So, I seafoamed my wrx today through the bpv hose. Ran about a third of a can in. Waited for 6-7 minutes and restarted it. I got very, very weak smoke effects. Total and complete disappointment. Since I have only heard tales of the havoc all the smoke would wreak on the fire sensitivites of neighbors and passers-by, should I be concerned? Details: 02 WRX (figured that had to be worth extra smoke if anything), but it's been running great lately. Little bit of smoke starting as I turned the car off after sipping in the 1/3 can. Started up rendered a small, light puff after revving some to ~2k rpm. This smoke then dribbled a bit at idle for another 15-20 seconds. Smaller, light puff again after revving to ~5k and holding 4k rpm for 30 seconds. Then took it out for a 3-4 mile hard run with no smoke effects at all. So then I changed the oil and reset the ecu. Oh, I did forget to disconnect the MAF but I don't know why that woulda mattered using the BPV hose. Any thoughts on the disappointing smoke show?
My original plan was 10-15 minutes, but since Seafoam said 5 i decided to be conservative (which for litigious reasons they surely are). The car had exactly 132,713 miles as of the Seafoam. That is the other reason I decided not to overdo the time. No need to cause problems on an "experienced" engine. 2 bottles of injector cleaner since January and a new fuel filter have really done wonders. Might have been the cause of all my misfire CELs. (Which is a bit troubling to think about, actually.)
what readymix said is true, 30-45 minutes breaks up the carbon and should have you laying smokescreens
Okay, so more time is easy enough. But, I am guessing that at this point I should wait til my next oil change, right? Also, If "yes, wait" then should I also wait to run any of it through my gas tank? Thanks for the responses.
You can run it through the gas tank. But yeah, I'd wait till next oil change to start pumping it back into the engine.
Is 1/3 can not enough for a 30 minute wait? Also, given it is a 2002 with 132k+ miles, how likely is there a risk of clogging up the cats or developing leaks or something? That was part of my conservatism in the first place. The exhaust system is still all stock on the car. Again, thanks for the responses.
