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[gav mv6]

2000 mv6 preface lift , sold to a 'mate' few months later was told wont start parked on my drive u want it back ? , well i had to ,didnt i ? mv6 , full leather, irmscher / prodrive kit , lpg ,seems unwilling to fire up at all tester seems to point to crank sensor , now as i obtained this car as a none runner i would prefer to obtain a second hand sensor just to see if she runs , and then if ok will go see my local vaux  dealer for all the required bits ,other wise if no runs may break or sell complete  ,please is there anyone out there who has a sensor i can buy thats a good un to see if shes going to play ball ?

thanks

gavin

[The Red Baron]

have you checked for codes?.

[gav mv6]

just powered it up and got code 31 , no rpm signal

[JamesV6CDX]

31 is normal with engine off

They can fail without a code though

[gav mv6]

engine wont fire at all just turns over 

[tigers_gonads]

Crack off the 19mm fuel pipe where it connects to the fuel rail and crank it over to see if your getting fuel upto the injectors 
Just for a few seconds though 

[gav mv6]

ok will give it a go , and let u know thanks

[gav mv6]

right update ! opened fuel pipes , nothing on ignition . managed to start it on lpg ! runs !!!! warmed up to temperature switched back to petrol ..... cuts out , there is power to the fuel pump connector on the top tank but bugger wont run , so think i need a fuel pump , are they all the same or do i need find one from a preface lift 3.0 ?or just a 3.0 ?

thanks

[zirk]

Should be the same across the range.

Common problem on LPG, where someone assumes they can run on LPG with hardly any petrol in the tank, but in reality the Petrol Pump is priming all the time ready for when the LPG runs out, low or no petrol in the tank burns the pump out, which wouldn't happen on a Petrol Only Car as the pump wont run without the engine running.

[gav mv6]

thats what we thought , also when we put a battery on it fuel gauge didnt move , had to put a can of petrol in it !

is this one ok ? http://www.ebay.co.uk/itm/331086030464?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649

[05omegav6]

If it's an estate with low fuel, you'll need three cans to get the bastid to fire

[gav mv6]

lol no its a saloon 

[05omegav6]

lol no its a saloon 

10 litres should do it then, as the tank is a different shape

[gav mv6]

Should be the same across the range.

Common problem on LPG, where someone assumes they can run on LPG with hardly any petrol in the tank, but in reality the Petrol Pump is priming all the time ready for when the LPG runs out, low or no petrol in the tank burns the pump out, which wouldn't happen on a Petrol Only Car as the pump wont run without the engine running.

thats why im shocked lad i sold it to has had lpg cars before and used to convert a few as well , guess he just thought car was not worth anything?? , even on my 24v lpg'd  sierra i always make sure there is a at least quarter tank petrol as never want a run out syndrome ,some people eh ?!

[zirk]

Should be the same across the range.

Common problem on LPG, where someone assumes they can run on LPG with hardly any petrol in the tank, but in reality the Petrol Pump is priming all the time ready for when the LPG runs out, low or no petrol in the tank burns the pump out, which wouldn't happen on a Petrol Only Car as the pump wont run without the engine running.

thats why im shocked lad i sold it to has had lpg cars before and used to convert a few as well , guess he just thought car was not worth anything?? , even on my 24v lpg'd  sierra i always make sure there is a at least quarter tank petrol as never want a run out syndrome ,some people eh ?!

Easy enough fix though if it is the pump, 20 min job max, just get a complete plastic pump insert from a breaker (any Omega Petrol model should do it) also get the Top Plate cover as well, in case the pipes your old one fall apart when taking it apart. 

Also worth changing the Filter if its been sucking up air and crap from the bottom of the tank.