Engine Noise / Ticking, Knocking, Tapping MERGED

[eric489]

All threads with vague titles regarding engine bay noises are now merged HERE.

If you honestly feel we can diagnose an internal engine problem from a poor description or low-quality video / audio sample, give it a shot.


I own a 1997 gst spyder and there is a ticking noise comming fron the engine. It comes and goes and it mostly sounds bad at idle. I have 97,000 miles on it and i change the oil regularly. I changed it about 2000 miles ago I need help to fix the problem.

 

[GRAVEDIGGER]

Boy o boy, that doesn't sound good. It sounds like a bearing is totally wasted or something in there. Are you sure it's coming from the timing area? Does it sound like it's coming from down below the timing gears? Make sure nothing is rubbing anywhere at all that you can see. It just really sounds metallic (metal on metal) to me from the video.

 

[awild]

Yeah its a metal on metal sound for sure. Hard to tell exactly where it is coming from because it's quiet, then LOUD, and I dont want to run the car too long to find out because I dont want to have anything go terribly wrong.

 

[GRAVEDIGGER]

So, it's kinda quiet and then loud eh? Is there any way the sound could be coming from the exhaust manifold gasket area? Sometimes if the gasket has a leak, it will be really loud an ticky, especially when cold. Then when it warms up and expands it will seal up and quiet down. Dumb question: Have you checked the oil level to make sure it's where it should be? Hopefully it's not too late

 

[awild]

Yeah the oil is a good level. Doubtful its the exhaust manifold (being a jeep owner I know that sound pretty well.) It does go with the RPMs also. Hard to tell if it's louder near the timing area or louder kinda under the intake manifold.

Is there any way a starter could keep making this noise?

 

[iluvmy4g63]

i'd drop the oilpan ASAP. are your balance shafts still in there?

 

[VETTE_50_TH]

Yeah the oil is a good level. Doubtful its the exhaust manifold (being a jeep owner I know that sound pretty well.) It does go with the RPMs also. Hard to tell if it's louder near the timing area or louder kinda under the intake manifold.

Is there any way a starter could keep making this noise?

99% sure its not the starter. That sounds like a bearing to me

James

 

[awild]

i'd drop the oilpan ASAP. are your balance shafts still in there?

No idea of the bs's are in or not. I'll drop it tomorrow if I dont find anything else out.

The sound is the loudest around the oil pan / far end of transmission. Could there be something loose with the flywheel or clutch? Previous owner said it was just replaced (both of them). Noise actually went away after about a 2 min run to hear where it was coming from.

 

[crimsondragon]

Check your CPS and make sure the crank isn't grinding that shit down.

 

[awild]

Check your CPS and make sure the crank isn't grinding that shit down.

That's what I am researching now, sucks that I am pretty sure 95's are a bi*** to do.

 

[GRAVEDIGGER]

I would definately give that flywheel area a good look. Maybe take the inspection cover off and see if the flywheel looks like it's been rubbing on anything. Maybe it's in the clutch or TOB.

 

[patmorrissey72]

Anyone else have any suggestions on this?

 

[awild]

UPDATE -

I emailed the previous owner to see if he ever experienced it:

"I had that happen to me right after the clutch was put in.

I heard the noise and took it to the guy that put the clutch in. He said the flywheel had come loose enough to just virbrate a little bit but once you press the gas the force flattens it back out so it dont vibrate. He took it out and put it back on but my thought if it did it again was to take each bolt out individually through the inspection plate and put some locktite on them.

Sorry about that man. I really didnt think it would do it again once it was fixed. The guy that put the clutch in is a really good stand up guy certified and everything and works on 100+ diesel fleet and used to work at a chrysler garage til it went out of business.

It does have an aluminum flywheel which is probly part of the reason why it came loose with the aluminum getting hot and cold it will change size."

 

[GRAVEDIGGER]

Sounds like you're gonna have to get in there and see what's really going on first hand. "The aluminum flywheel is causing the bolts to come loose because it changes size with hot and cold" Yeah, and so does every other metal. Let us know if you find anything else out of the ordinary.

