Yeah, seafoam is a mixed bag. I tried different treatments over the years on my Camaro, Audi A4 and Corvette... Felt like camaro bellowed more smoke, and the A4 and corvette didnt feel much different. I pretty much only use it once a year on my current vehicles, and only pour it in the gas tank, no more manifold introduction, and I would never put it in my oil!

For the most part, it seems like snake oil, as I have not noticed anything significant.

LOREM IPSUM > Jake - Has Bad Luck So You Don't Have To
03/04/2016 at 21:42

I used to live in a house which was block from the cop shop. Had my 89 300e on the slab in the backyard and ran a full can of seafoam through it.

Long story long, cop was walking to his cruiser, saw an enormous cloud of smoke billowing from down the block and thought a house was on fire. He called it in and hurried our way, unbeknownst to me.

Meanwhile, I had just stepped inside to do a quick hot knife. Did so, came back out, and bumped into a very confused officer walking into my back yard wondering what was on fire and where the fire had gone. I smiled and told him that I had just seafoamed my car to which he replied “seafoam?” looking more confused than ever.

I explained that it was a chemical that cleaned out residue from the top end of the engine, the byproduct of which was sometimes a great deal of smoke. The look on his face changed a bit as he thought for a moment, presumably trying to decide if anything I was doing was indictable. Then he smiled and told me to have a good day, still looking a bit confused as he walked back to his car.

A week later we were having a few libations and were throwing strips of 25mm hilti charges into the fire pit, the result of which was essentially projectile-less random machine gun fire. This went on for at least an hour, and no one batted an eye.

Some Vancouver suburbs are funny that way.

LOREM IPSUM > Jake - Has Bad Luck So You Don't Have To
03/04/2016 at 21:48

To be a bit more helpful to the op. Pull the spark plugs and either clean them up with a wire brush or just bite the bullet and swap them out. Seafoaming the intake likely dislodged decades of oil residue from the intake manifold and pcv system, all of which was sucked in and burned off. Now you’ve got fouled plugs from all that gunk burnoff residue.

It can also kill o2 sensors, but your situation is almost 100% a fouled plug. (Assuming you reconnectted your vacuum tubing correctly)