Yet another Seafoam thread...
#16
RE: Yet another Seafoam thread...
..DIY, do it yourself... yeah well heres the link, all the diy stuff is linked from the main page. https://www.hondacivicforum.com/m_142942/tm.htm
#20
RE: Yet another Seafoam thread...
Ok I pulled the CEL code, #67 Catalyst system Efficiency Below Threshold malfunctioning or defective catalyst system. My guess is that the Seafoam burnedup/knocked loose a bunch of crud, which ended up in my catalytic converter. I followed the advice for high milage, by only using 1oz twice, and 1/3 can in the gas tank. Don't get me wrong, the engine runs a bit better, but beware other high mile(164k!and counting) folks. This may explain the puffs of smoke under my engine while using Seafoam(see above post).