MY CAR FAILED TO PASS SMOG I AM CONFUSED
1995 Geo Metro • 244 miles
I have a 1995 geo prism 1.6 that failed smog because of high hc and function insp for timing my question is why the timing failed it was recorded at 10 btdc and I checked it and it is 10 btdc which is the correct timing. So I am confused why it failed if timing was checked on number 1 cylinder, revered engine timing settle back just fine idle was ok car had high co reading on smog by still within passing. Hc failed at both rpm tested
I changed the oil 4 month ago but am willing to do it before I resmog had the car looked at and they said all cylinders have good pressure and let me know that the upstream o2 sensor failed. I replaced the spark plug and wires a month ago but didn't replace the distributor cap. Belts look to be in good condition. I have no fault codes displayed. I also put fuel injector cleaner in a month before smog test. I think that covers all the maintenance/tune-up I did. But I am still confused as to whether I need to adjust the timing. 10 btdc is what I read and the smog tech but it still failed in that area. I am hoping it is just human error because 10 btdc is what I have in my car manual.
A failed HC-could be caused by ignition misfire, lean misfire and low engine compression
May 7, 2012.
May 7, 2012.
Four parameters "not completed" on (more than one)smog test. First one @ 163,359 mi. Most recent @ 164,898. Dealer says new ECM is needed. No CEL on. Fuses all ok. New battery ...
5 answers • 1996 Nissan Hardbody • 165,000 miles
I took my sunbird to get a smog test, and as i expected (due to californias new smog laws), i didnt pass. So i do a full tune up (oil change, oil filter, air filter, fuel filter, spark ...
2 answers • 1988 Pontiac Sunbird
1997 Ford F150 XLT Truck mileage: 59,000. The smog pump appears to work or cut in when it should not. It sounds like an exhaust leak, but no leak. The computer check ...
1 answer • 1997 Ford F-150 • 59,000 miles
Engine Mechanical problem 1998 Mitsubishi Eclipse 4 cyl Two Wheel Drive Automatic 150680 miles went to get car smog. did not pass due to malfuctional indicator light....but engine ...
6 answers • 1998 Mitsubishi Eclipse