Thread: Noise from motor under load

Considering you have just carried out exhaust work i would be willing to bet (if i had any $'s) that you have and exhaust leak.

They makes a nice rattly tappity tap tap sound in forced induction diesels.

Thanks Lucas, I had wondered that but was a bit dismissive as I didn't have that sort of noise when I did have an exhaust leak, just black soot building up under the bonnet but I guess with a grind and refitting a different leak could be the cause, tracking it down could be the problem.

If it's an exhaust leak, it can be found with a bit of plastic hose. Put one end up to your ear and run the other along and around the manifold joints.

Originally Posted by p38arover

If it's an exhaust leak, it can be found with a bit of plastic hose. Put one end up to your ear and run the other along and around the manifold joints.

ah... the bush mechanic's stethoscope eh, Ron

Yep! Don't forget the screwdriver up against the ear, too.

I also have a proper mechanic's stethoscope.

Originally Posted by Landy07

sounds like there is a little man with a hammer tapping away in the motor.

I would just take the hammer of the wee guy. Poor bugger probably just wants out

Reckon on exhaust leak too.

It may now be leaking elsewhere now that you have fixed the manifold to head leak, check around turbo and exhaust pipe flange, Regards Frank.

Originally Posted by p38arover

Yep! Don't forget the screwdriver up against the ear, too.

I also have a proper mechanic's stethoscope.

Now that does conjure up an image.....

......do you also have a white coat, with scapula and thermometer in top pocket ?

....Dr Ron