I've read about running seafoam through the intake so I decided to try it today. At operating temperature, I removed the upper vacuum line from the plenum and attached a small plastic hose. With the engine running, I dipped the hose into the can of seafoam and let the vacuum suck out about a half a can (stopping preiodically as the rpms would fall). Smoked like an SOB but I'm sure my upper intake is clean.
Seafoam is damn good stuff! I keep 2-3 cans in my storage locker in my garage and use it on ALL of my engines. Right before an oil change (1 tank full of gas before), I load up my tank with this stuff then top off the tank and run it through the engine. Then I change the oil (some Seafoam will get into the oil) and call it good. Keeps the fuel system clean and that is what matters!!
I had a snowthrower that was runnin like crap last winter and I had a little spray bottle that I put some Seafoam in and sprayed it into the intake while it was running.......smoked like a mosquito fogger but cleaned the carb up real good and she ran great the rest of the winter.
I had a post that complained about my 95 5.0 running like crap, bad hesitation, it pretty much would lose to a UPS truck. Anyway, other than changing my PCV valve, all the vacuum lines, I truely believe using a can of Seafoam through the vacuum lines, a can with my oil change and a can in with a tank of gas made a massive difference. It smoked, burned out all the carbon build -up, now the car runs like new. Its "old-school" for sure, the kind of thing your grandfather used back in the day, but this stuff works......... brought my 1995 190k 5.0 back to life.
I had a post that complained about my 95 5.0 running like crap, bad hesitation, it pretty much would lose to a UPS truck. Anyway, other than changing my PCV valve, all the vacuum lines, I truely believe using a can of Seafoam through the vacuum lines, a can with my oil change and a can in with a tank of gas made a massive difference. It smoked, burned out all the carbon build -up, now the car runs like new. Its "old-school" for sure, the kind of thing your grandfather used back in the day, but this stuff works......... brought my 1995 190k 5.0 back to life.
I'm also a firm believer in Seafoam.
A few years ago my 05 GT with 17 K miles had a high rpm pinging problem that was happening in cooler temps. I made sure all of the CAI's connections were tight, cleaned and re-oiled the air filter, cleaned the MAF sensor, and tried a slew of different brands of gas, all without success. Next, pulled enough timing to stop the pinging, but the car was extremely unresponsive, which I obviously could not tolerate.
At a loss for a solution, I mentioned the problem to my mechanic, and he recommended Seafoam. I asked him wtf is that? After he explained how it got rid of pinging on cars that he had worked on, I dumped a can into the gas tank, and filled it up. 200 miles later the pinging was gone.
Now I use it every few months, and there's never even a hint of pinging.
