October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.
Possible Causes
Snow, plastic bags or other foreign material may restrict airflow at air inlet.
Misrouted air cleaner ducting.
On engines recently repaired, rags or cap plugs may have been inadvertently left in an air inlet pipe.