gems 4.6..
sequential log kit, diy install..YES done loads before..(all worked perfect)
running batch fire..megasquirt engine ecu, map 2 controlling gas fueling via zavoli gas ecu..(gas ecu does feck all other than switch injectors, as megasquirt is doing the mapping..run the same on other 2 door rrc , its perfect)
it aint firing on number 4.(o/s bank number 2)
it is FINE on petrol..
so..i have swaped gas injector leads..stays same
i have swaped gas injector from good one..stays the same
so it aint the lpg injectors or lpg wiring..
besides i have unplugged injector pipe from manifold and you can feel,smell,hear the gas exiting the injector..
this leaves spark...but it is running boost..and has NO problems on petrol, which if spark was an issue i would have thought at 10psi it would show up! also spark on number 4 is excellent!ie hold plug over 1/4 inch from engine and it arcs across!!
it has brand new plugs..
unlikley to be a coil pack as would also miss on oposite plug (2 plugs 1 coil wasted spark setup)
so lead??but seems unlikey due to such a decent spark..
i will be swaping leads tomoz (not an easy job due to coil packs hidden behind supercharger)..but i do not think there will be a change, really i dont..
anyone can think of anything else it could be..remember its fine on boost on petrol..plugs are all the same colour on petrol,but on gas missing one is black in comparison.
gas injector nozzles are installed as close to valves as possible.gas nozzle of no 4 is clear and open (put pipe on it and blew down it..its clear..)
thoughts please..thanks..quite urgent as at 8-10mpg on petrol and since sally (the other one ) destroyed its gearbox no.7 (maybe clutch if i am lucky) on way to work this morning i need to use !
sequential log kit, diy install..YES done loads before..(all worked perfect)
running batch fire..megasquirt engine ecu, map 2 controlling gas fueling via zavoli gas ecu..(gas ecu does feck all other than switch injectors, as megasquirt is doing the mapping..run the same on other 2 door rrc , its perfect)
it aint firing on number 4.(o/s bank number 2)
it is FINE on petrol..
so..i have swaped gas injector leads..stays same
i have swaped gas injector from good one..stays the same
so it aint the lpg injectors or lpg wiring..
besides i have unplugged injector pipe from manifold and you can feel,smell,hear the gas exiting the injector..
this leaves spark...but it is running boost..and has NO problems on petrol, which if spark was an issue i would have thought at 10psi it would show up! also spark on number 4 is excellent!ie hold plug over 1/4 inch from engine and it arcs across!!
it has brand new plugs..
unlikley to be a coil pack as would also miss on oposite plug (2 plugs 1 coil wasted spark setup)
so lead??but seems unlikey due to such a decent spark..
i will be swaping leads tomoz (not an easy job due to coil packs hidden behind supercharger)..but i do not think there will be a change, really i dont..
anyone can think of anything else it could be..remember its fine on boost on petrol..plugs are all the same colour on petrol,but on gas missing one is black in comparison.
gas injector nozzles are installed as close to valves as possible.gas nozzle of no 4 is clear and open (put pipe on it and blew down it..its clear..)
thoughts please..thanks..quite urgent as at 8-10mpg on petrol and since sally (the other one ) destroyed its gearbox no.7 (maybe clutch if i am lucky) on way to work this morning i need to use !
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