Engine Code 26 & Engine Noise When Starting, 2 Flashes, Pause, 6 Flashes Options

[6GenCircleLghts]

So I just got this engine code today. What would be first priority to fix? 308,000 miles.

Book says:
Diagnosis - The air/fuel ratio is overly rich

Trouble Area:
Injector Circuit
Injector
Air Flow Meter
Cold Start Injector
ECM


As far as this engine noise, it only happens when it's pretty cold outside like low 30's or below.
http://youtu.be/EUxYJywN87k

[6GenCircleLghts]

does it run smooth? id run some injector cleaner through it. and when was the last time you replaced the primary o2 sensor? they should be changed with the spark plugs...

and for the knocking, probably unrelated but its probably rod knock or piston slap

-Injector cleaner made the light go off.
No it does not run smooth while driving, I get engine surge, doesn't matter what gear or how fast. I use to have a low idle at 300RPM but that was fixed by installing an EGR valve.

The noise when I start my car is my starter, I just didn't know why it was doing that, definitely not a rod knock or piston slap.

What would be first priority to fix? 308,000 miles.

rotor, cap and o2 sensor if they haven't been done

air filter obviously...

-I've done air filter, plugs, wires, cap, rotor, and coil within the past 10,000 miles, but I haven't done the o2 sensor for over 100K miles, but should I do both or just the first/top one?

the sound is your starter going out. it need the brushes replaced

-It doesn't make that noise at all though when it's warm outside like today 54F.

This post has been edited by 6GenCircleLghts: Jan 12, 2013 - 3:52 PM