Profess LPG LTD

Hello LOC. I really do not need to say much apart from, excellent homework brendangeorge. We have seen up close an LPG, Hydrogen run Mercedes. It makes tons of bubbles.. But for £750 I would prefer a Fairy liquid and water mixture. Hydrogen is extremely volatile. (Hindenburg). No thank you :). Any questions relating to this is best diverted to brendangeorge and his excellent review. Kind regards Leon Profess LPG LTD. (Possible future developments are Solar cell painted vehicles that can produce enough energy to feed the Brown Gas contraption (hydrogen cell). And to be honest i believe that the new man made super conductors (man made super diamonds) will revolutionize every industry from agriculture to power storage.) We got a long wait on our hands due to the oil tycoons etc. It is not all bad news though. Fracking will certainly push CNG and LPG down in price. The UK alone has approx 145 years of supply awaiting to get processed.

A word of advice. Take a few seconds on Google with the search words of Audi S4 Problems..... Good luck in what ever you decide. Kind regards Leon Profess LPG LTD.

If some one would take the lead and invite up to 30 vehicle, I am more than happy to provide refreshments, and as stated above the use of our ramps and OBD readers etc. Kind regards Leon Profess LPG LTD.

There are a few jumping around on ebay at the moment. A lot within the range of your repair costs. In age order... http://www.ebay.co.uk/itm/1993-LEXUS-LS400-GOLD-/261232724561?pt=Automobiles_UK&hash=item3cd2af0a51 http://www.ebay.co.uk/itm/1995-LEXUS-LS400-AUTO-DARK-GREEN-with-low-mileage-130-700-/141005116841?pt=Automobiles_UK&hash=item20d48f55a9 http://www.ebay.co.uk/itm/1998-LEXUS-LS400-SILVER-LS-400-/130923943888?pt=Automobiles_UK&hash=item1e7bacd7d0 Hope this helps. Best regards Leon Profess LPG LTD.

Hello Colin. A drop in compression by 25% is not a matter to take lightly. Although Lexus have stated that 143 is their guideline of disrepair, it may only take 1 turn over of the engine to place it within that criteria. In my opinion I would hold off from any repairs if they cannot guarantee any amount of miles on the repair. Sorry to be the person that brings you the bad news but i feel that you should be looking at an alternative engine or a new motor. Best regards Leon Profess LPG LTD.

Free and no account needed imageshack http://imageshack.us/ Upload and use the link in the add Image button on the top menu of the reply box. Hope this helps. Best regards Leon Profess LPG LTD.

Hello John N We have had a similar experience with a Toyota Previa. After converting the vehicle, the customer went away but could not go over 3,000rpm. We had no choice but to take it to a local Toyota *Expert*, who had diagnosed it to be the ECU and Gas related. After giving us a quote for over £1,200 we thought of obtaining a second opinion. In the meantime we had ordered the ECU from Eastern Europe for a mere £30. After installing the new ECU and obtaining a re programming from a local Auto Electrician (£125), the ECU didn't work. On the contrary it was in the exact same sorry state as the previous ECU. We then asked the Auto Electrician to take a look and to give his opinion. 1 Coilpack later and we were kicking ourselves for not checking the basics first. My question is, who on earth can determine that it has had a failed ECU when in fact it is a simple coil pack? What is worse in my opinion, is that they still call themselves *Experts*. Regarding the Valves Take a look at these This picture has been taken from a Vauxhall Zafira 1.8 that had suffered from a faulty EGR valve. The funny thing is that all Vauxhall engines suffer from these issues. Vauxhall themselves sell an EGR plate that completely removes the EGR valve. Yet these issues are instantly blamed on the LPG. Best regards Leon Profess LPG LTD.

Hmm I contacted the buyer.... She replied with the steering wheel had been changed...

Hello Colin. Any news? If possible can you keep us updated?. Kind regards Leon Profess LPG LTD

Hello Colin. NGK are a good make of spark plug. I cannot say they are the best for your vehicle, but they should not fail as drastically as described. LPG should not burn hotter than petrol if correctly mapped. It has a higher calorific value and RON which makes it burn longer.... The temperatures that Petrol and LPG create whilst being burned within the cylinder head could not melt a spark plug. Something more drastic has happened in my opinion, such as the cylinder was running lean or rich for too long. There is also the possibility of the plug not being fitted properly in the first place. If the plug was able to draw in air, you will have a rich mixture burning at all times. Once again, I wish you the best of luck. Kind regards Leon Profess LPG LTD. EDIT 1: 09:00 21/06/13 Take a look at this:http://www.lpgforum.co.uk/viewtopic.php?f=28&t=12342 Is this anything like your situation Colin?. Does it look like your plug? These images are not owned by me and I take no credit for posting them here. Credit goes to the owner of these images 00lewisd From http://www.lpgforum.co.uk/viewtopic.php?f=28&t=12342. Hope this helps you determine the reasons as to why your sparks went the same way as this 1 did. Edit 2. 08:00 22/06/13 It is also advised to look here for support from NGK. http://www.ngksparkplugs.com/tech_support/spark_plugs/p5.asp?mode=nml

Hello Colin. Yes you are correct. At present we are unable to service or provide repairs on any system other than AC Stag at Chesterfield. Our technicians are fully trained and authorised AC Stag installers. They have the expertise to look at other types of systems but we are reluctant in letting them do so,due to them not having the parts on the shelf etc. Here in Wales we service all types of kits at any time. I hope this helps and i wish you the best of luck with your diagnostics. Kind regards Leon Profess LPG LTD.