 

[Matt4g63]

So today I started to notice a loud ticking/knocking noise coming from the engine bay. I know that its not lifter tick however the sound does seem to predominantly be coming from the head and the exhaust manifold.

Here is what I know so far.

1.) The car does not make the ticking/knocking noise during idle. ( Most likely does, but not loud enough for me to hear it.)

2.) The ticking/knocking doesn't seems to be gone during decel, even at higher RPM's.

3.) Ticking/knocking amplifies during acceleration and tappers off at consistent speeds but sometimes is noticeable.

4.) After it was extremely cold for a few days in a row my Oil Pressure gauge showed 2-25 psi no matter the acceleration or deceleration. I dismissed this because of the gauge never really working correctly and always seems to be off. ) Also thought that the cold might have messed up the cheap gauges).

Below is the video of the car tonight:

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[viprez586]

Sounds like lifter tick or an exhaust leak.

Nice dark video by the way.

 

[kevin keener]

Sounds like exhaust leak to me, but i am a newbie. If it were me, I would remove the heat shield and look for cracks in manifold.

 

[92talontsibryce]

ok so just an update. i pulled the head off last weekend to find marks on the pistons where the valves had hit. So i thought the valves had to be bent since they hit the pistons.so i took the head to a local machine shop and they ripped it apart. the next day they call me and say none of the valves are bent. Is this possible? how can the valves hit the pistons without bending them? should i take the head to a diffrent shop and see what they say?

again here is the situation. i was driving home and i put the car in neutral and the car died. i restarted it and everything was fine untill i took it out of gear again and the car died again. Also whenevr i would shift the rpm's would drop fast untill i got to the next gear. Shortly after that my car started sounding like it does in the video.
ANy ideas?

Thanks,
Bryce

 

[92talontsibryce]

i think we might have the same problem. check out this forum

http://www.dsmtuners.com/forums/newbie-forum/320466-engine-noise-video-scares-me.html

 

[live4my4g63]

mine sounded like that and i had a bad bearing, could be lifters

 

[2gsxRuiz98]

My head sounded similar, it turned out to be mildly bent valves.

 

[indhp94]

something in the head for sure maybe lash adjuster

 

[10's or bust]

The noises everyone is refering to is coming the exhaust manifold gasket either from a broken stud or studs or just burned up exhaust gasket!!!!!!!I personally know this from experience.....just check the manifold gasket

 

[Turbo Talon DL]

The 5 threads that came up when I titled the topic were not very useful. I have a somewhat shreaking noise from my timing belt area. I JUST put this sh-t together about 3 weeks ago and driven the car a little over 300 miles on my new tensioner, power enterprise belt, Crower springs/retainers, and Manley valves. I put everything together perfectly by the book. I have this noise that is coming from what sounds like the exhaust cam maybe but when I turn the engine over by hand it makes the sound intermittently and its sort of a faint clicking noise. It wont make any pitch until the car runs but is now most pronounced when the car shuts off. Havent removed valve cover yet but will update afterwards with the disasterous news. Somebody with experience please let me know whats good.

Would a cam bearing make this or these kinds of noises? Modifications are in profile.

 

[rbwtrans]

Check your balancer to se if it's rubbing on the timing cover (the rubber comes loose). Also, I've had problems with my cam gears rubbing inside of the cover.

 

[Turbo Talon DL]

Check your balancer to se if it's rubbing on the timing cover (the rubber comes loose). Also, I've had problems with my cam gears rubbing inside of the cover.

Car was run with no covers and no pulleys installed. I thought it was the harmonic damper chirp at first until I removed all belts and eventually the belt cover and damper. I run no upper timing cover because the cam gear's studs didnt clear it.

To avoid starting a new thread I want to ask another one in an existing one. What sort of metal to metal contact could/would cause a squealing noise from the head/camshaft areas? If the pulleys were rubbing on something metallic wouldnt there be metal shaving when I pull the timing cover? I am so confused with this stuff right now...