Engine noise diagnostics

[userlain]

So my engine has been making some wierd sounds for a while(4-5 months) and I really never paid attention to them. Until now.

I am trying to make the car run for as long as possible, and wanted to confirm some engine noise.

(please keep in mind i have done a seafoam treatment)

Noise 1: Jingling at 1000-2250 RPM. I'm not sure what this is caused by but literally sounds like a jingling. It's pretty fast and sort of soudns like messed bearings, but really doesn't have the dullness of sound a bearing does. It is much more bright.

Noise 2: A noise that sounds like really loud lifters. The sound persists at all RPMs and there is no change when using different oil types(dino to synthetic and back again).

Noise 3: This sound developed more recently. I believe this sound is originating from the drivetrain. When accelerating from a stop, there is a really loud rattling. It almost sounds like a hole in an exhaust pipe. However, when I engage the clutch and rev. the engine, the sound is no longer present. It is only present on acceleration from low speeds and rpms.

Thanks for your input, guys!

[es250nut]

Hmmm #2 sounds a lot like what has happened to a couple of my 3SFE engines. It might be the main bearing is worn enough that the piston is tapping the head. I've replaced 2 engines because of this. On the up side I usally got 20,000 to 30,000 miles on the engine after the noise started...

#3 could be the last stages of the process as there is more stress on the main during acceleration.

[terrastrife]

number 3 might be an exhasut leak :P lol .. with the clutch in theres no engine load so it wound sound different.

[userlain]

Originally Posted by terrastrife

number 3 might be an exhasut leak :P lol .. with the clutch in theres no engine load so it wound sound different.

I mentioned that when reving the engine, even at high revs, it does not do this.

[leasaunce]

i think you need to clean the upper engine........