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« on: 05 February 2018, 21:17:57 »
So picked up a little Corsa Van 1.2, the car derived van type, dont laugh its quiet a nippy little thing, its a LPG Dual Fuel badged, bought from a Company so high millage but tons of Vauxhall Service History, LPG wasn't working, hadn't been for a year or so.
Anyway, took a punt and Ive managed to get the LPG working again, it was an electrical problem, it runs sweet on LPG now under all driving conditions, but heres the issue it will run on LPG fpr about 2 miles and then switch back to petrol, run for a couple of more miles on petrol before switching back to LPG and so on and on.
Looking at some of the service history looks like its had a few attempted repairs on the LPG side in the past but not resolved, one of the comments made by Vauxhalls was, it was a LPG Pressure problem but they didn't resolve it?, armed with that info I then filled the LPG Tank up to see if that made any difference, it did, it made it worse, it was then still intermittent but needed to run a lot longer on petrol before switching back to LPG, say 20% LPG then the rest on petrol before switching back again.
let it run like that and noticed it improves as the Tank becomes emptier, to the degree it almost runs perfectly all the time on LPG when the Tank is almost empty before running out.
Any thoughts? Tank or Regulator pressure?, or maybe level sender is intermittently telling the system its out of LPG or something?
I do have another theory, that its nothing to do with pressure and the system is working as it should be and its possibly a temperature problem, in as much I guessing a full tank of LPG is a lot colder than a near empty one and its switching off LPG because the temperature is too low, ie the Vaporizer is getting too cold when running on a full tank of LPG?
So far all ive done is changed the Thermostat, no difference, the coolant seems to get up to temp as it should, be it a bit slow and the Vap does get warm, should it get really hot?, Heater gets hot, Ive also unplugged the Temp Sender on the Vap and that throws a fault and shuts the system down, so that kind of tells me thats working, looking at the pluming it looks like the Vap is plumed in parallel to the Heater matrix, so maybe next stage is to do a flush, but as said heater does get hot.
Any other ideas, or stuff I may have missed?. also thinking about re pluming the Vap in series before the heater, good or bad idea.
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, How sad is that. 
