06-07-2022, 04:00 AM
Hey guys
I have a 1996 geo tracker 16v MFI, 2WD 5 speed.
I have a new CAT but I'm failing smog in California due to high HC. Everything else on the smog report is passing with flying colors.
I've put in new spark plugs and wires, new sensors, new dizzy, did timing, etc....I think its running rich during idle only...which is why Im seeing high HC on the "15mph" smog report.
A mechanic told me based off the smog numbers that it could be because my spark is weak.
I tested a plug for spark engine cranking, and it looks like the plug is firing weak (I see an orange / yellow spark - not a bright white / blue spark).
So I changed my distributor with a new one...same thing. The dizzy has the integrated coil and ingiter, so I assumed that would fix my problem, but nope!
I also changed the CAS sensor under the oil pan. NO LUCK.
What else could be causing weak spark? Noise Supressor Filter?? I have NGK plug wires which are 6 months old so I dont think its that.
Could it be the alternator not producing enough current? During idl, the battery reads 14.3 volts, so my alternator is good - right?
I have a 1996 geo tracker 16v MFI, 2WD 5 speed.
I have a new CAT but I'm failing smog in California due to high HC. Everything else on the smog report is passing with flying colors.
I've put in new spark plugs and wires, new sensors, new dizzy, did timing, etc....I think its running rich during idle only...which is why Im seeing high HC on the "15mph" smog report.
A mechanic told me based off the smog numbers that it could be because my spark is weak.
I tested a plug for spark engine cranking, and it looks like the plug is firing weak (I see an orange / yellow spark - not a bright white / blue spark).
So I changed my distributor with a new one...same thing. The dizzy has the integrated coil and ingiter, so I assumed that would fix my problem, but nope!
I also changed the CAS sensor under the oil pan. NO LUCK.
What else could be causing weak spark? Noise Supressor Filter?? I have NGK plug wires which are 6 months old so I dont think its that.
Could it be the alternator not producing enough current? During idl, the battery reads 14.3 volts, so my alternator is good - right?