Sudden misfire on 300tdi

Andre155 · Nov 27, 2020

Hello my fellow landy people

I was hoping someone here could shine some light on my sudden misfire
I recently did the cambelt with the timing marks and tools and all and i realized that the previous owner that did the cambelt retarded the pump by about 4 teeth so i went and put it on its marks where its supposed to be
After the cambelt i checked my valve clearance and made that what its supposed to be as it was running a litte ruff
I cleand out the intercooler thoroughly and all
After all that i have driven about 90km and all fine and yesterday as i was dropping people of it suddenly started misfiring it will idel fine then suddenly a misfire then will be fine for 3 to 4 turns then missfires again when its hot

When the engine is cold it only misfires when it has gained a little bit of temp and i bring the rpm's up to about 1500

I have checked other posts but everything thay have tried i did before assembling everything if i missed a post im sorry i don't want to be one of those people you know

Thanks in advance

Dragonwalker · Nov 27, 2020

How was it running before you changed the belt ? Maybe it was set like that because it ran better ? Need to find out why if that is so.

Andre155 · Nov 27, 2020

Dragonwalker said:
How was it running before you changed the belt ? Maybe it was set like that because it ran better ? Need to find out why if that is so.

It was sluggish and had no power and did not want to reve after i setted it on its marks it pulls like a train now and much more responsive and reves much smoother and cleaner

Dragonwalker · Nov 27, 2020

Andre155 said:
It was sluggish and had no power and did not want to reve after i setted it on its marks it pulls like a train now and much more responsive and reves much smoother and cleaner

I'm sure someone more knowledgeable will be along soon.

Andre155 · Nov 27, 2020

Dragonwalker said:
I'm sure someone more knowledgeable will be along soon.

Thanks for your help so far

Is it possible that after setting the valve clearance gaps to standert it went out a bit in the wrong direction

Stanleysteamer · Nov 27, 2020

Did you change the tensioner at the same time?
If it is intermittent, it could be a fuelling problem, sh!t getting into an injector or summat. If it is heat dependent I doubt it is anything to do with the timing belt, unless the tensioner is playing up, even then....
Check lubrication to the cam and valve stems, just in case. Did you change the fuel filter? Could there be air in the fuel system?
Best of luck.

Andre155 · Nov 27, 2020

Stanleysteamer said:
Did you change the tensioner at the same time?
If it is intermittent, it could be a fuelling problem, sh!t getting into an injector or summat. If it is heat dependent I doubt it is anything to do with the timing belt, unless the tensioner is playing up, even then....
Check lubrication to the cam and valve stems, just in case. Did you change the fuel filter? Could there be air in the fuel system?
Best of luck.

I got the kit so had everything in that i neede to do the belt

The fuel filter was changed when i got the car last year this time

I literally was driving and stopped by a robot an it started misfiring in such a way the car would give a huge shudder en then fine again as if its not getting any fuel

Will check all the other places you mentioned thx

Blackburn · Nov 28, 2020

I would start by changing the fuel filter they are cheap and quick to do , normaly blocked filter reduces power.
What are the leak of tubes like on the injectors if they are failing they can let air into the fuel system.

Andre155 · Nov 28, 2020

Blackburn said:
I would start by changing the fuel filter they are cheap and quick to do , normaly blocked filter reduces power.
What are the leak of tubes like on the injectors if they are failing they can let air into the fuel system.

Leak of tubes are brand new did them 4 months ago

Will check the filter only thin is it has not lost any power or anything it just misfires

Andre155 · Oct 3, 2021

Update on this
It turned put to be my injectors 3 new tips and 1 new one and she is pulling like a train now with no crakel nor a misfire
Thx for everyone's help

Sudden misfire on 300tdi

Andre155

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Dragonwalker

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Andre155

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Dragonwalker

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Andre155

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Stanleysteamer

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Andre155

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Blackburn

Well-Known Member

Andre155

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Andre155

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