THIS freaking SOUND!!! Help, please!

[tiger]

I have recorded the sound that my car is making... I tried removing the P/S and Water pump belt and cranked the car but the noise was still there... It's coming from the front center of the engine.. the front cover maybe... it's kinda loud and a little embarassing. It sounds like it's coming from inside... could something in there be making this noise? I suspected the crank pulley but there are no bearings that could make this sound... I sprayed the crap out of it with WD 40. I wonder if anyone has had this problem before. Thanks!

http://media.putfile.com/MOV02793---------

[DjPantsSpecR]

sounds like a delicious timing chain problem.

possibly something has broken off and is floating about.

or possibly the excess timing chain slack has broken one of the lower timing chain guides, they are only plastic and i just removed one broken one from a motor

don't think you'll be able to figure this one out without pulling off the timing covers

[Watashi wa Sake]

Like DjPantsSpecR said it sounds like a timing chain problem. It is quite common on KA engines for this to happen.

[tiger]

so the sound is familiar? I was looking at my SR block today and saw that one of the guides was sorta spring loaded and would flop back and fourth... i saw the allen wrench style bolt on it... could it be this one... it might have a bearing type thing on it.

[Deadrodent]

sounds similar to my timing chain rattle...probably should check out the write-up's on the timing chain guide's removal.

[Watashi wa Sake]

Well here is a link to a guide to tell you how to fix the rattle problem on a KA engine.

http://garage.projectraine.com/

Goto 'guides' and then click on the link 'Fixing the Timing Chain Rattle (DOHC)'

Let him know if you found it helpful.Hope that helps a little.

[tiger]

wow that's a nice write up... those guys really took their time with it. Next day I dont have to work I will take the front cover off and remove those guides. Dont you hear a whirring noise also? Or is this just the common rattle problem?

[Neejay]

You DOHC people are lucky all you have to do is remove the guide.

[sideways1688]

in mot saying that its NOT a timing chain probally because it could very well be but im both my ka24de and ka24d i had the same noice problem and what it was was the hydrolic lifters were not pumping up with enoguht oil os they wouldnt stay directly on the valves at low RPM's such as idle and because hydrolic lifter are built into the rockers

1you either need to replace those rockers and to check for bad rockers you take the valve cover off and you hit on them and if they bounce a little or a lot then thos are bad2 i cant remeber the naem off hand but its an oil additive that you can put in and it will fix the problem

but i would most def try that b4 messing with the timing chain bc that could cost some money if you dont know what you are doing

[tiger]

thank you for more information... i thought the thread had died. :-( Well... the noise occurs in all rpm's im sure cause i can hear it when i'm going down the highway.... the noise starts getting loud when the engine warms up... if that gives you any ideas let me know... did yours do it?

[Kenrik]

Tiger your sig... "A Girl who CAN drive" Everyone knows women can't drive... !?!?! j/p

[EstoMax]

http://media.putfile.com/engine_noise

this is what mine did .. and that is a rod bearing..

but then again yours does it all the time, my timing chain wasnt nearly as loud as yours there though.

[tiger]

Not your everyday normal girl here... i know you were j/p. hehe.

I remember listening to that sound on your thread. I think I posted to it. Well, that noise is the least of my problems right now so i'm going to worry about it later. I dont think it's going to hurt if I just wait a little longer. It's not a bad rod bearing so I can deal with it for now. Well, who knows where this whirring rattle sound is coming from ... i'll find it out later. Thanks for all of your help!

[tiger]

Ok, guys... If your car ever starts making that noise...just know it's bad... my water pump started leaking while I was driving one day to downtown nashville...... I didn't notice that my engine was getting hot.. I dont know how long i drove it with it hot like that... I just looked down when I was parking at my final destination and noticed... on the way back home I blew the head gasket out and spun a rod bearing.. it just died... started burning oil and junk out of the tailpipe. I noticed the car was getting weaker so I just drove very slow... I kept it at 2k rpm's and then it got so much worse that I had to drop the rpm's more... eventually it gave out and just died on me. I knew that squeaking whirring rattling type noise wasn't good.. it got louder every couple weeks... I hope this will help someone in the future if they get this problem.. I think previous owner ragged the **** out of it.

[NateDogg]

Sorry to hear that. So do you think the noise was the water pump bearing?

