OK, looks like a bit of pumping is required! Thanks Bel Don't overdo it. John's right - a bit of testing at different pressures is the best way to decide. With 15s, you shouldn't need to go too high all round, if my experience is any guide. When we first got our Bongo, with 215/70/R15* Japanese Dun...

Thanks, both.

Cheers, David

amazing thread and so pleased you found the problem was in the end a simple one. Could help some one with the same problems Thanks, I was more than a bit relieved! I also hope it might help somebody else, although I can't pretend to have been purely altruistic in my postings - i.e., no sainthood ye...

Where about is the extra ECU fitted ? ................ No, it's not in the engine bay,............ The ECU end of the LPG loom comes through the big grommet, top of the engine's forward bulkhead, together with pre-existing Mazda loom(s), up under the auto transmission shift linkage, and into the mu...

Where about is the extra ECU fitted ? I had sort of assumed that it might be inside the Cab piggy backed on the original ECU, but from the sound of it its in the engine compartment ? Connectors in that environment need to be very rugged! No, it's not in the engine bay, although 90% of the loom is o...

> > The new-product Vredestein Quatrac Lites for Mrs M's Nissan Note (with full M&S/Alpine spec and markings) have now arrived at our local tyre dealer, so for your other cars, they're now starting to become available here. Unless the weather goes very pear shaped beforehand, we're not going to...

.........in my eureka moment last night, I realised that the LPG ECU intercepts and then regenerates twin injector pulses during LPG operation, sending a full operating pulse to the LPG injectors and a separate diminished (duration?) pulse to the petrol injectors to prevent them operating but someh...

Ron, sorry if I have missed something as I just speed read most of the posts. Going back to first principals, why are they certain of the cylinder that is the problem? As replacing the injector didn't cure the problem could the connector be causing the misfire or could it be another cylinder with a...

Ron, sorry if I have missed something as I just speed read most of the posts. Going back to first principals, why are they certain of the cylinder that is the problem? As replacing the injector didn't cure the problem could the connector be causing the misfire or could it be another cylinder with a...

This sounds most complicated David and comes on the heading of absolutely rotten luck. It sounds awfully like the problems I had with a LPG converted Range Rover that suffered a ecu failure after four years running on LPG. That was back in 2004, converted in 2000 when LPG kit was a lot more primiti...

I don't understand (I've had a glass or two!). My first thought as that the ECU is retuning to suit the LPG and when you switch back to petrol it needs to recalibrate but that would affect all cylinders. Its a pity you don't have a scan tool to see what the ECU thinks is going on. The compression i...

Maybe we should start a Bongo Forum Poll to who as what make of LPG system fitted ... and what issues (if any) have they had ..!! BiGas - installed in October 2008, by SVS, Wimborne, for Imperial Motors, as part of our camper-conversion deal. I have noticed (on the Tinley Tech website) this week, t...

haydn callow wrote:Have you tried turning off the flash lube ??

No. How would that affect a persistent misfire on just one cylinder, with good compression, injector, plug, HT lead, dizzy cap and rotor arm - and on petrol only?

haydn callow wrote:Is the misfiring plug 'sooty' ?? (if so "sweep" it)

No, it isn't.

It does indeed sound a perfectly acceptable explanation ! Accept for one thing the garage have obviously never actually found the real problem on all the junked engines - so really they have no idea what so ever as to the cause - its very easy to come up with what sounds like a perfectly feasible e...

Relevant maintenance/repair/trouble-shooting history, this year: Very poor starting in freeze up (and particularly, the damp-everywhere thaw), February-ish. I changed dizzy cap, rotor arm and plugs - problem solved. LPG consumption up a bit all year but no action taken until last weekend - I then ch...