Db9 throttle noise

Author
Discussion

V12durk

Original Poster:

7 posts

107 months

Saturday 25th April 2015
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Hi This is my first post here and couldn't find one on this subject before I posted. I own a db9 on an 05 plate and recently after having the engine rebuilt I have started hearing an unusual noise. It seems to happen in auto when changing gears with the revs still on or when you punch the throttle it's very loud but it's a strange noise like a 'whoop' similar to the sound of a pigeon. If anyone could point me in the direction of what this could be it would be great thankyou

Sump

5,484 posts

166 months

Saturday 25th April 2015
quotequote all
Air leak?

Who rebuilt and how long ago?

V12durk

Original Poster:

7 posts

107 months

Saturday 25th April 2015
quotequote all
A company called classic and modern engine in London carried out the rebuild and our own mechanics at work fitted it and put everything back together. It has been six months since it was Back on the road and has covered about 2000 miles.

Sump

5,484 posts

166 months

Saturday 25th April 2015
quotequote all
Can I ask how much they charged for the rebuild? You can email me if you wish.

Have your mechanics heard the whoosh?

Jon39

12,782 posts

142 months

Saturday 25th April 2015
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Hearing strange engine or transmission noises, is certainly not what we want with expensive cars.

Hope you don't mind me asking, but who did your engine rebuild, and what happened to require a rebuild.

We used to have a contributor here (maverick), who whenever he heard an unusual engine noise with his DB9, would take the engine to pieces. We admired his extreme confidence to even attempt such work. When everything was in pieces though, he would post photographs and ask questions. That usually led to some 'banter', which perhaps upset him, because he is absent now. After one rebuild, he immediately drove to the Arctic and back, so he could build engines. Think the original ticking noise was still present though unfortunately.

There are some mechanical experts here, so perhaps they will answer your question.
Good luck. Hope it is not a major problem.


V12durk

Original Poster:

7 posts

107 months

Saturday 25th April 2015
quotequote all
I will be bringing it into our mechanics on Tuesday to hear the noise for themselves as I haven't had time recently and it's the day Im taking it to have the back box removed and replaced with straight pipes which should sound awesome. The reason for the rebuild is for something we seems quite common with the db9 after looking into it which is oil starvation to the rear two cylinders causing an absolute mess. This is because aston Martin initially sold the cars with an incorrect dipstick which they did a recall on years later for cars that went into them but as mine wasn't dealer services it never had the dipstick replaced so when it was near low on the dipstick it was ln fact very low

8Tech

2,136 posts

197 months

Sunday 26th April 2015
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The noise you describe sounds like an induction leak, possibly from the ducts leading to the air filter boxes or damaged boxes themselves. This will be especially likely if the sound is louder at high throttle settings at a low engine speed.