19Comanche 87 Posted February 7 Share Posted February 7 I've been trying for months now to get my 1987 Comanche to pass emissions in DE. it keeps failing with high Carbons. I've replaced the o2 sensor, ran smoke tests for leaks, and tried running "Guaranteed to Pass" in my fuel. when i bought the truck it was tagged in Maryland which didn't have emissions tests. and the charcoal canister wasn't hooked up (red Flag). could the charcoal canister be bad? any ideas as to what is make it fail? its the 4.0l inline 6. its also failing the gas tank pressurizing test. could these issue be related? any suggestions would be greatly appreciated. Quote Link to comment Share on other sites More sharing options...
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.