2006 VZ SVZ - Tips on running with gas

[boyscout]

I just bought a VZ SVZ it has dual fuel.
However I have never run gas before so I do not know how it interacts with the engine.
I have heard stories about running it too much on gas and it damaging the engine.
However I do care about the new car and I was wondering If I could get your opinions on what would be the correct usage ratio between the two fuels.

[poweredbycng]

Your VZ will have a sequential gas injection system. You will not experience any of the issues associated with older gas systems (backfires, poor performance, rough running). The engine will operate exactly the same on gas as it would on petrol and you will get the same power. The system will ALWAYS start the engine on petrol so ensure that you ALWAYS have some petrol in the tank - at least 1/4 tank is good. You will want to give the car a good run on petrol at least once a week and I would recommend using at least 95RON premium unleaded to ensure your petrol fuel system stays nice and clean. Maintenance-wise, you need to keep up with the usual servicing and pay extra attention to your ignition system (get the mechanics to check your coils and plugs each time). Because of the more stringent ignition requirements, I would be inclined to get the car serviced by an LPG specialist rather than a normal mechanic. Apart from that, drive it like you would drive a petrol-only car and enjoy the savings!

Regards,
Dave

[boyscout]

Thanks for your message. The thing is the car seems like it is actually rough on gas. And there is a definate clicking sound from under the bonnet only when on gas. Also when you stop the car and turn the ignition off you can smell gas outside the car. Is this normal?

[poweredbycng]

Thanks for your message. The thing is the car seems like it is actually rough on gas. And there is a definate clicking sound from under the bonnet only when on gas. Also when you stop the car and turn the ignition off you can smell gas outside the car. Is this normal?

Firstly, if it is running rough, look for a licensed gas fitter who deals with IMPCO-BRC 'Sequent 56' injection systems (assuming you have a factory dual-fuel vehicle) and ask for a tune. Please remember that you will need to get the gas system tuned and serviced every year or 20,000km, whichever comes first. The service includes a replacement gas filter which sits between the gas regulator and the gas injectors. Before you get the gas system serviced, ensure that the petrol system and other essential engine components (i.e. ignition) are in tip-top shape. Remember, spark plugs do not last as long on a gas engine as they would on a petrol engine.

Secondly, the tapping sound from under the bonnet comes from the gas injectors. If you pop the bonnet, the gas injectors sit on two rails on top of the intake manifold. You can't miss them.

Thirdly, you should NOT be able to smell gas at all, even if/when the car is running. Again, get your gas system serviced.

Regards,
Dave