Anyone know anything about emissions testing?
07-04-13, 01:40 PM
#76
No worries. Mazda likes to do crazy stuff... hell look at our rotary engines, they're the only guys stubborn enough to stick with it for so long.
As for the O2 sensor readings, they are definitely "wrong". Our rotaries like a lot of fuel to idle and the reading the factory O2 sensor picks up is really getting a lot of Air Pump fresh air jammed into it to make the mixture appear leaner than what is occuring in the combustion chamber.
I'm not confident enough to speak to how the computer uses this input, I'd leave that to someone like thewird who really understands fuel maps and things of that sort to chime in here if he has input or feedback about that.
-Geoff
As for the O2 sensor readings, they are definitely "wrong". Our rotaries like a lot of fuel to idle and the reading the factory O2 sensor picks up is really getting a lot of Air Pump fresh air jammed into it to make the mixture appear leaner than what is occuring in the combustion chamber.
I'm not confident enough to speak to how the computer uses this input, I'd leave that to someone like thewird who really understands fuel maps and things of that sort to chime in here if he has input or feedback about that.
-Geoff
11-06-13, 08:19 AM
#78
So a follow up to all of this.
My sticker was due on the Monday that just passed, so I went to Canadian Tire on Sunday for an "emissions analysis" which really just turned out to be a conditional pass fee.
The tech brought my car into the shop and I went out there to talk to him. I explained to him that I was here basically for the purpose of obtaining a conditional pass because in my opinion there wasn't much that could be done to the car for under $450 that would bring it into spec.
We chatted for a bit, he was honest that he didn't know rotary's very well (not unexpected) and I explained that I had pulled the engine, rebuilt it, but in the process of this we had ported the motor. I told him that it was unlikely that the car would ever pass an emissions test without another rebuild using unmodified ports.
He agreed and wrote up an estimate for a rebuild using parts from Mazda. (Many thousands of dollars)
Another e-test (again, horrible fail) and I was given a conditional pass.
I did have to pay $150 for the "analysis" and $17.50 for the retest (half price).
-Geoff
My sticker was due on the Monday that just passed, so I went to Canadian Tire on Sunday for an "emissions analysis" which really just turned out to be a conditional pass fee.
The tech brought my car into the shop and I went out there to talk to him. I explained to him that I was here basically for the purpose of obtaining a conditional pass because in my opinion there wasn't much that could be done to the car for under $450 that would bring it into spec.
We chatted for a bit, he was honest that he didn't know rotary's very well (not unexpected) and I explained that I had pulled the engine, rebuilt it, but in the process of this we had ported the motor. I told him that it was unlikely that the car would ever pass an emissions test without another rebuild using unmodified ports.
He agreed and wrote up an estimate for a rebuild using parts from Mazda. (Many thousands of dollars)
Another e-test (again, horrible fail) and I was given a conditional pass.
I did have to pay $150 for the "analysis" and $17.50 for the retest (half price).
-Geoff
Thread
Thread Starter
Forum
Replies
Last Post
