Moderator: Luke
So how the dickens does anyone bleed it? I was thinking once the pump got fuel it could build hydraulic pressure and then pump through any air further along the high pressure side?paul2012 wrote:Connect 1.8 TDCI are awkward to prime fuel system.
Priming bulb should be fitted between diesel filter & main fuel line from fuel tank.
Should never attempt to bleed are from injector unions. Due to duel system is common rail & higher very high pressure
P0190 Fuel Rail Pressure Sensor "A" Circuit
If there's a problem with fuel pump and/or injectors. Following DTC's are stored
P0251 Injection Pump Fuel Metering Control
P1211 Injector Control Pressure Higher/Lower Than Desired (engine running)
Resulting in either non start. Engine going into limp mode with glow plug light flashing on instrument cluster or engine cutting out when accelerating
connect-driver wrote:So how the dickens does anyone bleed it? I was thinking once the pump got fuel it could build hydraulic pressure and then pump through any air further along the high pressure side?
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Thanks for replies, this is exactly what I've done (primer bulb from filter to pump). I've primed it until bulb is hard, cranked it over and over whilst pumping fuel through and whilst running it on easy start.paul2012 wrote:connect-driver wrote:So how the dickens does anyone bleed it? I was thinking once the pump got fuel it could build hydraulic pressure and then pump through any air further along the high pressure side?
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By fitting a priming bulb between diesel filter & main fuel line from tank.
Pump it until priming bulb goes hard. Then crank engine over & it should start.
Do not loosen any injector pipes or unions as this will result in low fuel rail pressure. Therefore engine will not start
connect-driver wrote:Thanks for replies, this is exactly what I've done (primer bulb from filter to pump). I've primed it until bulb is hard, cranked it over and over whilst pumping fuel through and whilst running it on easy start.paul2012 wrote:connect-driver wrote:So how the dickens does anyone bleed it? I was thinking once the pump got fuel it could build hydraulic pressure and then pump through any air further along the high pressure side?
Sent from my E6653 using Tapatalk
By fitting a priming bulb between diesel filter & main fuel line from tank.
Pump it until priming bulb goes hard. Then crank engine over & it should start.
Do not loosen any injector pipes or unions as this will result in low fuel rail pressure. Therefore engine will not start
I'm at a loss as to why it refuses to start
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You've fitted priming bulb in wrong place. It's pointless fitting it between filter & pump due to air in diesel filter.
Priming bulb should be fitted between diesel filter & main fuel line from from fuel tank
Yes I'm positive all air is out of filter. I undid the pump fuel intake banjo and bled out any air like you would on a brake caliper.Chuggy wrote:Have you got fuel coming from the fuel filter outlet to the pump when pumping the primer?
Untill all air is removed from the filter and you get a good fuel flow out of the filter outlet it will just turn over forever.
connect-driver wrote:What I can't understand is I've undone the injector unions on #1 and 2, cranked over engine for good 20 seconds whilst pumping bulb and nothings come out.
Normally the primer bulb will fill a litre bottle with 10 squirts so there's more than enough gone through... And its going somewhere
-but is there some valve between pump and injectors that is not opening?
Is the triangular thing a distributor of some kind?
Thanks again for replies
paul2012 wrote:connect-driver wrote:What I can't understand is I've undone the injector unions on #1 and 2, cranked over engine for good 20 seconds whilst pumping bulb and nothings come out.
Normally the primer bulb will fill a litre bottle with 10 squirts so there's more than enough gone through... And its going somewhere
-but is there some valve between pump and injectors that is not opening?
Is the triangular thing a distributor of some kind?
Thanks again for replies
As said before. Don't loosen off any unions at injectors or fuel rail (looks like a spider with all 4 injector pipes attached to it.)
There is no valve between pump & injectors. Although there is a fuel pressure sensor on fuel rail.
Looking at your photo you now have priming bulb connected up correctly.
Get DTC's read again clear them. Then attempt to restart engine. Again read DTC's & post them here.
paul2012 wrote:...Looking at your photo you now have priming bulb connected up correctly.
Get DTC's read again clear them. Then attempt to restart engine. Again read DTC's & post them here.
knobby1 wrote:With the TDCi engines, I was under the impression if you undo any of the high pressure fuel lines the pressure sensor "senses" a low pressure and won't allow the pump to activate..?? Is that correct or am I talking rubbish again..??
Lord Knobrot
paul2012 wrote:Your correct engine shuts off. Does the same with worn injectors with excessive leak off
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