Peugeot Boxer fun...

[S2r]

I have a 2007 Peugeot Boxer 2.2, it's a motorhome so doesn't do many miles a year.

Last year, after driving for a couple of hours, it wouldn't start it just kept turning. AA recovered me to my local garage where it started the next day without a problem.

They changed the fuel filter, checked some other bits but couldn't find any codes.

I have done a number of small trips over the past year without incident, but then drove for an hour or so up the motorway and it would turn over but wouldn't start again so another call to the AA.

After leaving it over night on my drive, it starts.

Battery is around 12.5 to 13 volts, fuel is fresh, egr replaced in the last 12 months, regularly serviced, the mpg appears to have dropped recently but no obvious smoke.

Feels like a fueling issue, so injectors? Fuel pump relay?? Something else???

[E-bmw]

S2r said:

I have a 2007 Peugeot Boxer 2.2, it's a motorhome so doesn't do many miles a year.

Last year, after driving for a couple of hours, it wouldn't start it just kept turning. AA recovered me to my local garage where it started the next day without a problem.

They changed the fuel filter, checked some other bits but couldn't find any codes.

I have done a number of small trips over the past year without incident, but then drove for an hour or so up the motorway and it would turn over but wouldn't start again so another call to the AA.

After leaving it over night on my drive, it starts.

Battery is around 12.5 to 13 volts, fuel is fresh, egr replaced in the last 12 months, regularly serviced, the mpg appears to have dropped recently but no obvious smoke.

Feels like a fueling issue, so injectors? Fuel pump relay?? Something else???

Obviously, it could be many things and can only really be diagnosed when it isn't starting.

Best guess from what you say would be to check for fuel at the injectors as a starting point, live data from a code reader should give you fuel rail pressures when cranking.

[vw_99]

Fors transits with same engine had lots of problems with fuel metering valve (on pump). And pressure sensor on the rail. We would sell a pair a day at ford.

Maybe worth a look.

[E-bmw]

I didn't think that age had the transit engine?

ETA.
Were those transit engines also the ones that used to gum up the injectors?

[vw_99]

Might be wrong on that year. But i always thought 07-14 boxers had a 2.2 based on the ford 2.2 "puma" engine.

[paul_c123]

It does sound fuelling-related. There's not much else it could be, after all - the other things which would stop a diesel engine running, would tend to get worse and worse rather than being an intermittent issue. For example if it had lost compression, this wouldn't just be able to return.

Without diagnostic codes, its actually a blessing because it eliminates a number of things and a diagnostic code can lead you down the wrong path quite easily. I'd still be hooking it up, but looking at the actual fuel pressure vs requested pressure in live data.

[FiF]

Only vehicle I ever had with a sort of similar problem. It would start to have problems after being driven reasonably hard for a longer run. But let it stand for a bit and all was well. Tried all sorts to figure it out. Turned out to be the tank breather.

[bangerhoarder]

It looks like the Boxer had a period of using the ZSD/Puma engine instead of the DW12, then went back to them (thankfully).

The ZSD has a bit of a reputation for fuel pump and injector issues. It's likely an issue with the pump as suggested above.

[paul_c123]

Worth checking too before assuming its a fuelling issue - does it have an immobiliser? Mind you, I imagine it would log a code if a start was tried with the immobiliser blocking it.

[S2r]

Thanks for all the replies, I believe it is the ford engine.

I am a bit reluctant to take it for another run because knowing my luck I will stall it and not be able to start it again

I will see if I can get the injectors dropped out and inspected/ cleaned initially and see what state they are in. I presume clogged injectors would also mess up the mpg?

[cptsideways]

Sounds like vacuum in the fuel system, try pulling the fuel cap after running a while.

[S2r]

And back from the garage with a new crank sensor.

Apparently the old one was covered in all sorts of stuff and they are susceptible to heat.

Going to take it for a decent run over the weekend and see what happens