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Hi, new to this so here goes

I have a Laguna 2.0l Auto extreme 04 plate and on start up in the morning i have a constant knocking noise which seems to originate from the engine area. The knocking shudders the car and is felt quite distinctively in the drivers seat. Now, when in park the knocking and shuddering is quite bad, when put in drive it lessens but still there. If i shift the gear to the manual setting the knocking stops. The knocking and shudder seems to go together.
When driving away like this the knocking gets worse until the car warms up then it subsides to the point of completely going away and the car drives superbly.
Any help is much appreciated, thanks
 

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First thing I would look at is engine and gearbox mountings. Any slack here would show up under acceleration. Just a guess at this point but these fittings are designed to hold the engine and gearbox firmly. Unfortunately they suffer in the process. Just search this forum.
 
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