Hello from Biggleswade, Beds - backfiring problems!

Hi All,
A quick hello and also looking for good sound advice which seems to come naturally from this site.
I live near Biggleswade in Bedfordshire and am having rough running problems with my P38 Range Rover on both petrol and lpg. Backfires a little - sometimes. Runs so smooth other times. I have had new HT leads fitted and a Bosch original MAF which have worked to a degree but the problem exists. I have seen other similar threads about backfiring but I am convinced mine is an easy fix as it doesn't happen all the time as long as someone who knows these cars can look at it. I have tried two local garages who are not Landrover specialists, I still have the fault. I have tried Landrover specialists in Bedfordshire but the customer service (I chased three times - promised to be called back but the call never came) is dreadful. As such, I don't want to give them my money.
Does anyone out there live locally who can help or know of a good knowledgeable garage locally? Naturally, time is money so I am willing to pay someone to look at it, just want to find the right person!
Thanks,
Clive

Is the LPG single or multipoint?

I have a P38 with an early lpg system fitted that does much the same - when it is in need of a good service. This usually well before the regular service interval is up. Sometimes it blows assorted breather etc pipes off the engine which make it worse...

There is P38 & lpg specialist nr Buntingford that we use - don't know anyone nearer to Biggleswade, happy to pass on details if you want - PM me.

Hi

Have you tried Woodside garage in Maulden? I have not used them personally but quite a few of my friends have used them and always got good service.

ATB, Tom

Upgrade to multipoint and the backfiring will be no more, eventually the gas valve will go like mine did last week, pointless tryin to bodge it at that point