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Author Topic: knocking noise ?  (Read 892 times)

scottm72

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knocking noise ?
« on: November 08, 2012, 01:06:21 am »
started the car up today and straight away got a knocking noise just as it was starting ? only on starting so turned it off and tried again, there it was again,,, 3rd time nothing ?
sounded exactly like when your exhaust has slipped a rubber mounting,,, same noise and only there when starting the car.
my driveway is very sloped and dunno if that makes a diff ?
drove 20 miles later with no probs and got it on the ramps at garage and went underneath with the guy and absolutely everything is solid with no sign of any problems,,,, weird
sounded exactly like a vibration on starting the exhaust was causing some metal somewhere to bang onto another piece of metal but as I said it went after 2 starts ?
very strange indeed,,, car drives as good as ever and covered 50 miles today with no problems, also was serviced 5 weeks ago, mot'd 3 weeks ago with no advisories, and lastly pre warranty checked 2 weeks ago with the comment that it was just like a new car,,, so I have no idea what this could have been.
I do park it in first gear on driveway but use the handbrake to hold the car before putting it in gear and put it back into neutral before starting up,,,, done that for years on every car with no probs as my silly driveway is very sloped.
any help on this would be appreciated
thanks

scottm72

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Re: knocking noise ?
« Reply #1 on: November 09, 2012, 12:32:08 am »
bump up  :happy2:

Offline scopes

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Re: knocking noise ?
« Reply #2 on: November 09, 2012, 12:41:05 am »
Maybe the oil is sitting more to the front of the engine, and is struggling to get pulled up round the engine for a short min or less...

Try leaving it on a flat service over a night & see if it still happens...  :happy2:

Only a suggestion dude...

Maybe put a pic up of how it parked...
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Offline Horatio

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Re: knocking noise ?
« Reply #3 on: November 09, 2012, 06:08:43 am »
Can you post a video? Use www.photobucket.com to upload the vid. Its damn annoying when things like this crop up!
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Offline exodus_ste

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Re: knocking noise ?
« Reply #4 on: November 09, 2012, 04:16:39 pm »
I had the exact same thing but even when parked on the flat! Only hapenned from cold start. I couldnt tell you exactly what was causing the noise because looking underneath everything looked spot on. I fitted a powerflex lower mount insert and it cured it immediately. Guess it just stops the engine rocking so much on start up!  :happy2:

scottm72

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Re: knocking noise ?
« Reply #5 on: November 09, 2012, 09:48:34 pm »
picture added


parked there every day, either way round, hasn't done it since so a mystery, even checking the exhaust on ramps and shaking it a lot didn't cause any banging

scottm72

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Re: knocking noise ?
« Reply #6 on: November 09, 2012, 09:51:43 pm »
man why are my pictures now so small lol, bloody windows 8, trying to figure it out is like eating soup with a fork