fuel cut-out

gog · Feb 4, 2011

whilst driving along ,slowed for a roundabout,the p38 diesel cut out ,
fuel guage showing just above quarter,then remembered being told from previous owner ,beware of letting it go below this.
Anyway opening cap to put a gallon in there was quite a pressure release when i did open the cap,could this be the problem,blocked breather perhaps,started ok after.

wammers · Feb 4, 2011

gog said:
whilst driving along ,slowed for a roundabout,the p38 diesel cut out ,
fuel guage showing just above quarter,then remembered being told from previous owner ,beware of letting it go below this.
Anyway opening cap to put a gallon in there was quite a pressure release when i did open the cap,could this be the problem,blocked breather perhaps,started ok after.

Was it a pressure release or a sucking in of air. It is likely the later and you are getting a vacuum in the tank causing fuel starvation. Breather will be blocked.

Datatek · Feb 4, 2011

Either what Wammers says, or it's the in tank pump.

gog · Feb 4, 2011

to be honest not sure if was in or out ,breather has to be the first port of call 1st ,
I assume this will solve the cutting out issue when getting low on fuel .

rewmer · Feb 4, 2011

Crack in the pump lets it suck in air instead of fuel when the levels low.

mick the builder · Feb 4, 2011

gog said:
whilst driving along ,slowed for a roundabout,the p38 diesel cut out ,
fuel guage showing just above quarter,then remembered being told from previous owner ,beware of letting it go below this.
Anyway opening cap to put a gallon in there was quite a pressure release when i did open the cap,could this be the problem,blocked breather perhaps,started ok after.

Only fill mine when the light comes on and mine sucks air aswell when the caps opened. Think your problem lie's elsewhere.

dogsbody · Feb 4, 2011

I can't say that I've ever noticed any pressure changes when I open the fuel cap but . .

I've got a 2.5 auto and now and then, when I'm going downhill and take my foot off, my engine cuts out. It's nothing to do with fuel level and I've fitted a new in-tank pump.

I'm suspecting an engine sensor but as it only happens very rarely and I've now got the hang of re-starting it and it's still a bit chilly out there I haven't investigated further.

TAKdriver · Feb 5, 2011

dogsbody said:
I can't say that I've ever noticed any pressure changes when I open the fuel cap but . .

I've got a 2.5 auto and now and then, when I'm going downhill and take my foot off, my engine cuts out. It's nothing to do with fuel level and I've fitted a new in-tank pump.

I'm suspecting an engine sensor but as it only happens very rarely and I've now got the hang of re-starting it and it's still a bit chilly out there I haven't investigated further.

Me too : if you find out what it is let us all know.

rewmer · Feb 5, 2011

Main fuse box, engine bay.

wammers · Feb 5, 2011

mick the builder said:
Only fill mine when the light comes on and mine sucks air aswell when the caps opened. Think your problem lie's elsewhere.

Your breather is blocked. There should be no vacuum in the tank.

dogsbody · Feb 5, 2011

rewmer said:
Main fuse box, engine bay.

New fuse box fitted, not even because of this fault, just as a precaution.

fuel cut-out

gog

Active Member

wammers

No longer with us, RIP

Datatek

Well-Known Member

gog

Active Member

rewmer

Well-Known Member

mick the builder

Well-Known Member

dogsbody

Very senior member

TAKdriver

Active Member

rewmer

Well-Known Member

wammers

No longer with us, RIP

dogsbody

Very senior member

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