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My 4runner sounds like a sprinkler!!!

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Old 09-16-2010, 02:57 PM
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My 4runner sounds like a sprinkler!!!

What's up everyone? So this noise I'm hearing at idle has been annoying the crap out of me for the last few months! When idling my ride sounds like a sprinkler, ya know the old ones that go tss tss tss tss tss and then spin back around. I thought it sounded like a tensioner or pulley but I'm not sure. I did just have the timing belt, idler pulley, and tensioner replaced and it still makes this noise!! Any input on this would be much appreciated! Thanks.
Old 09-16-2010, 03:12 PM
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Vacuum leak?
Old 09-16-2010, 03:28 PM
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Really bad exhaust leak?
Old 09-16-2010, 07:50 PM
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over or under torqued idler pulley would be my initial guess-if you are tech savvy can you post up a video link with audio?
Old 12-09-2010, 10:49 PM
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Resurrecting this one...

Could over- or under-tightening the alternator belt make such a sound? I've got a similar noise under my hood. Sigh.
Old 12-09-2010, 10:57 PM
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Hey everyone thanks for all the replies. I've been shopping ISP's so I haven't had service for a bit. Anyway, I think I've narrowed the problem down to my Valve Clearence. I think it was wishful thinking that it could be something other than the lifters/valves. On the brightside, 3rd Gen Runners use solid lifters so instead of having a collapsed lifter and having to totally replace it, I can, most likely, do a simple(HA!) height adjustment.
Old 12-13-2010, 02:09 PM
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Originally Posted by J-One
Hey everyone thanks for all the replies. I've been shopping ISP's so I haven't had service for a bit. Anyway, I think I've narrowed the problem down to my Valve Clearence. I think it was wishful thinking that it could be something other than the lifters/valves. On the brightside, 3rd Gen Runners use solid lifters so instead of having a collapsed lifter and having to totally replace it, I can, most likely, do a simple(HA!) height adjustment.
does it sound like a sewing machine?

if so i would say lifters
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