Knocking Sound When Accelerating

[Nel]

Hello all,

On a long drive back from Penzance to Kent yesterday i noticed a knocking sound when i pull away in 1st from stand still (not going hard, just normal accleration). I started to hear it around clackett lane where they have shut two lanes off. The car had been going at a steady speed until then for a good 5 hours. Is it just that the engine was hot or is this the start of something expensive?

As soon as i'm away it stops. sounds like its coming from right behind the centre consol type area in the engine bay. The car had only just been serviced so im presuming that all oil levels etc were fine.

Could it be this?

http://www.aa1car.com/library/spark_knock.htm

Any advice greatly appriciated. I only ever seem to post when i have a problem, must be a better LOC member in future!!! :)

[Rob]

wont be that as the engine has knock sensors and will adjust the timing

[Nel]

One down then!

Cheers rob.

[Steve_D]

Is it a one off knock sound when your pulling away or does it happen several times like the low octane knocking/pinking sound?

[Nel]

Yeah it was happening several times but would then stop after i was up into 2nd and away.

I took the motor out today to football and didnt hear it once. It had been doing 80-90mph for a good 5 hours before it started doing it, maybe i should have given it a break halfway through.

[Steve_D]

Maybe the knock sensor is faulty?