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Old 02-23-2003, 15:10   #1 (permalink)
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AU Unusual Engine Sound

I've got a AU1 Forte Sedan. Its done 105600kms. I recently bought it, and i've noticed a unusual sound coming from the engine. Its hard to explain. When the engine idles, it clicks (not quite a clicking sound, but more of a slipping sound) every half a second (matching the rpm speed of the motor). When i accelerate, the sound becomes faster. You can't hear it when its doing 1500rpm+.

It doesn't always do it. I just had it serviced at Ford, but it didnt make that noise then. It did make it before the service though.

Any ideas?
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Old 02-23-2003, 15:55   #2 (permalink)
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Could just be an injector pulsing. Get a long screwdriver and put the end of it on an injector and your ear on the handle and you will find out if some are "clickier" than others.
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Old 02-23-2003, 18:04   #3 (permalink)
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So if it is, how can it be fixed?
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Old 02-23-2003, 18:18   #4 (permalink)
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It could also be a loose exhaust manifold - I have what would appear to be a similar problem on my AU V8 and I've got it booked in for new manifold gaskets. Without actually hearing the noise, it's hard to diagnose so it could be a list of things.
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Old 02-23-2003, 19:42   #5 (permalink)
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Hey Dave, this is what was happening to mine, and of course when I took it for service, the sound didn't happen! Do you have LPG? They moved something to do with the LPG in the engine bay but the sound still happens, but it seems to be louder on hot days and in the mornings. And only if I have the window open and try hard to listen, very weird. They claim nothing is wrong so I don't know what to think, still sounds like the belts to me.
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Old 02-23-2003, 23:00   #6 (permalink)
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This sounds very similar to what happens on my EF. It's a manual and only 'clicks' when accelarating.

Of course, no one can hear it when I take it in to have it looked at.

When I first got the car I had an NRMA inspection on it. The guy said that it could be a loose nut on the flywheel, if so, why would it only happen when I press the loud pedal?

My car has now been like this for 2.5 years and nothing has let go, yet... (touch wood)

The click is not too loud, just load enogh for me to hear it all the time. It sounds like it comes from the passenger side of the engine bay.
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Old 02-24-2003, 03:16   #7 (permalink)
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hi
if you hear a clicking sound coming from under or around the nsf gaurd thats your purge control vavle working this is normall operation but it should stop operating at about 1800 -2000 rpm
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Old 02-24-2003, 03:51   #8 (permalink)
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Turn your stereo up so u don't hear it! Fixed many a drama on my old car LOL
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Old 02-24-2003, 04:08   #9 (permalink)
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i'm not sure what the valvetrain is like on ford motors but what about lifters? i'm sure i've heard of some EF's with noisy lifters.
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Old 02-24-2003, 05:44   #10 (permalink)
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The AU series have a very loud injector sound when on idle you can hear it I believe. Its the injectors.
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