engine will not fire on petrol

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qwerty100

New Member
Joined
Dec 19, 2015
Messages
1
Car
vito 113
Hi All
New to forum . I have a 2002 vito 113 on petrol/lpg and I can not get the van to fire on petrol, I can force to start on LPG but van runs rough until up to temp and as soon as I switch to petrol it will cut out or at best run very rough.
So far I have changed,
O2 Sensor
fuel filter
air filter
MAF sensor

So at a bit of a cross roads thought it was throttle position sensor but revs ok on LPG but will not go past 4k revs and coughs and splutters . My next thought is fuel pump but that means taking out the tank to change pump. any ideas would be much appreciated.
Kevin
 

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