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Question

Failed smog test on 92 mazda miata. No (rpm) over the limits. Car has no egr. Any ideas?

Submitted: 43 days and 9 hours ago.
Category: Car
Value: $23
Status: CLOSED
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Optional Information

Year: 1992
Make: Mazda
Model: miata
Engine: 1.6 liter

Already Tried:
nothing

Posted by Lil Hammer 43 days and 7 hours ago.

Info Request

HI XXXXX,

 

What did the car fail for hc, co or nox?

43 days and 5 hours ago.

Reply

Im not sure which colum is nox. I know HC and CO% both passed, but the next colum over only says no(rpm) Max847 Ave237 Meas1122 Then under those numbers 786 199 946

Accepted Answer

Ok First thing you need to do is make sure the car is running at operating temp. Check the coolant , make sure it is full. Start the car probably will take 5 to 10 minutes for it to warm up. Check to make syre the thermostat is open by feeling the upper hose it will be hot when the thermostat is open. Next just wait for the cooling fan to come on. If all is ok and the car is not overheating then you will need to replace the catalytic converter.

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Expert: Lil Hammer
Pos. Feedback: 96.2 %
Accepts: 
Answered: 10/10/2009

ASE Certified Technician

Master ase technician, Maryland state inspector

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