Hey guys what do u think this is? I think it's the lifters but not sure.


That's the YouTube link check it out

 

Bent valves

 

Thanks I'll check em out I jus took it out of a running car but before I took it out I heard the noise but it wasn't so loud

 

First things first stop running that motor. That doesn't sound like lifters to me. It's pretty harsh. Pull your valve cover off and investigate. It will take 5 minutes and you will have a better idea what is going on. You will know immediately if it is a valve problem.

If you can't figure it out by looking inside I would do a leakdown test. While doing that check the timing belt. I can't stress this enough stop running the motor until you figure out what is going on. So no compression test.

 

I have... I just ran it for the video ...also what's a leak down test?

 

A leakdown test (also known as a cylinder differential test) pinpoints where you are losing pressure. You position the cylinder at Top Dead Center so all the valves are closed and pressurize the cylinder. The difference between what you have the air set at on the air compressor and what you read on the leakdown tester (usually expressed as a %) will tell you how much air you are losing. For example if your compressor is set at 100 psi and you read 90 psi on the tester you are losing 10%. A good motor will be 10% or less.

You do this test BEFORE you take your car apart. If it is leaking compression you should be able to trace the problem by listening to where the air is going. Open the oil cap and radiator cap. If the air is in your crankcase You'll hear it in your valve cover. If you hear it in the intake it's the intake valves. If you hear it in the exhaust it's the exhaust valves. If you see bubbling in the coolant system your head gasket may be bad. Etc etc.

You will need tools, compressed air, and a tester. You can buy a tester, build your own, borrow one from a buddy, or possibly rent one from an auto parts store. A quick google/site search should point you in the correct direction if you have any other questions. I will continue to assist though.

 

Thanks ag I'll get on it

 

Is my signature not showing up? I can't see I am mobile. I'm Scott lol. Ag is the elemental symbol for silver

 

Does this engine still have balance shafts?

 

It's not showing up Scott..... Thanks for the correction and yes Barney the balance shaft is still in

 

I had a DSM make that sound. The shafts turn at twice crank speed and what I heard in the video sounded like too high a frequency for anything else. I mean it could be something simple like the flywheel hitting the tin. Anyway, keep that in mind, frequency twice that of the crank is a balance shaft.

 

Doin a balance shaft eliminator is on the books..... It was the first thing I thought of.. But still goin to do the leak down test first