I spoke to them today (on different subject), got the impression they deal with Prins diesel blend systems now, Prins petrol systems dealt with in Huddersfield.markob wrote:I think I may take it to the Prins guys in Southampton
You needn't splash out on an all new system...
Maybe battery connection cleared codes, maybe you made a better power connection for the LPG system when reconnecting, maybe just coincidence.markob wrote:the battery on the car started to play up a few weeks back and so I replaced it, afterwards out of curiosity I thought I would try the LPG again and it worked !
Maybe disconnecting the battery cleared fault codes and allowed the system to work, not sure but I managed to get through 4 tanks with no problems.
Maybe it's set to changeover at too cold a temp like Gilbert said, and Mercs do shut cylinders off on misfire detection. From memory, Lovato has a min setting for changeover temp of 20c and this weather your engine will have been running a while for reducer to reach 20c? if reducer plumbing was an issue would expect to see problems after running on gas a while, not during switch-over. Other possibles would be long injector pipes, manifold nozzles in poor location, ECU settings issues such as fuel switch-over characteristics, incorrect temp correction, poor mapping, some injectors don't work well at cold temps. It is possible to mask most such issues by setting a higher changeover temp and/or setting changeover in deceleration at higher than tickover rpm, where if install was on par that shouldn't be necessary.markob wrote:This week the system is playing up again, only difference being the temperature. If I leave the system to automatically switch over it cuts out and drops one or more cylinders. If however I let the car get much warmer and switch it over manually it seems to run quite happily
Does this point conclusively to the reducer or plumbing not being right ?