Heh, sorry mate my interpretation was that you reckoned it was a top of the range system... I now realise that what you meant was that an (maybe some) installer(s) advised you that it was the top of the range system. There are still a lot of numpty installers around that cling to the same viewpoint, don't have a clue how to rate any aspect of any LPG system but (in many ways) still blindly advise people such systems are 'top of the range', because that's what they were considered 14 years ago. Such installers should go back to fitting clutches, because they generally started out doing just that, haven't learned much since, are generally about as knowledgeable and skilled as my posterior when it comes to any aspect of fuel injection, especially LPG but to much lesser an extent even petrol, they charge too much and don't deliver. This situation is inadvertently endorsed by Prins' policy of only allowing 'established' garages to become their dealers - 'Established' garages are more likely to be general mechanics who fit clutches than tech wizard fuel injection specialists that are used to thinking outside the box. The better LPG installers will all fall into the latter category. I tire of installers of certain systems such as the Prins system telling customers they fit the best and are the best installers, when really I know they don't know what they are talking about and couldn't hold a candle. They are a one or two horse race, are completely oblivious to the capabilities of all the other horses and are many years out of date in their thinking and attitudes. But they are a dying breed.
I am happy they are still around, in a way, because they make me look good and I would much rather sort their mistakes in fitting injection equipment than I would fit tanks onto vehicles etc as part of what I (we all) must do when converting a vehicle. So, thanks to the dodgy installers, I get to do easier work and am made to look better
I was surprised Prins VSI2 took so long to be introduced following VSI1, and I was surprised at it's already nearly a decade out of date capabilities when it was introduced. Even today, the Prins system still relies on Keihin injectors and would be a very poor system without them. We could all fit Keihin injectors on any LPG system, and most combinations of parts would make for a better system than the Prins system, but it would be silly to spend so much on Keihin injectors these days because many injectors are on par with Keihin but are a fraction of the cost.
Yes those Prins valvecare setups are an unusual design even in the best cases... Let's say we need a container in the engine bay to hold lube fluid with a pipe coming from that container and eventually feeding into the engine, at the point of the container no pressurisation is necessary... Do we, A, design a system with an upright bottle that we can simply top up as required and which does not need to address any type of sealing at the bottom because the bottom is just the bottom of a bottle. Or do we, B, design a system where there is no vehicle affixed container, we design a fitting which is a hollow tube with a spike in the middle, the spike pierces a specially designed disposable bottle which hopefully seals against our specially designed lube system bottle which sits upside down on top and hopefully the seal between the bottle and spiky bit seals or else the consumer ends up losing all the fluid... It might depend on whether common sense or the will to limit consumers to your own product wins out. Imagine a wine bottle with the top sealed and hole in the wide bit at the bottom, you mount the wine bottle upside down onto a special contraption in your fridge, once the wine bottle is open it cannot be sealed again, cannot be topped up, makes about as much sense as that. Desperados in attempt to sell lube fluid, which is in essence parafin, simple as.
If you post a pic or two of your install - showing where the pipe from the valvecare bottle joins onto something other than the valvecare bottle and valvecare pump, I'll be able to advise what type of valvecare system you have.
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