Chirping noise coming from rear of car/engine

[Ressler]

So I posted about this in my into thread but figured it'd get more discussion in it's own thread. I am currently trying to find a way to post video (if you have an Instagram I put one on there @resslerbmx) anyways, it's a pretty loud chirping noise, happens when idling and anytime I'm on the gas, it's getting annoying and it's finally the weekend so I want to fix it. I've heard it's possibly the spark plugs, if so I want to replace them all, I've also heard belts/pulley bearings. Is there anyway to test this? Been searching for an answer all day and don't want to bring it to a shop, I'd rather give it a shot first. Thanks guys! Appreciate any and all help

[thom4782]

Have you removed the engine access cover from behind the seats to see if the noise is coming from that area. That's where the pulleys are. Mine made a chirping sound just before the water pump pulley fell off.

[Ressler]

How did yours sound? Mines pretty loud and gets more consistent as rpm's go up.

[woodsman]

I've heard the AOS can cause this- indirectly I think. You could give the accessory drive belt a light spray with WD40 and see if that solves the problem. For pulley bearings you can push a 1'long pipe against each mounting bolt and with your ear at the other end, listen for a bad bearing. If there is one it will be obvious.

[landrovered]

My IMSB chirped just like a bad water pump. I took the serp belt off and started it and it still made the noise so I shut it off and then planned my clutch/gearbox/flywheel/IMSB extravaganza.

[Jamesp]

Take the belt off and start the engine - Chirp = not the belt or driven component. No chirp = belt or driven component. You can trouble shoot using the other posts in this string from there to find the bad component.

[tommy583]

I had two loose spark plugs that caused a chirp. A 1/4 turn on each one stopped the chirping.

[landrovered]

Lucky ducky

[Jamesp]

Glad to see you fixed it easily.