allsierra123

I have a tick in my engine. Only happens after its warmed up. And I can only hear it at idle. Didnt notice till after the last oil change. It hasnt been overheated since I owned the vehicle Almost a year now. It has around 200k so it is not surprising that its ticking. Oil pressure on the gauge read at 80 when it is first started and around 65 after its warm and cruising. But it does drop to about 45 when at idle and the ticking occurs. Any Ideas whats going on with it or is it just tired?

allsierra123

Here is a vid of the sound.

salad

What filter are you running?

mrfajita

Does it make it sound like a diesel? Its probably lifters, mine do that and I have 134k, and everyone I know who owns a Jeep has a lifter tick. Its kind of normal for these engines.

allsierra123

Cone filter, Until I can plumb in a more permanent solution. Yeah thats what I have been thinking it was. It has kind of high mileage on it so I wasnt sure.

salad

Sorry, I meant oil filter. FRAM has been known to cause the exact behaviour you're talking about.

allsierra123

Its a carquest which is made by wix.

Firestorm500

If your oil pressure readings are in fact correct, they sound high.

Should be 40-60 on startup, 10 PSI at minimum for every thousand RPM when fully warmed up, and 13 PSI at hot idle.

The clattering is valvetrain/lifter noise. They are not adjustable. To replace the lifters, the head has to come off.

You should be using 10W-30 oil with no additives. Either conventional or synthetic.

allsierra123

Dunno if the gauge is indeed correct or not. Im using 10w 30 With no additives. Its not synthetic. But the gauge has always been consistent but who knows if it is correct.

Firestorm500

Well I guess you could plumb in a mechanical gauge to check it. If you're curious.

Derision

Mine sounds just like that. It's the lifters.

allsierra123

Its not too bad. I worked for quite a few years as an equipment operator. So it made me very obsessive about sounds noises and keeping an eye on gauges. So I notice every little creak clack and groan. Just force of habit. If our rig blew up on our watch we spent sometimes weeks on garbage detail or on the end of a shovel. So now I do the same with the jeep trying to learn all its sounds.

GreyDog

13!?!??

My oil pressure never drops below 30. Ever. It stays right around 40-50, goes up or down according to accel or idle or whatever.

So that's bad?

And I am pretty sure, along with everyone else, that the noise is lifters. But just in case, check and see if it is louder at the tranny.

Firestorm500

13 PSI at hot idle (minimum) is Jeep specification.

KJamesJR

My oil PSI reads 25ish, minimum at hot idle. 30PSI on mine is not uncommon. It used to read 8 before I put in a new sending unit. I'm also using 10w 30. If your pressure is reading 45 (high), perhaps it's not at 210 degrees yet. The weather is still cooler where I live, so it rarely hits 210 on the temp. Thus my higher pressure at idle. I would however say I have a rather healthy engine.

80 at idle is high. 45 at temp is still high for idle. It could be your oil pressure is really low, and your sending unit is giving you a false reading because it's been had. When reading 45 at temp, it could really be at 5. I would check it with a pressure gauge. I had a hard time finding a gauge where I live so I just ordered out the sending unit. Was probably about the same amount of money as a gauge anyways (around $30).

Get that checked, your oil pressure. If it's really reading low, then try an additive for a short while. Like Lucas or something comparable. If the tick goes away, or is dampened, then you'll know it's a lifter or something else internal.