P38 diesel not starting

Chrispndry · Dec 17, 2023

P38 diesel hse started fine until cold weather 3 weeks ago. Went to start and flattened battery. Put jump leads on tuned over nearly started but then got a high pitched whirring sound from engine.
Tried again next day no joy, suspected in tank pump...replaced unit...fuel to injection pu.p but no fuel at injectors.....HELP...
THANKS

Datatek · Dec 17, 2023

Chrispndry said:
P38 diesel hse started fine until cold weather 3 weeks ago. Went to start and flattened battery. Put jump leads on tuned over nearly started but then got a high pitched whirring sound from engine.
Tried again next day no joy, suspected in tank pump...replaced unit...fuel to injection pu.p but no fuel at injectors.....HELP...
THANKS

Flat battery could mean loss of sync between the BECM and the EDC, it will need diagnostics.
The original problem was probably duff glow plugs, they will start with up to 2 duff plugs in warm weather but, depending on which cylinders, not in cold weather.

Chrispndry · Dec 17, 2023

Ok thanks it's going to be a garage job

Flossie · Dec 17, 2023

Your user name suggests you have a skin condition or are running veg as a fuel? Are you running veg?

Chrispndry · Dec 17, 2023

Flossie said:
Your user name suggests you have a skin condition or are running veg as a fuel? Are you running veg?

Yes veg oil

Datatek · Dec 17, 2023

Chrispndry said:
Yes veg oil

Veg oil waxes in cold weather as does diesel but diesel has anti waxing additives added in winter that you most likely don't have in your veg oil, so the FIP may be well bunged up.

Flossie · Dec 17, 2023

Take the fuel filter off, jug underneath and crank it to see if fuel is coming through, if it is clear clean oil then change the filter. Fill the new filter with diesel before fitting it. You really need a sample jar of your veg ,that's in the tank, outside on a wall or something where you can easily see it.
Or twin tank it.

Chrispndry · Dec 17, 2023

Datatek said:
Veg oil waxes in cold weather as does diesel but diesel has anti waxing additives added in winter that you most likely don't have in your veg oil, so the FIP may be well bunged up.

So you reckon fip off and replaced...fuel is getting to pump but not injectors

Chrispndry · Dec 17, 2023

Flossie said:
Take the fuel filter off, jug underneath and crank it to see if fuel is coming through, if it is clear clean oil then change the filter. Fill the new filter with diesel before fitting it. You really need a sample jar of your veg ,that's in the tank, outside on a wall or something where you can easily see it.
Or twin tank it.

Fuel is getting to fip just not to I injectors new filter was fired and primed even tried neat diesel into feed pipe to pump...

Datatek · Dec 17, 2023

It's

Chrispndry said:
Fuel is getting to fip just not to I injectors new filter was fired and primed even tried neat diesel into feed pipe to pump...

It's still likely to be loss of sync.

Chrispndry · Dec 17, 2023

How is the resolved

Datatek · Dec 17, 2023

Chrispndry said:
How is the resolved

With Nanocom, read the code from the EDC and write it back to the BECM.

Mark Piercy · Dec 17, 2023

Chrispndry said:
So you reckon fip off and replaced...fuel is getting to pump but not injectors

Don't jump for the fip before you investigate the rest of the system

@Datatek said BUNGED not buggered!!!

Rubberknees · Dec 17, 2023

Mark Piercy said:
Don't jump for the fip before you investigate the rest of the system @Datatek said BUNGED not buggered!!!

Now I know you're on vegi I used to run my 300tdi on vegi and one cold snap it went thick in the injector pipes. With 2 hot hair dryers blowing over the pipes and pump for about 30 mins it got everything flowing again and engine started. Make sure all your glow plugs are working. Beru or NGK are good plugs to use. Best of luck

Mark Piercy · Dec 17, 2023

@Mukiwa ran his bus on a veg and additive mix.

Rubberknees · Dec 18, 2023

Mark Piercy said:
@Mukiwa ran his bus on a veg and additive mix.

I used an additive but in really cold weather had to mix 50/50 with diesel as used to thicken up

Mark Piercy · Dec 18, 2023

Rubberknees said:
I used an additive but in really cold weather had to mix 50/50 with diesel as used to thicken up

It makes sense lad

Rubberknees · Dec 18, 2023

Mark Piercy said:
It makes sense lad

Cheers dad

RangeRoller dt · Dec 18, 2023

Rangieman123 · Dec 18, 2023

Is your Range Rover converted to run on veg oil or it is a stock engine?

P38 diesel not starting

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