donalds
Elite Explorer
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- 1999 ford explorer sohc
Hmm, hard to tell from the video but that sounds more like a pulley rattle to me caused by a bad bearing. Check all your drive belt pulleys with a simple/inexpensive stethoscope tool. Put it on the unit that the pulley is driving and it will pick up the noise from the pulley’s bearing. If not, and it may be internal to the engine, try changing the oil and substitute one quart of oil for one quart of Lucas Heavy Duty Oil Stabilizer or Lucas Oil Stop Leak (similar products). They really do work. I have had great success with using Lucas products in many vehicles to quiet noises, stop minor leaks, etc. They are safe to use in motors and transmissions. Follow the directions.
I hope y'all aren't replying to me this video is a example of the noiseohv timing chainand the tensioner
OR
the cam synchronizer
are both suspect for that noise at cold start
To eliminate hte belt driven accessories as the culprit remove the belt and then start the truck
While the belt is off try spinning your pullies by hand
It could be as simple as a bad idler or tensioner pulley in the serpentine system
If it is inside the engine then I would suspect either the synchro or the timing chain
marbling you can clearly hear it when the car idles down classic sound
Something with the offset piston wrist pin