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Prosport



Member Since: 21 Feb 2016
Location: Suffolk
Posts: 1

United Kingdom 2009 Freelander 2 TD4 XS Manual Indus Silver
Diesel engine 'pinking'

Having just had to re-time my classic petrol car then having to retard the ignition slightly due to the engine pinking or pinging (where you get pre ignition of the combustion). I have noticed a similar pinking sound when my 2.2 diesels is under load when pulling the caravan! What's the reasons for this?

Post #352266 26th Jun 2018 8:24 pm
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

The type of engine... Very Happy

Post #352267 26th Jun 2018 8:47 pm
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Yorky Bob



Member Since: 28 Apr 2015
Location: Yorkshire
Posts: 4561

United Kingdom 2013 Freelander 2 TD4 GS Manual Firenze Red
Re: Diesel engine 'pinking'

Prosport wrote:
I have noticed a similar pinking sound when my 2.2 diesels is under load when pulling the caravan! What's the reasons for this?


Towing a caravan. Rolling Eyes Rolling with laughter

Use better diesel when towing and see it that sorts out your issue. Also don't use too high a gear thus making the engine labour on low revs. FL2 MY10 TD4 GS traded in at 2 years
FL2 MY13 TD4 GS Current

Post #352270 26th Jun 2018 9:38 pm
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Mowog



Member Since: 11 Apr 2018
Location: Cheshire
Posts: 426

Re: Diesel engine 'pinking'

Prosport wrote:
Having just had to re-time my classic petrol car then having to retard the ignition slightly due to the engine pinking or pinging (where you get pre ignition of the combustion). I have noticed a similar pinking sound when my 2.2 diesels is under load when pulling the caravan! What's the reasons for this?


On my classic car I just adjust it on the steering column

Post #352273 26th Jun 2018 10:40 pm
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dorsetfreelander



Member Since: 20 Jul 2013
Location: Dorset
Posts: 4336

United Kingdom 2014 Freelander 2 SD4 XS Auto Loire Blue

That reminds me, I still have my home made Xenon timing light in the cupboard somewhere and a piece of chalk to mark the crank pulley. Those were the days! Anyone still got feeler gauges? 3 x FL1 2 manual + 1 auto
5 x FL2 4 manual + 1 auto
Now Discovery Sport P250 MHEV SE

Post #352289 27th Jun 2018 8:53 am
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I Like Chips



Member Since: 25 Jun 2017
Location: Ascott Under Wychwood
Posts: 1417

United Kingdom 2011 Freelander 2 SD4 HSE Auto Indus Silver

Still have one of these around somewhere


http://www.gunson.co.uk/product/G4094

Post #352292 27th Jun 2018 9:13 am
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I Like Chips



Member Since: 25 Jun 2017
Location: Ascott Under Wychwood
Posts: 1417

United Kingdom 2011 Freelander 2 SD4 HSE Auto Indus Silver

Mr DSFL

Timing light ...luxury

I used to do the timing by ear......... back in the day when I could hear


Last edited by I Like Chips on 27th Jun 2018 6:36 pm. Edited 1 time in total

Post #352293 27th Jun 2018 9:15 am
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alex_pescaru



Member Since: 12 Mar 2009
Location: RO
Posts: 4640

All in all, indeed, nice times!
But getting back on the OP question...
As there is no spark and spark timing here, the only thing that can generate the pinking, is a combination, like the guys said, between the injection timing and quality of diesel fuel.
You can't control the first, but you can try to control the later.
And don't forget the fact that it's a diesel engine and it works, by default, on a detonation manner.

Post #352294 27th Jun 2018 9:27 am
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