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Strange Droning Sound From Engine

dtrants
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dtrants Contributor

dtrants

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Hi all,

So im continuing to do general maintenance on my 1997 R33 gtst. (changed MAF, cleaned AAC, service etc) nothing crazy.

I have noticed that there is a strange droning sound that occurs as soon as i rev past 3000rpm. it is sudden, makes the sound and then disappears as soon as i back off the accelerator and get it back under 3000rpm. Doesn't happen when cruising at 3000rpm, only when accelerating past it. i can't really explain the sound, it is low pitched droning, sounds like its coming from the drivers side in the engine bay.

Have researched this a lot online but when i check the videos of the things i have read it could be the sound doesn't match what i hear.

Any help you guys could provide would be awesome, dont like hearing my car sounding sick!

Thanks everyone

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dtrants Contributor

dtrants

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Not an exhaust vibrating on the chassis or a rubber missing?

Thanks for the reply!

What sort of rubber do you mean? If i had to explain it better i would say the duration of the sound is similar to a BOV it is short and sudden and then disappears. I have been told that one of my engine mounts was worn, but from memory this sound started soon after installing new spark plugs, could either of those two things be responsible?

dtrants Contributor

dtrants

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To anyone reading this, i have done some more research online and found that a lot of people have videos with a similar sound under 'misfire' and most are caused by spark plug related issues. Seeing as this started happening soon after i changed mine i think that might be the problem.

Can any recommend spark plugs for a lightly modified r33 gtst. I think i may be running the wrong ones. Thanks!

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