Tdci Starting Issue

[Nath779]

Hi,

Ive got a 05 plate 2L tdci 115 with 80k miles.
A few weeks
ago my altinator went, before that the car started fine. Since I had a
new one fitted when the car is cold it will start up at about 7000 revs
and the car has no revs untill it kicks in propperly which takes
anything up to 5 minutes. When it kicks in it ticks over without any
problems and drives fine with no loss of power or anything, it will
drive all day. As soon as I turn the engine off it wont start again till
the engine is cold.
I Have had the car in 2 garages the last one
being ford and had loads of new parts put on and the latest ECU updates
and nothing makes a difference so ford gave me it back saying they dont
know what is wrong with it. I had the injectors replaced in jan.
Does anyone have any ideas what it could be?

Thanks in advance

Nathan

[mixmasterlooney]

Sounds to me like a temperature sensor gone bad. It could explain the high romantic as a result of over fueling, that extra fuel would be needed for a cold start it could also flood the engine when warm

[Nath779]

Hi mate, thanks for the reply. The temp sensor was replaced not long ago along with the cam sensor, it's a strange one, got us confused.

[BOF]

A few weeks

ago my altinator went, before that the car started fine. Since I had a

new one fitted when the car is cold it will start up at about 7000 revs

You must mean something else, but what? 700 rpm?

...and the car has no revs...

I'm trying to imagine what you mean. The only thing that I can think of is that the car will run at some vaguely sensible idle speed, but has no response to the accelerator pedal. Is that what is happening?

So, just to check, since you have had the alternator replaced, does the car crank at a normal speed, or does it sound laboured and slow? Does the electrical equipment work normally (for example, are the lights of normal brightness, or are the lights dim and yellowish and only go back to normal intensity once the engine has started behaving normally?).

When you say

As soon as I turn the engine off it wont start again till the engine is cold.

what exactly happens? Does the engine turn over at a normal speed, but it doesn't fire? Does it turn over slowly? Does it turn over at a normal speed, but it only occasionally fire and doesn't catch?

I had the injectors replaced in jan

Who did that? Was it

1. Ford
2. An independent diesel specialist
3. Someone else?

[Nath779]

Hi,

On first starting it will tick over at normal speed, start straight up but at a low idle speed, the engine sounds rough, battery light and management lights stay on and accelerator has no responce. All electricals work fine, all light have full brightness, no yellow or anything. It's averaging about 30 seconds now till the idle reaches normal speed.

When the car idles normally everything works fine, car runs spot on, I drove it 70 miles to test it and had no problems.

When the engine is warm and I turn it off and try starting again it turns over at normal speed, starts to fire up but struggles half way though then fails and I have to start again. I have tryed it hot and cold just once to see if it works with easy start and it fires up fully instantly both times with it. I haven't tried that since as I dont want to have to rely on that, don't know if that working makes a difference as I'm not that good with engines.

The injectors was replaced by Hogg Deisel LTD in sheffield that state are a Delphi service centre.

Ford put a crank sensor on last week and I had a temp sensor on a couple of months ago.

[BOF]

The injectors was replaced by Hogg Deisel LTD in sheffield that state are a Delphi service centre.

OK, so they are a Diesel specialist, which is a good thing. I was wondering whether whoever had done it might have ignored something obvious, like re-coding the injectors, but a Diesel specialist should get that right.

When the engine is warm and I turn it off and try starting again it turns over at normal speed, starts to fire up but struggles half way though then fails and I have to start again. I have tryed it hot and cold just once to see if it works with easy start and it fires up fully instantly both times with it. I haven't tried that since as I dont want to have to rely on that, don't know if that working makes a difference as I'm not that good with engines.

Well, I'm suspecting fuel supply, and your result with the Easy Start makes me suspect that even more. It sounds as if it has difficulty getting the fuel to start, although, once it is running, it does get fuel.

It could be the fuel pump itself, or it could be the fuel filter being partially blocked, of even something as simple as air bubbles in the fuel line (an inefficient connection allowing air in). Actually, it could even be something as simple as a foreign object in the fuel tank, or water/crud in the fuel tank, although then you might expect the symptoms to change as you filled up with fresh fuel and again as you ran the fuel down towards empty.

Really, you probably want to take it to somebody who can read the various data, in particular the fuel rail pressure. Additionally, what fuel does it get and when was the last time the filter was changed (and were there any metal fragments in the old filter)?

Ford put a crank sensor on last week and I had a temp sensor on a couple of months ago.

The crank sensor didn't change anything at all?

In spite of it being in some way temperature-related, it didn't sound like a temperature sensor fault.

[Nath779]

Hi,

Bit late with a reply as I ran out of money to spend on the thing lol

Ford told me they tested the fuel pump and that was fine. I have changed the fuel filter now, there was nothing in it. I did notice the fuel coming from the tank was pure black, must be a lot of crap in the tank. I have never used any set fuel, just go to first place I pass when need fuel and use what ever they got.

Going to have a word with the machanic's that have worked on the car so far on monday, just thinking what has been changed on it and can't remember the fuel rail pressure sensor coming up, if it hasn't I will get it changed next week as I don't know anywhere local that can test them without driving it back to ford but that wasnt really local.

And no the crank sensor didn't do anything.

[mixmasterlooney]

Oh boy I hope the previous owner wasn't putting cooking oil in the tank

[Nath779]

Why would anyone put that in?

[BOF]

...because it is cheaper than fuel bought from a petrol station (including tax, of course)?

[mixmasterlooney]

Cooking oil will leave a thick gooy residue in the tank that clogs up the entire fuel system and cause injector and fuel tank/pump and filter issues, you may need to remove your gas tank and blast out the goo