Good morning, First post, read many but can seem to find answer I need....Car-
Range Rover P38 4.6 V8
Brought with gas already fitted and was running perfect for 3 months after purchase.Symptoms-
As soon as the car engine temp raises off of the blue ie gets warm, starts to pop and bang in the exhaust when accelerating. Runs perfect for the first few minutes when cold. Runs perfect on petrol ruling out electrical problem. Change over from petrol to gas is same as always been and never played up or been a problem.The gas system-
Zavoli system, Reducer has S 05.05, 002227 stamped on the top.
Zavoli matrix XJ544 injectors.Whats been done so far-
As I knew nothing whatsoever about LPG I took to local LPG "specialist" who in turn put it on his laptop and done some updates and said everything was showing up as working as should be...
Took it home and it was no different at all, still popping and banging and missing... After some reading on here I decided I would try taking the injectors apart and clean them up... They were very dirty and sticky so gave a good clean with WD40 and a cloth.. back together no change
Vapour filters were then replaced and took back to LPG garage yesterday... Hooked back up to Laptop and still he couldn't see any problem. On collection of the car he told me he had changed the firmware and replaced the "mapping"? and to give it a try... which I did last night and its still miss firing when warm/hot!!
To my limited engine brain it sounds and feels like it is under fueling?? What next?-
I was going to try a repair/service kit for the reducer?
Do the markings from the top of the reducer (S 05.05, 002227) tell me the model as I have seen so many for different BHP engines?
Many thanks for all advice and help