One problem related to engine knocking noise has been reported for the 2008 Ford F-150. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2008 Ford F-150 based on all problems reported for the 2008 F-150.
The engine 5. 4 triton makes a sound that resembles a diesel and sounds like the piston is about ready to come through the block. I first experienced this approx. 3 years ago while at a drive through fast food restaurant. I immediately turned off the engine. I then restarted and the noise had stopped. The motor now still has the same issue, and after reading many forums stating the same conditions, decided to call Ford directly. The response from Ford was they know about the issue on these types of motors, but are not issuing a recall for the fix. The issue is apparently related to a know cam, timing chain issue that has to have the gears and timing chain replaced. At the owners expense of approx. 800-1200m dollars per side on this type of v8 motor. I recommend that Ford needs to do a recall on these, and fix the known issue, thus creating further purchases from consumers for future purchases of their product. If you are in doubt of this issue, just type in your search engine, 2008 Ford f150 loud knocking noise while idling, and sit back and read until you are tired of reading. Please feel free to contact me with any questions. Thank you.