Ongoing starting problem

300 disco 1
Starts on the button in morning when cold, half a turn and she bursts into life, ticks over lovely, plenty of power, had new lift pump, fuel filter and sediment bypass.

As the engine warms up it gets more and more difficult to start until when at operating temperature she will not fire up at all, not even kick.

Leave her say one hour and she will fire after a while on the starter

Leave her till the temp gauge is on zero and she will fire up straight away

No ECU, the pump is entirely mechanical

Replaced pump with an earlier model so no alarm electricery on back of pump

I did use one of the three wires as a live feed for the stop valve though.

Cant understand it unless the alarm wire is doing something, I will try a hot wire on it tomorrow

Does the starter click or the engine crank when hot?

My 300tdi struggled to start for the 1st time yesterday.

warrior said:

Does the starter click or the engine crank when hot?

My 300tdi struggled to start for the 1st time yesterday.

Click to expand...

No prob spinning over ok but not firing at all, the only way to start it when hot is to get it running with easy start and then it will run ok once started.


Any way I decided to swap the injectors this morning for some old ones out of a scrap 300.
Guess what ?? she fired up first time and now starts as soon as you turn the key every time hot or cold.

The injectors I took out were covered in crud at the tips probably from running bio, I'll clean them up when I have time and see if they work ok.

But for now JOBS A GOOD 'UN

Least you sorted it mate, mine struggles for the 1st time the other day but I've had one of them fuel cleaner things in so I'm blaming that, once this tanks gone ill put a fresh filter on.

warrior said:

Least you sorted it mate, mine struggles for the 1st time the other day but I've had one of them fuel cleaner things in so I'm blaming that, once this tanks gone ill put a fresh filter on.

Click to expand...

Well worth fitting leak off pipes and new lift pump as well as filter, should be sorted then, I doubt if its the fuel

It's never struggled befor, it starts better then my 59 reg transit, put out a puff of white smoke on start up after this fuel stuff has bin out in, will be trying it again tomorrow now me and my mate have done the clutch.

landowner said:

No prob spinning over ok but not firing at all, the only way to start it when hot is to get it running with easy start and then it will run ok once started.



The injectors I took out were covered in crud at the tips probably from running bio,

But for now JOBS A GOOD 'UN

Click to expand...

The Devil's fuel in my opinion ! The only vehicle I have ever had an injection pump fail on was the one I ran for a year or so on bio. Cost me as much as I saved in endless filter and pipe changes, too ! Dreadful stuff.

Mike.

onthecut said:

The Devil's fuel in my opinion ! The only vehicle I have ever had an injection pump fail on was the one I ran for a year or so on bio. Cost me as much as I saved in endless filter and pipe changes, too ! Dreadful stuff.

Mike.

Click to expand...

What vehicle was it? The 300 tdi's are supposed to be fine with bio diesel.

It was a Citroen 2.5 fitted Bosch mechanical pump. The implication in Citroenland was providing you had the Bosch rather than Lucas pump you could run it on nutty slack, if you wanted to. I just had an endless round of weeping pipes, choked filters, smelly exhaust culminating in pump failure. Deeply unimpressed, particularly as I have run a couple of their engines happily up to 300k (and still goinfg well) on standard fuel

Mike.

I've had a couple of citroens and was very impressed with them. I think Citroen say its ok to run on b30, but I'm sure that's just an arse covering excercises because there are plenty of people running them on b100. I'm not sure I'd like to run the common rail hdi engine in bio, although many do, because there voodoo in those fuel systems. Expensive voodoo!

onthecut said:

The Devil's fuel in my opinion ! The only vehicle I have ever had an injection pump fail on was the one I ran for a year or so on bio. Cost me as much as I saved in endless filter and pipe changes, too ! Dreadful stuff.

Mike.

Click to expand...

Must have been **** bio-my 300 tdi is on its 5th year on bio only,have also run a tankful through my mondeo tdci which was fine and does 50+ to the gallon now(45 ish before).Going back on bio when weather warms up.
I have had to renew the seal on the drive end of the injection pump,but filter changes are just annual (when I remember),and at 15p ish per litre the cost savings are huge.
I am very fussy over the quality of my homebrew,and guess this pays off.

biolandy said:

Must have been **** bio-my 300 tdi is on its 5th year on bio only,have also run a tankful through my mondeo tdci which was fine and does 50+ to the gallon now(45 ish before).Going back on bio when weather warms up.
I have had to renew the seal on the drive end of the injection pump,but filter changes are just annual (when I remember),and at 15p ish per litre the cost savings are huge.
I am very fussy over the quality of my homebrew,and guess this pays off.

Click to expand...

Yes, I'm a bio newbie but I learnt very quickly to take my time making it and to leave it for a few days before putting it in the tank, just in case something 'funny' happens to it as it settles.