What noise?
Is it a diesel knocking? Like noisy "pinking" clattering noise?
This happens when you deck the pedal suddenly and when working under load.
If this is it, BACK OFF the timing of the injection pump a couple of degrees until it stops.
You may need to do this 2 or 3 times.
The clattering is not good for the engine. Knocks hell out of pistons, rods, big ends, etc.
CharlesY
Is it a diesel knocking? Like noisy "pinking" clattering noise?
This happens when you deck the pedal suddenly and when working under load.
If this is it, BACK OFF the timing of the injection pump a couple of degrees until it stops.
You may need to do this 2 or 3 times.
The clattering is not good for the engine. Knocks hell out of pistons, rods, big ends, etc.
CharlesY
Definitely NOT!
Any sharp harsh clattery noise, or clinking, chinking or squealing, is BAD NEWS.
On tickover a 200tdi or 300tdi or any other Landy diesel really should run quite smoothly, with NO nasty noises at all.
Next is to "blip" the throttle. This should hoick the revs up smartly but should NOT induce nasty noises as above.
At any running speed, there should not be nasty noises.
After a while you'll get to know what's an ordinary "who cares a toss" noise, and what's a "Bloody Hell ... Switch OFF quick" sort of noise.
With any luck you'll learn to tell the difference before your engine disintegrates. It's cheaper if you do.
Buy a special stethoscope with a rod probe. Great tool for working out noises in engines.
CharlesY
battenberg
Well-Known Member
you could also use a big long handled screwdriver, put your ear on the end... not quite as effective but worth a go.
RAZ8550TDI
New Member
funny this should come up because i get a knock when i am not under load, top end on mine seems quiet but was thinkng maybe the shells could do with replacing but that knock would get bigger underload if it was it usually happens when on light throttle but when i gun it all goes quet and all i can hear it the turbo whistle away nicley. is all i have mentioned a good or bad thing???
Beware knocking noises that tend to go away under load.
Big end shells getting worn tend to behave that way, whereas main bearings tend more to make a deeper rumbling noise all the time.
Sometimes it's better to shove in a set of big end shells rather than wait for the shaft to get hammered till it needs a re-grind.
Big End shells are quite easy to replace.
CharlesY
Big end shells getting worn tend to behave that way, whereas main bearings tend more to make a deeper rumbling noise all the time.
Sometimes it's better to shove in a set of big end shells rather than wait for the shaft to get hammered till it needs a re-grind.
Big End shells are quite easy to replace.
CharlesY
RAZ8550TDI
New Member
speaking of the 300tdi i have been offered one that came in part ex v8i on gas with certificate FLRSH m reg on 108k and its got me thinking but i love the reliablility of my deisel hmmmmmmmmm.
gonna have a look at it tomoz as i can pick it up for 2k so ill see how she feels when i take it out.
gonna have a look at it tomoz as i can pick it up for 2k so ill see how she feels when i take it out.
its the cat tryin to get out
If the engine goes fine, and if the "knocking noise" happens in the same circumstances most times, probably you can just ignore it.
No-one can diagnose a noise accurately without hearing it, but the way you are telling it, the engine goes fine.
With any luck it will be something inocuous like a little piston slap, which usually happens at slowish speeds, and taking your foot off the GO pedal.
These engines have a reputation for being reliable, but as someone pointed out, they also have a reputation for being a bit noisy.
CharlesY
No-one can diagnose a noise accurately without hearing it, but the way you are telling it, the engine goes fine.
With any luck it will be something inocuous like a little piston slap, which usually happens at slowish speeds, and taking your foot off the GO pedal.
These engines have a reputation for being reliable, but as someone pointed out, they also have a reputation for being a bit noisy.
CharlesY
