I had my Talbot motor home LPG converted by a registered garage. I was told the BRC system was the best and at considerable expense authorised the conversion. For over two years the van has backfired violently and any adjustments by the garage are only short term solutions.

I recently spent a further £160 on setting up the van with plug leads I supplied and they fitted a new filter. On Friday my wife and myself were on a busy motorway and had to hastily lift off the accelerator, the resultant backfire was so violent it split the exhaust back box straight down the weld and then burnt the protective covering for the handbrake. It took the AA and £99 to complete our journey, using only petrol. Clearly, the conversion is not fit for purpose and I have no faith in the garage. What should I do next?