bassett
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| posted on 3/6/16 at 12:14 PM |
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Diff sounds like a fuel pump?
Hi All, first few drives of my r1 engined mnr this year were all going well until I noticed the diff sounds like a fuel pump whirring at low speeds.
Any ideas on what this could be and any ways to diagnose the fault, or is this a certain sign of a rebuild and I should stop driving it?
Thanks in advance
Adam
My MNR Blog Updated Jan 2010 - Track Day Prep Begins!
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CosKev3
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| posted on 3/6/16 at 01:49 PM |
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Check the oil level is the easiest thing to do first! 
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rusty nuts
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| posted on 3/6/16 at 05:33 PM |
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My diff has had a very slight hiss since I built the car, it's got no worse in 10 years
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David Jenkins
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| posted on 3/6/16 at 08:40 PM |
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The first time I drove my car without ear protection I thought my diff was about to pack up! In the original Escort the diff was separated from the
driver by the body shell, plus all the carpet, seating and sound-proofing, but without all that in the way I was hearing the gears whirring in all
their glory.
It's been like that for 10 years - I've got used to it... 
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Hodor
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| posted on 4/6/16 at 09:32 AM |
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Funny how relevant posts pop up.
I had my daughter out for a run the other day and killed the ignition whilst free wheeling down a slope so i could talk to her. Thought my fuel pump
was still running behind me. Checked I'd switched off and realised it was the diff. Wondered if it was a problem but figured it's always
been like that, i just thought it was the pump.
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bassett
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| posted on 4/6/16 at 10:16 AM |
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Thanks for the thoughts all. I'm only concerned as it was never there before. It's definitely a whirring slight hissing kind of sound.
Will try an oil top up first and see where I get to.
My MNR Blog Updated Jan 2010 - Track Day Prep Begins!
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turbodisplay
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| posted on 4/6/16 at 11:34 AM |
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When I solidly mounted my celica rear diff it whinned really bad. Before the worn rubber mount made no noise.
So rubber mounting the diff will stop the noise to an extent.
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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