On my drive home from work I started hearing some strange noises coming from the front end.... almost like gravel being spit up under the hood.
Upon closer inspection I notice an inconsistent but rhythmic knock coming from the front of the engine with an occasional "crunch". Reminds me of dropping gravel down a pipe almost.
I pulled the belt and spun every accessory. No noise to speak of from the idler or tensioner pulleys. PS pump seemed fine, AC was smooth and noiseless.
The water pump was done by me(duralast) less than 30k miles ago yet it has a slight bearing noise to it - if I had a wheel bearing making this noise without a load on it I'd say it's bad. But that doesn't explain the rhythmic knock. I did notice the occasional "crunch" when I spun the water pump though. It also sort of reminds me of a "water hammer" noise as small water bubbles work their way out of plumbing.
I started the car with no accessories and had no knock or crunch - although I notice that I had what felt like an occasional miss, probably a different issue at this point however.
So... stupid question - probably the water pump, right?
If I hadn't done the diagnostics I just did, I'd be worried about a cam bearing or bits and pieces getting caught in the timing gear/chain.
Upon closer inspection I notice an inconsistent but rhythmic knock coming from the front of the engine with an occasional "crunch". Reminds me of dropping gravel down a pipe almost.
I pulled the belt and spun every accessory. No noise to speak of from the idler or tensioner pulleys. PS pump seemed fine, AC was smooth and noiseless.
The water pump was done by me(duralast) less than 30k miles ago yet it has a slight bearing noise to it - if I had a wheel bearing making this noise without a load on it I'd say it's bad. But that doesn't explain the rhythmic knock. I did notice the occasional "crunch" when I spun the water pump though. It also sort of reminds me of a "water hammer" noise as small water bubbles work their way out of plumbing.
I started the car with no accessories and had no knock or crunch - although I notice that I had what felt like an occasional miss, probably a different issue at this point however.
So... stupid question - probably the water pump, right?
If I hadn't done the diagnostics I just did, I'd be worried about a cam bearing or bits and pieces getting caught in the timing gear/chain.