66F100Again
Well-known member
- First Name
- Bill
- Joined
- Mar 7, 2021
- Threads
- 12
- Messages
- 110
- Reaction score
- 131
- Location
- Massachusetts
- Vehicles
- '66 F100, '11 Mustang GT, '21 F150 Lariat
Good that you shared the recording of how it sounds. My 5.0 doesn't make that noise, so the noise isn't 'normal.' The exhaust sounds perfect, so the engine may not be skipping or anything. Is the oil level totally full? How many miles have you put on it? Has it made the noise since day 1? Maybe try changing the oil and putting in 5W-30 (as required); maybe someone at factory or dealer put in 5W-20 by mistake? It does sound a little like valvetrain noise.I have this that comes and goes. Not sure if it's a exhaust leak or what. Maybe cylinder deactivation under load?? At idle and free rev truck sounds like a sewing machine. More noticeable in sport mode to
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