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□AVANTE□

Engine sound after 2800rpm

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When ever I rev our 1300cc swift past 2.8k rpm it starts making a 'continuous high pitched whoosh' sound..something like a thousand samurais slicing the air with their katanas or something. Jokes aside, The sound would increase with the revs and when i drop the accelerator immediately, it would make a whoosh sound again and just idle normally.

Note that it is not a squeak as those usually originate from the timing/serpentine belt. It seems to be coming from the intake plenum. Mileage is 100k , oil changed recently, timing belt changed an year ago, new gasket as well. I have to take this thing on a long trip in 3 days so for peace of mind I need some advice.

Thanks in advance!

Edited by □AVANTE□

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24 minutes ago, □AVANTE□ said:

When ever I rev our 1300cc swift past 2.8k rpm it starts making a 'continuous high pitched whoosh' sound..something like a thousand samurais slicing the air with their katanas or something. Jokes aside, The sound would increase with the revs and when i drop the accelerator immediately, it would make a whoosh sound again and just idle normally.

Note that it is not a squeak as those usually originate from the timing/serpentine belt. It seems to be coming from the intake plenum. Mileage is 100k , oil changed recently, timing belt changed an year ago, new gasket as well. I have to take this thing on a long trip in 3 days so for peace of mind I need some advice.

Thanks in advance!

Check the air filter, filter housing and hoses, clips connecting the housing to the intake manifold.

Check the breather pipe, vacuum pipe connecting to the brake servo (technically you should feel decrease in brake assist if anything wrong)

These are the issues i could think of

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