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What's that noise

Tech Talk for Nissan owners.

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Posts: 9
Joined: Sun Apr 03, 2005 7:11 am

What's that noise

Post by Maxxis »

I have a petrol GQ and when sitting on very steep hills the motor makes a dull nocking noise. It doesn't seem to do any harm, and there is plenty of oil pressure. Does anyone know what this noise is?
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Post by Area54 »

Sounds like a passenger side engine mount has torn. The engine remains captive through the design of the mount, but the knocking you can hear is the captive tongue in the holder moving with torque - on hills as you noticed.
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Post by Maxxis »

That's not it. I have replaced both mounts. It is an engine noise.
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Post by Area54 »

When you had the mounts out, did you notice any rubbing on the tongues of the captive holders? On steep hills the motor and gearbox assembly will move back and forward, considering that the only things holding them to the vehicle are the rubber mounts, they may be rubbing in the captive holders. Motor and gearbox assembly are a hefty item.

What model GQ (year), do you have the 4 bolt or 2 bolt engine mount?
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Post by bazzle »

Engine oil slapping at front of sump on big end. Common on petrol ones.

bazzle
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Post by Maxxis »

Engine oil slapping in the sump is what i originally suspected.
Thanks for your help guys.

Maxxis
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