I've had a noise from the alternator before because it wasn't retracting from the flywheel. For noises you really have to get a stethoscope or a long screwdriver to put your ear on in order to find out where it really is.

Better luck with your new engine! (Is it an SR?)

[DjPantsSpecR]

Yes, i also hate it when my alternator doesnt retract from my flywheel... ha just kddin man we all know what you meant, i think you were just trying to put down too many thoughts at once

tiger that sucks so bad, i have worse stories but they never killed my engine, which is why that sucks so hardcore..... oh wait my spun rod bearing story is WAY dumber than yours so ill just shut up now....

[Kenrik]

Tiger sorry to hear it babe.. you're going to put in something better now right Ohhhh I know!!! do the Nissan Titan V8 Swap !!! The extra weight up front should help with drifting.. Remember the Drfit king said the S13 does not have enough front end weight (I took offence at that remark!)



Not from a titan but cool none the less...
Modified by Kenrik at 10:26 PM 9/14/2005

[pr240sx]

At least you guys (and girls) know what is making that noise!!.My car makes like a moaning sound, everytime I start it cold (mornings or engine cool)Have tried running the engine without ANY beltsStill therethe moan vaires with RPMs but disapears or fades after 3000 rpms (engine cool) or after the engine warms upOil viscosity does not helpsOil filter does not helpsNormal oil pressure

What could it be?

[tiger]

thanks you guys... I have an SR tha ti brought back wiht me but it's in pieces.. i have to reassemble a nd rebuild it... :-P I am pressed for time right now so I don't know when i'm going to get around to it. I hope that I will soon.. i have a friend that's going to help me.. I have never rebuilt a motor before. Pr240.. the moan isn't your power steering is it?well if you took all the belts off i dont think it would be it.. anyway... hmm..

[pr240sx]

Nope, is no the power steering

I was looking at the FSM the other day. May be is the oil relief valve.

The thing is that once the car is warm up, the noise is gone!

[Kaikias]

Sounds like the noise my car was making when it had really low oil pressure, there is not enough oil pressure to put tension on the top chain. Causing the chain rattles against the top of the cover or chain guide. Could explain the spun bearing. When my car started making that noise I took of the valve cover and could see the chain move 3 inches up and down when I gave it gas. Sorry about the motor

[dickie]

mines making the same noise, im opening it up this weekend to investigate the source. im thinking its just the upper guides but i will be checking the whole area, if i can steal my gf's camera ill share some pics of hte experience with yall.

[skydragoness]

Sounds like the noise my car was making when it had really low oil pressure, there is not enough oil pressure to put tension on the top chain. Causing the chain rattles against the top of the cover or chain guide. Could explain the spun bearing. When my car started making that noise I took of the valve cover and could see the chain move 3 inches up and down when I gave it gas. Sorry about the motor

^Gah. Yes. The majority of timing chain issues that occur after the top two useless guides are removed is from bad oil pressure and lots of gunk keeping the tensioners from moving freely. The KA my bf pulled from his $500 fastback (jealous--yes--but my coupe is nicer) had 160k on it. We have no idea what happened to it. Although the lower guide he removed was seized up, so I suppose it was that, the rods were fine, the valves/bearings were fine. Time to go KA-T

Tiger, nice to see another female member (one that isn't an attention whore/ditz, lol) Planning on putting together the SR? I guess that's a given. Good luck!

[Neejay]

^Gah. Yes. The majority of timing chain issues that occur after the top two useless guides are removed is from bad oil pressure and lots of gunk keeping the tensioners from moving freely. The KA my bf pulled from his $500 fastback (jealous--yes--but my coupe is nicer) had 160k on it. We have no idea what happened to it. Although the lower guide he removed was seized up, so I suppose it was that, the rods were fine, the valves/bearings were fine. Time to go KA-T

Tiger, nice to see another female member (one that isn't an attention whore/ditz, lol) Planning on putting together the SR? I guess that's a given. Good luck!

Im assuming this was a DOHC?

[skydragoness]

Im assuming this was a DOHC?

Yesh. The funny thing is, my bf bumped into the guy that owned it before the guy who traded it into the Nissan dealer that my bf works at. Turned out he did a lot of work to it and sold it to ' some punk kid' early this year which probably explains the short life it had. Now, it lives again with the KA from my deceased coupe. Took it to the beach, runs like a champ (then again my previous S13 was a creampuff )