LPG Discussion Forum

When I had problems caused by my R90E getting clogged up with heavy ends when we had the dirty gas problem, I found that carb and brake cleaner wouldn't touch it. The only thing that worked reliably was thinners which dissolved the gloop. I soaked the diaphragms in it and it didn't seem to affect ...

This made me think as once converted an LPG or CNG fuelled car used to get £10 discount. So I've just looked it up and we are now lumped in with all the other petrol and diesel powered cars with the rate solely on the CO2 figure. They snuck that one in quietly....

Some of the French pumps are well worn and you need to keep hold of the hose to take the weight off the nozzle. Although I haven't had that problem for a while now, I think they are maintaining their pumps a bit better. Either that or you have bent the adapter so they don't seal properly. Where were ...

I bought a Saab that was already converted and it came with a safety certificate showing that the system been converted and tested, but the V5 still showed petrol. In those days the DVLA had local offices so I went into my local one with the V5 and certificate to get it updated. I was told there was ...

No I'm not an installer, you are confusing me with Simon (LPGC). I had a safety certificate for mine but they wouldn't accept that, they wanted to see an invoice for the parts for a DIY conversion. Not easy when it was already converted when I bought the car.....

I've never been asked to supply anything by insurers, only an invoice for the components or install for DVLA to change the fuel type on my V5. Even that was only needed to get a Classe 1 Crit Air sticker for the French low emission zones.

Why not fit the filler into the bumper where one of the towbar electrical sockets would go? That way you don't need to cut the bumper and you won't need the sockets if you are removing the towbar anyway. Although you might have fun finding the blanks for the holes in the bumper as originals are NLA ...

As it has carbs, I suspect it will be a single point system, probably without any lambda feedback. A leak from the vaporiser will cause it to run rich (so it stalls when dropping to idle) and almost certainly allow excess gas to pool in the manifold hence the difficulty in starting until it has ...

Anything ca be done if you put your mind to it, see here viewtopic.php?p=105436&hilit=medusa#p105436

It's a level of engine protection that LPG/CNG doesn't offer as it isn't needed because you are never going to get it to knock. One of my cars requires 98 RON Octane or higher fuel so if I put 95 RON in it if I need fuel but can't get the full fat stuff, the knock sensors retard the ignition to ...

Agree with Simon. Propane/LPG has an Octane rating of 114 while Methane/CNG is between 120 and 130, so no matter how much compression and how much ignition advance you run, you're unlikely to get it to knock. If you advance it too far it will just try to run in reverse before it knocks!

why would the Russians take-off the petrol, not the CNG? I'd think the CNG is already pretty close to what's required for LPG. Whereas it's be a greater leap to get from petrol to LPG.
Why? You are spending an awful lot of time to get a petrol engine to run CNG and even then it is way down on ...

What ECU is being used for fuelling is pretty much irrelevant. He's got no spark but has got a signal from the crank position sensor and the cam sensor, so they will be providing pulses from which the ignition pulses are derived. Depending on which ecotec engine is being used it may have an ignition ...

A bit late on this one but a P0420 code is a catalyst efficiency code. You have pre-cat lambda sensors which flip flop between 0V and 1V and post cat sensors that should stay at a constant 0.5V. If they also flip flop that says the catalytic converter isn't doing its job as they are measuring the ...

It's always interested me as to exactly just how many cars are on the road running LPG. Ignoring the minority that will be on the UKLPG database, the figure of 200,000 was mentioned some time ago as being the number registered with DVLA. But registered as what? My car is registered with the fuel ...

The standard gap on an NGK 6962 BKR6E is 0.8mm which works out to an old school 25 thou. If you to get a BKR6E-11, it will have a different part number although it is the same plug but with a wider gap, everything else will be the same (thread length, diameter, hex size, heat range, etc).

Why would ...

You'll probably find that it has knock sensors so will automatically retard the ignition timing if it detects a knock. I have one car with twin turbos and needs at least 98 Octane fuel, if it is run on standard 95 Octane it is immediately obvious that the timing has been retarded the first time you ...

No matter how hot the ambient temperature is, the vaporisation temperature of Propane is -44C so I'm not surprised you have problems at high loads without the reducer being plumbed into the cooling system.

It's here viewtopic.php?p=128807&hilit=rs232.jpg#p128807

Porpoising a bit there mate, you need to trim the bow down a bit. That will stop it and increase the speed without increasing the revs.