Whatcould cause my car to run rich???

boostwhat

Registered User
I took my car to work and put it on a scanner and it said "output always too rich" or something of the sort. Sure enough I pulled a plug and it was BLACK. So what would cause this? It sad canister purge ckt fault yesterday so I replaced the valve. It ran great for about 10 min after putting it on and the began to idle crappy again. What gives? Anyone have any ideas? Thanks Derek
 
My car puts out a black cloud at WOT that would make you think it runs rich but it's not 12.6 to 1 AF. you might have the same proplem where your cats no longer burn off an left over gases.
 
What could car to run rich

I had the same problem to the point it would hardly run. Changed cam and temo sensor, problem gone.
 
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