Date registered: May 2007
Vehicle: 2003 Mercedes Benz E500
Location: San Francisco Bay Area
Mentioned: 0 Post(s)
Quoted: 1 Post(s)
The Seafoam treatment...
for clearing the air injection passages on the M119 engine that is posted on the Internet goes beyond just putting the Seafoam in the fuel tank, it includes putting it into the oil/crankcase and pulling a small vacuum line for direct injection into the intake manifold...
Reportedly it works, IF the carbon deposits in the air passages in the heads are not too hardened; however, sometimes there is no option but to remove the heads and sandblast the deposits out. Expensive, to say the least.
I wish you luck,