-
Masters Degree
Array
You're running extremely lean at 0.00% CO and high NOx. It should be closer to 0.30-0.40%. CO is the lean/rich indicator. NOx tends to go down as CO goes up and HC tends to go up as CO goes up.
First thing to check is the EGR. Get a cheap vacuum pump from Harbor Freight and with the engine warmed up and idling, attach the hose to the vac nipple on the EGR top hat. Apply a few inches of vac (one squeeze on the handle). You should hear the engine stumble as the valve opens up. If not, either the EGR passageways are plugged or the diaphragm is broken.
Posting Permissions
- You may not post new threads
- You may not post replies
- You may not post attachments
- You may not edit your posts
-
Forum Rules
Bookmarks