2.1 td sucking in air
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2.1 td sucking in air
as per title you can see bubbles coming up in the transparent pipe any places where leaks regulary occur?
Re: 2.1 td sucking in air
As per many replies I've seen on this topic, it's usually the injection pump starting to let air in through some seals. Is it affecting the way the engine behaves? Are there many bubbles or just the odd one? I see the odd one on mine, but it doesn't affect mine at all.
406 estate, 2.1TD, I fixed her, then part exchanged her for a Mercedes E300TD Avantgarde Estate.
Hmmmm, straight 6 goodness!
Hmmmm, straight 6 goodness!
- steve_earwig
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Re: 2.1 td sucking in air
Dittopoddack wrote:I see the odd one on mine, but it doesn't affect mine at all.

Unskilled meddling sin©e 2007
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Re: 2.1 td sucking in air
yeah it doesnt run!! lol it starts then revs up thens dies straight away?
Re: 2.1 td sucking in air
any ideas just cant get it started and it knocks when you spin it over like fuel starvation but theres black smoke coming out the exhaust?
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Re: 2.1 td sucking in air
I've no idea but that sounds more serious than a fuel line leak 

Unskilled meddling sin©e 2007
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Re: 2.1 td sucking in air
yeah weve established its something more than a fuel leak its fires then dies immediately any ideas bit stuck now?
Re: 2.1 td sucking in air
despearat for any ideas?
- Welly
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Re: 2.1 td sucking in air
Timing's out?
Cambelt slipped?
Cambelt slipped?
Cars in my care:
2021 Kia Spottage 1.6 Pez Turbo Dual Clutch Gearbox Trickery
2013 Renner Twingo - donkey work
2021 Kia Spottage 1.6 Pez Turbo Dual Clutch Gearbox Trickery
2013 Renner Twingo - donkey work
Re: 2.1 td sucking in air
Have you got fuel up to the filter?
Are the bubbles in the fuel line to the injection pump?
Did it suddenly refuse to start, or did something happen or has any item been replaced recently like the fuel filter?
Sounds to me like the fuel filter, or a fuel pipe is leaking air in.Check there are no leaks around the hand pump.
Are the bubbles in the fuel line to the injection pump?
Did it suddenly refuse to start, or did something happen or has any item been replaced recently like the fuel filter?
Sounds to me like the fuel filter, or a fuel pipe is leaking air in.Check there are no leaks around the hand pump.
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Re: 2.1 td sucking in air
Black smoke doesn't really sound like a shortage of fuel...
Unskilled meddling sin©e 2007
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Re: 2.1 td sucking in air
The black smoke is the strange thing, that usually suggests overfuelling, but the car won't start now.
My normal system is to make sure the basics are right, eg, fuel to the injectors, air filter not blocked etc.
It's a while since I worked on a 2.1TD, does it have an air mass/air flow meter, if so, that may explain the black smoke, or fuel could be injecting into a couple of cylinders which hasn't burnt.
Timing is also a possibility, as already mentioned, but it's such a big job to check that, you don't want to be looking at that until all other possibilities have been eliminated.
My normal system is to make sure the basics are right, eg, fuel to the injectors, air filter not blocked etc.
It's a while since I worked on a 2.1TD, does it have an air mass/air flow meter, if so, that may explain the black smoke, or fuel could be injecting into a couple of cylinders which hasn't burnt.
Timing is also a possibility, as already mentioned, but it's such a big job to check that, you don't want to be looking at that until all other possibilities have been eliminated.
Re: 2.1 td sucking in air
its getting fuel to the pump as there is a small bleed valve on the inlet pipe on the pump,the car has had problems in the past with its previous owner who had a pump fitted then found out it was the fuel pump relay is that the box thats housed with the ecu?? apart from that nothings been touched since and it came on suddenly so dont really know where to look next it had a cambelt 10-15k ago so id be surprised if that has slipped,i never heard of that happening on the xud1905 engine and isnt the 2.1 just a bored out version of that?
Re: 2.1 td sucking in air
i give up!!! went to a scrappys tried ecu,throttle sensor,pump relay and checked the timing on the cambelt which was fine and its still no better.
Re: 2.1 td sucking in air
Check if you have fuel at the injectors, undo the pipes to each injector (slacken the nuts off, not remove), then try to start the engine and see if fuel comes out the pipes.
Check if the engine starts with easy-start, that may give a clue.
I assume you have checked the glow plugs?
Check if the engine starts with easy-start, that may give a clue.
I assume you have checked the glow plugs?