I failed inspection on the CO readings. Here is a breakdown: HC 190 High Speed and 182 Low Speed (Pass). C0(%) 3.53 High Speed and 2.98 Low Speed (Both Failed). C02 (%) 12.1 High and 12.5 Low. 02 (%) 0.2 High Speed and 0.2 Low Speed. NOx (ppm) 882 High and 1122 Low (Pass). Dilution (%) 15.6 High Speed and 15.5 Low Speed.
I put a Motorcraft carb on since last inspection. I think the cat and PCV valve is still good and the jeep has NEVER run better than it does now. Of course with the Motorcraft carb just about all of the vacuum lines went into the trash can.
The only weird thing going on with the jeep is a high pitched whistling sound when the jeep initially accelerates under load. Almost can't be a vacuum leak unless it's in the throttle body somewhere. I may have a manifold leak? Who knows, and if it's not related to the CO reading then I can live with it at this point.
Can anybody give me a checklist of things to try?
Thanks you for your help.
I put a Motorcraft carb on since last inspection. I think the cat and PCV valve is still good and the jeep has NEVER run better than it does now. Of course with the Motorcraft carb just about all of the vacuum lines went into the trash can.
The only weird thing going on with the jeep is a high pitched whistling sound when the jeep initially accelerates under load. Almost can't be a vacuum leak unless it's in the throttle body somewhere. I may have a manifold leak? Who knows, and if it's not related to the CO reading then I can live with it at this point.
Can anybody give me a checklist of things to try?
Thanks you for your help.