I bought an ex-Uhaul truck and it sounded good and ran great until I got it home, about 6 hours travel time with a load of 5,000 lbs of grass seed. The next day when I started it, it made a really bad thumping sound coming out of the intake. I sounded like a bad exhaust leak. The engine is still very powerful, starts instantly, idles good, runs good, hits on all eight cylinders, and has no other visible problems. Suggestions have been a burned exhaust valve or a cam lobe wiped out. The guy I got it from said "he had told me about the problem, he thought. yeah, right". He said if you ran it for 30 to 45 minutes, the noise, which was an air flow flap, would stop. Naturally, we tried and that didn't work. I could sure use some help. thanks, Eddie
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I would probaly agree, these are very reliable engines.Most of the time a bad wrist pin wull be noisy at load and higher rpms, not at idle in gear.Cracked flywheel is possible , loose converter bolts is unlikely since ford uses a crimped bolt.These engines sometimes will build up carbon on top of the piston and usually running a can of SEA FOAM through the intake will take care of it.The carbon can cause a slight knock and may sound like a wrist pin or rod bearing.Good luck!
when you replace the master cylinder, your are supposed to pump it up manually before you install it. If you don't, you'll have to sit there and pump the brake pedal a couple of thousand times as one almost microscopic air bubble at a time escapes the pressure tube and back fills with fluid. once you can push the pedal repeatedly without any bubbles escaping into the reservoir, then bleed the brakes. Starting with the farthest, usually the Right Rear and work your way up. Make sure you keep the fluid level topped off. If it sucks air once, you have to start all over.
Tell them you heard about a recall for the CAM PHASERS. When the noise is present and you rev the engine to 2000RPM the noise will fade away. This verifys the CAM PHASERS are acting up.
Usually the sound progresses to the DIESEL level. Further use can damage the engine. There is a service bulletin for this problem. Yours must be an early 2009, last I heard the problem was for 2004-2008 models with dual cams.
follow top hose from radiator to engine, it connects to steel tube with a plat and 2-3 boltshold plate down. sypgon radiator down into clean bucket, remove bolts, take out thermostat, clean both mounting surfaces very clean until only metal showing put in new thermo put gasket on tighten bolts and add antifreeze
I had the same sound that you mentioned. I found it to be the roof rack sliding backwards. Tightened it and the noise went away. Occasionally, it will make the same noise, depending on the wind, but I have always found it to be stopped by tightening the roof rack. Hope this helps.