About a year ago I ran seafoam in the brake booster line in my Tahoe and about a week later I had to replace the injectors (not related) and had noticed when I pulled the plenum that the seafoam only cleaned the rear 4 cylinders and the front 4 were still extremely dirty. So what are you guys doing to get to the front 4? Are you poring some down the TB?
Yes. i know exactly what you are talking about.. the way i solve this problme is easy..
I Purchase 1 Can or 2 Can of Sea-Foam. remove 1 quart of OIL..
Drop 1 to two can of Sea Foam into your Intake.. let it soak for 2 days.. the rest of the Oil drip slowly into my engine oil..
it will have a hard time starting the engine.. i had to put battery charger with a ENGINE START Feature to give lots of power into the starter.. and i let it charge for about 10 minutes and keep the ENGINE start ON.
I started the engine.. it will not fire up after 15 Cranks. it slowly Start.. .. man.. everything was smoking.. I let the truck RUN for about 30 minutes by it self on IDLE.. and then drove the truck around..
hope it work for you..
just to let you know.. it will not HYDRO LOCK.. its an OIL base lubrication. it will not dry the cylinder wall. IT cleans it and lubricate it..
P.S
IF you dont have a Batter Charger with a ENGINE start Feature.. Remove the spark plugs.. that will help crank the engine..
IT WORKS GREAT FOR ME