Ok, i have a 1990 f250 w/ 460 and im gettin some noise problems. I am gettin some noise from the engine after i get off of the highway so I take it to my mechanic and he says it sounds like a lifter. He said this is due to sludge and such. I recently switched from 15-40 oil to 10-30 and since ive switched ive had a lot of noise problems coming from the engine since i switched. could this weight change in oil be the problem??

 

sure u dont have a bad filter as i bought a fram and after two filters i cut one open only to find TWO holes where oil goes through filter where there should be many motorcraft and prob fixed

 

I'm runnin NAPA gold filters as I have been forever. Ill try a motorcraft and see if it works, where do can you get motorcraft brand? Schucks? Autozone even?

 

Walmart actually has them here, as weird as that is.

 

Why does this sound so familiar? Oh that's right it happened to me. Before jumping the gun though and changing lifters out check the whole valve train. Here's what happened to me. I was driving home and thought I heard a unusual rattle. I changed the oil and filter. Started the engine up and didn't hear anything. Drove it around the block a few times to be sure and the rattle came back. Pulled the valve covers and noticed a loose rocker. Tried to adjust the rocker arm but the lifter was collasped. Bought a whole new set of lifters and installed them. Set the valve lash several times but would get a tick or rattle here and there. Found an exhaust leak, changed the header gasket. The leak was gone but I would still hear a little rattle. Drove it around for a total of 15 miles from the start of hearing the rattle. Changed the oil and saw a nice shimmering of metal it in. Took off the oil filter and opened it to find a bunch of fine metal particles. Pulled off the oil pan and sure enough more metal. I tore the front of the engine apart to find the cam gear bolt had backed off. So long story short, invest in the $50 in gaskets and pull the timing cover and intake off. Remove the lifters and keep them in order from where they came from. As you pull each one out look at the bottoms and pistons to see if there is any obvious damage. The total time to do this job is maybe a full day but you will know for a fact what is going on vice shot gunning parts at it and costing you an engine rebuild.

 

Listen around in the engine compartment. Could also be a pinhole exhaust leak.

Brad

 

The thing is, I can't hear it at all going down the road. But as soon as I come to an idle i hear it. Say your in the driver seat, the sound is coming from the left side of the engine. I cant pinpoint the sound at all.

 

The is pretty much what mine was doing. But once I heard it I couldn't stop hearing it you know?

 

i hear ya its drivin me crazy.

 

Use a piece of hose and listen for an exhaust leak. Same trick works to find a noisy lifter or other noises. A wooden dowel on the valve cover or block also works really well.