Technical Fiorino 1.3 trouble starting

[aspar]

1.3D multijet, 10 plate


Turns over for ages in the morning before starting....maybe fifteen minutes!!!


Starts generally ok after that.


Big of 'lag' when you press accelerator - pretty much all the time.


Glow plugs - ok


In tank Fuel pump - pumps out when disconnected from filter


Filter - clear


Tested the readings on MAF sensor, the Fuel Rail Pressure Sensor and the fuel rail pressure control valve.


Fuel rail pressure control valve - all within the spec [as per RAC video on youtube]


MAF sensor as follows
Ignition On only - Green and Yellow reading 21mv [RAC video says should be 3-4mv]. Others oK
Engine idling - Green and Yellow now reads 12.1mv [cf 10mv from RAC video] others ok


Fuel Rail Pressure Sensor readings
Ignition on only - all readings fine [0.2mv, .5v, and 5v]
Engine on and Idle - Blue and Purple reads 2.4mv [cf 9.4mv as per RAC], others are fine.


Thoughts please.....I'm leaning towards the high pressure fuel pump being duff...but don't want to shell out £300 to replace it if it's not wrong....


Can I hire a high pressure test kit from anywhwre national??

 

[aspar]

meant to say...no sign of fuel leaking at the hp fuel pump.


We had though of changing the seals but no leak seems to negate that??

 

[aspar]

just an update...


yesterday it started being difficult to start even when hot [eg ten mins after turning off it struggled to start]


Then this morning it's not starting at all.....

 

[chris3234]

Does it start it better if you turn ignition on let pump prime turn off and repeat a few times to build up maximum pressure?

 

[aspar]

Not tried that. Will try tonight when I get home.

 

[Mad one]

I had to have the main high pressure diesel pump replaced with genuine fiat one, ( tried 2 X reconditioned ) the only problem was cost as it was, and still is £1000+ just for the pump. Also 2 X injectors, this cured it, starts on the button, almost before I release the key.

 

[K333fer]

I had to have the main high pressure diesel pump replaced with genuine fiat one, ( tried 2 X reconditioned ) the only problem was cost as it was, and still is £1000+ just for the pump. Also 2 X injectors, this cured it, starts on the button, almost before I release the key.

That does sound like a little bit of parts darts was played there

 

[Mad one]

Not too bad, the injectors were defiantly knackered, this cured some hesitation, however it became pretty obvious that the pump was not doing its job, problem then being, that the 2 reconditioned ones from 2 separate motor factors kept throwing up fault codes ( I was there on both occasions)

After changing for a brand new fiat supplied pump ( hence the cost ) it started first time, every time as it should.

Used garage for years, trust the guys there as they welcome any questions I have and always keep me updated as to what I need and check before going ahead with any further work.

 

[K333fer]

Not too bad, the injectors were defiantly knackered, this cured some hesitation, however it became pretty obvious that the pump was not doing its job, problem then being, that the 2 reconditioned ones from 2 separate motor factors kept throwing up fault codes ( I was there on both occasions)

After changing for a brand new fiat supplied pump ( hence the cost ) it started first time, every time as it should.

Used garage for years, trust the guys there as they welcome any questions I have and always keep me updated as to what I need and check before going ahead with any further work.

That was probably due to the incorrect pressure controller fitted to them , I have a leak on mine at the moment we looked it up at my local factors as my mate is the manager there ,
Even cross referencing from the genuine part no across to Bosch brings up a different part no to the one that’s fitted to mine

 

[aspar]

That was probably due to the incorrect pressure controller fitted to them , I have a leak on mine at the moment we looked it up at my local factors as my mate is the manager there ,
Even cross referencing from the genuine part no across to Bosch brings up a different part no to the one that’s fitted to mine

So is the best thing to swop over the pressure controller from the old pump to be sure???


Or buy a pump with the controller already fitted.....

 

[Mad one]

Problem is that if you cannot match the fiat number to a Bosch part you are in the same boat as I was.
Having to buy a fiat original from fiat is a very expensive route to take, however I had no choice in the matter if I wanted it fixed.

 

[K333fer]

After much searching and cross referencing I now how a fiat number Aswell as a Bosch no looks like my pump shouldn’t be on my car but more likely a Ducato it’s been on there since new now

 

[aspar]

Care to share them???

 

[aspar]

Bloody thing started first time this morning!!!

 

[aspar]

Sorry that was yesterday [ie started first thing].....


This morning....spins away merrily without any signs of starting!!!

 

[aspar]

Update: started it just now with EasyStart spray...

 

[K333fer]

Care to share them???

The no that comes up on fiats part system is
71754571 Bosch no 0928400680
But have found this is incompatible with my pump
The no I have found is 71772309 Bosch no 0928400680
If you take the no off the plate on the pump and talk to a Bosch diesel centre they can tell you the exact no regulator your pump needs
I tried to order a Bosch one direct and they are on back order fiat wanted £155+vat and said it should be available next day , my Bosch guy who I know very well also gave me the Vauxhall no , tried our dealer we use at work nope sorry on back order phoned the place local to me that I know very well yes it’s on back order but I can see there are some in Europe I will order you one of them will take about 4 days and 122 + vat it’s been a fair few days of headache and phone calls !

 

[aspar]

thnx...

 

[Dmjings]

Update: started it just now with EasyStart spray...

Did you ever get to the bottom of this ? Having the same issue with my Doblo .

 

[varesecrazy]

Did you ever get to the bottom of this ? Having the same issue with my Doblo .

Have you seen the rail pressures?