Join Date: Jul 2016
Location: Central Wisconsin
2017 Hyundai Elantra Limited
1988 Toyota Supra Turbo
1982 Pace Arrow Motorhome
1986 Bayliner, Vol
Mentioned: 94 Post(s)
Quoted: 539 Post(s)
Ever since the newly formed EPA mandated this after the fact emission control device in model year 1972, the catalytic converter, been cleaning my spark plugs every 15 K miles with a walnut sandblaster, also gap them in the 25-30 mil range to prevent msifire, dumped in a can os Seafoam every 5K miles to remove carbon build up on the rings and only used so-called to tier gas. Haven''t had to replace a cat yet, with even over 220 K miles on a vehicle.
Also was part of that committee of engineers that address congress in around 74 or 75 attempting to lesson or remove carbon from the fuel, the main problems with HC's, CO, and now CO2, that was a worthless battle with an oil controlled congress, this has been going on for 45 years now, SOS, same old stuff.
Cat can be tested for blockage by removing the front O2 sensor with an adapter to put a pressure gauge on it, typically at the 2 psi range at idle, if plugged, no choice but to replace it. On some used vehicles, just replaced it myself with an aftermarket unit, kids going to school, never was that rich to buy them a new one. Neighbor was, only had one kid.
Added that second O2 sensor for secondary testing, can also be the problem. Also been attempting to develop a catalytic converter for over 40 years now to reduce NOx emissions, no success yet, already proven lean burn engines can be far more fuel efficient but do generate NOx's. Until then, we will be burning a lot more fuel.
Now name me just one vehicle, passenger type made in the USA since 1972 that didn't have this problem. EPA was very slow in commercial vehicles puffing out black diesel fuel, at any time least over 10,000 airliners in the sky, don't touch these either, definitely not NASA nor the military, but watch our if you are driving a 1.4L car.
Carbon is the problem, also why you have to change your oil every five minutes.