Sudden Poor Running Two

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Naughty-Monkey

Naughty-Monkey

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Guernsey
Hi All. I posted this on a different thread but didnt get any replies. Someone suggested putting it here. Hoping someone can give me a clue where to start. Thanks.

Hi Everyone,
Can anyone suggest where i should start to try and suss this out?
Defender 300tdi has been running great for ages. Regularly serviced including a month or so ago.
Suddenly this morning was difficult to start. When it did start, runs as if missing. Pressing the throttle and it will increase reves ok and turbo comes on. But, then splutters back to poor again. Pressing the throttle now and nothing much happens. Leave it to run rough for a few moments and i can rev it up again with the throttle.
fuel issue?
injector?
I read on this forum it could be the head gasket, so I checked for gas coming out around cylinder 4 as instructed. I dont think its that. Couldnt see any obvious defects.
I shall crack off the injectors one at a time, but other than that im not sure where to start.
Thanks
James
 
Naughty-Monkey said:
Hi All. I posted this on a different thread but didnt get any replies. Someone suggested putting it here. Hoping someone can give me a clue where to start. Thanks.

Hi Everyone,
Can anyone suggest where i should start to try and suss this out?
Defender 300tdi has been running great for ages. Regularly serviced including a month or so ago.
Suddenly this morning was difficult to start. When it did start, runs as if missing. Pressing the throttle and it will increase reves ok and turbo comes on. But, then splutters back to poor again. Pressing the throttle now and nothing much happens. Leave it to run rough for a few moments and i can rev it up again with the throttle.
fuel issue?
injector?
I read on this forum it could be the head gasket, so I checked for gas coming out around cylinder 4 as instructed. I dont think its that. Couldnt see any obvious defects.
I shall crack off the injectors one at a time, but other than that im not sure where to start.
Thanks
James
Click to expand...

Check the fuel lines for air ingress, a small piece of clear plastic tube works well. Also check the leak back pipes.
 
Open the bleed screw on the fuel filter and pump the lift pump using the priming lever, see if lift pump is working and you are getting fuel to the filter, if not lift pump may be knackered, you might have to turn engine a little to get the priming lever off the cam to move it manually.
The video shows this from 3 minutes in
 
Last edited:
Most likely fuel related, but do not discount a dodgy stop solenoid electrical connector.
 
Hi All,
Thanks for all the tips. I removed the lift pump and it seemed ok. Then I had a "oh surely not" moment.
I'd run out of fuel. doh!
I will say in my defence, that
1, the fuel gauge is broken and i go by the milage. I must have pressed the reset trip button by mistake, and
2, it broke down at home, so it must have run out exactly as i pulled into my drive. Hence i didn't consider it.
Oh well, at least it was an easy fix!
I do feel a bit of a buffoon though!
Thanks all.
James
 
I ran out of fuel in a truck once, stopped the engine, next morning wouldn't start, then had to bleed the system to get going again. Obviously running only on what was on the lines!
 
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