Mazda Repair Questions? Ask Mechanics for Answers ASAP
Hi, my name is ***** ***** you check the cat converters?
they cant be checked this way, you ned to do a exhausr back pressure tes, this is done by removing the upstream o2 sensor and installing a low pressure gauge, at idle, the back pressure must be lower than 1 psi, if its higher, then the cats are partially plugged,Tim
the only thing that will restrict the flow is the cats or the mufflers, nothing else, and this test will determine if its restricted,Tim
absolutely, if it still feels restricted, then its most likely the mufflers, but the backpressure test would prove this 100%,Tim
yes, do the low pressure test, it will determine it 100%,Tim
NO, YOU CHECK EACH CAT SEPRATELY, THERE ARE 2 UPSTREAM O2 SENSORS, ONE FOR EACH SIDE, IF ONE TEST GOOD AND THE THER BAD, THEN ITS EASY, REPLACE THE BAD CAT, BUT IF THERE IS MORE THAN 1 PSI IN BOTH, THEN EITHER BOTH CATS ARE PLUGGED, OR THE MUFFLER, THE RESONATOR WILL NOT CLOG UP, ALSO, PUTTING THE STRAIGHT PIPE ON IT, WILL ALSO RULE OUT OR VERIFY THE CATS,TIM
then there is no restriction in the exhaust, what problems are you having with this?