Hello Colin. I think i must have mislead you to think that we are not interested in your vehicle. That is not the case, I simply do not want to you to have additional costs to what you already have to pay now. It may be the case that there is no issue with your LPG system at all. In my opinion, you should get your engine examined thoroughly, that does not mean take the head off. Toyota/Lexus can use the the flexicam to look at your valves and pistons etc. They can also take your centre box and manifold off to examine your CAT. Try to limit their spending or you will be left with a heavy bill and a non running vehicle. If you are going to spend £1000 to examine your vehicle, you may as well get a new engine. If you need to have your LPG replaced by ours, I am more than happy to oblige. Whether it will be in Chesterfield or South Wales. I wish you the best of luck. Kind regards Leon Profess LPG LTD

Hello LOC. Bluesman and Brendangeorge has it in 1. You should never have an EML code on, after or because of a conversion. If you are going to purchase a vehicle with LPG already installed, I would highly suggest you to take it down to a Lexus dealership and find out its EML history. Also make sure you purchase it with a full service history and an LPG certificate. I hope this helps. Best regards Leon Profess LPG LTD.

Sorry for the delay. Apart from their over priced LPG and other related nonsense I wish to put forward a few discrepancies with AMR Auto's publication. Re: LPG PROBLEMS & Economy Drop posted by AMR Autos. I would like to start off by stating that we, at Profess LPG LTD, use AC Stag Premium http://www.ac.com.pl/en/produkt/296/stag-300-premium or ISA2 http://www.ac.com.pl/en/produkt/362/stag-300-isa2 control units for their efficiency and reliability. We also use the market leading Hana injectors and high performance reducers that can individually cope easily with 300BHP. Using these kit combinations, whilst listening to our fully trained technicians and the feedback from our customers who own 1 or more of the 8,000+ vehicles that have been converted by ourselves, we can state that we have a MPG drop of between 2-15% between LPG and Petrol. In our opinion if an installer can only obtain 15% or above, they need to go back to basics and get trained over the space of a year on an apprenticeship scheme, rather than buying a certificate from the factory or another installer for around £1500 and 2 days of training. AMR complain about the guarantee that comes with the LPG conversion. I also complain about the standard of the guarantee that our competitors offer. They offer up to 3 years warranty (factory standard) on parts and labour but have a clause in the conditioning of the warranty which states that the warranty is invalidated if you have picked up dirty gas….. Dirty gas… Can you explain to me how you, the general public are able to determine whether the LPG that you are picking up from Morison’s or the local Country Wide distributor is dirty or clean? I mean it’s not a sheet of white paper. The only way possible to check whether you are subjected to ‘dirty gas’ is to open the filter after every fill up… AMR Auto’s state this; Make Sure: if you do decide to have your car converted to LPG that you ask the installer to give you a written Guarantee that their LPG Conversion, together with any associated equipment including any Flashlube or other type of Valve Protection Systems used are suitable for your vehicle and will not cause Valve Seat Recession, Burnt out Valves or Engine Damage whilst running on LPG, and that they will Pay in Full for any repair costs associated with the above. If they won't do this consider the risks, as repairs will cost more than the conversion in the first place, and the system will need to be removed to prevent the same thing happening again. We want to ask why they would want to stipulate such nonsense. How on earth can they place the blame of Valve Seat Recession (VSR) on LPG alone and not include many aspects as to why it may happen on Petrol. The most common cause of valve seat recession is in fact overheating of the engine. VSR is the erosion of the valve seat causing the valve to slowly sink deeper into the seat. It was a major issue for Leaded Petrol engines with soft valves. When they changed over to Unleaded the valves lost their protective lead coating and started to recede into its soft seat because of the intense heat (650C) and the constant hammering effect of the valves opening and closing left iron deposits to become micro-welded to the valve edge when closed. These micro-welds get torn off and are constantly used as an abrasive on the soft valve seat, digging deeper into the head over time. VSR is only a problem for the exhaust valve seats because they run at much higher temperatures compared to the intake valves. I see some other minor issues within AMR’s statement that I would like to give my 2 pennies worth. They state this; 1 litre of LPG weighs 0.67 Kilogram’s with a Calorific Value of 50.35 MJ/kg 1 litre of Petrol weighs 0.72 Kilogram’s with a Calorific Value of 48.00 MJ/kg 1 litre of Diesel weighs 0.832 Kilogram’s with a Calorific Value of 44.8 MJ/kg But Wiki States this; LPG has a typical specific calorific value of 46.1 MJ/kg compared with 42.5 MJ/kg for fuel oil and 43.5 MJ/kg for premium grade petrol (gasoline) After serving the public with over 1.1million litres of LPG I can also state that 1 litre of LPG weighs 0.51 kilogram’s. Unless FloGas likes to give us approx. 15% more LPG…… The Vauxhall Zafira head that is shown in the photos with the valve seat recession has had known underlying faults from the get go. Google search for Zafira 1.8 EGR Valve faults. If the EGR Valve is stuck open the engine runs hotter and everyone knows what happens to engines that run hot…. Valves wear and burn out…. They also suffer with the breather to the cam cover building up condensation and we all know what happens to the quality of the oil when water contaminates it…. I will post some images tomorrow from the same type of vehicle which has suffered from valve seat recession and valve failure due to the EGR and water contamination. It is funny to find the blame only exists whilst driving on LPG…. That is our take on most of the article. We will await a full report that is being undertaken by Strange Strange and Gardner to conclude our statement on any other related LPG issue. Kind regards Leon Profess LPG LTD.

Hello LOC. I apologise for the delay in getting back to you. We are extremely busy at present with the everyday running of our South Wales branch and the set up of our Chesterfield branch. I will hope to have some spare time over the next couple of days to reply to your concerns. I can inform you that Strange Strange and Gardner have taken the case and are happy to provide an impartial report regarding the matter. Best regards Leon Profess LPG LTD.