V8 (with LPG) Problem....

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Just been on the phone to Tinley Tech to ask about a service kit for the condenser, was advised that the bigas condenser was a simple piece of kit and that if the diaphram was gone it would be pumping far too much gas into the engine and that it would be running rich

They suggest having the new leads and coil pack fitted and a further tune up and go from there.............

Any more ideas Eightinavee?
 
I've bin watching this thread with interest Tweets.
You've spent a shed load of money out on this car to still keep experiencing these problems.
Get it running A1 on petrol and then get it to the best LPG specialist you can find and be prepared to have your system ripped out and replaced by a more widely known and proven system - the LPG specialist I use recommends the Prinz system.
Maybe the previous owner couldn't get it running right and this is why you got it for a good price?
 
Hey Boomer, it is running A1 on petrol :) I thought it wasn't because I was flicking back and fore between petrol and gas, however I was told that I should drive on nothing but petrol to give the adaptive learning ECU summat or other to give it chance to be spot on, and the mechaninc was right!!

When I first bought the car, she was running right, it was only after 2 month of owning her that she went wrong, I wouldn't have bought it if it was running like it is now when I went on the 35 mile test drive,

technically I've only spent about £180 on getting the gas tuned up and diagnostics to diagnose what the problem might be, both diagnostics sessions with the same garage, they are 99.999999999% sure it's because she is running lean, yes I've bought a new coil pack, bout £150 and new leads (£80) but the leads would have been getting done anyway, I also wanted the rocker cover gasket fixed as the oil is ****ing out of it faster than I can pour it in the top of the engine so I thought while the inlet manifold was off to do the coil pack (heard they can break down) while we were in there to save 3/4 hours labour at a later date

I have been advised by Tinley Tech to fit the leads and coil pack and re tune it, then if the guy who tunes it can't get it to go right they want him to call them so they can walk him through some other stuff to see if injector rails/condensor/ECU are faulty, I have been toying with the idea of converting my system to an AEG system ( I presume all I need to change is the ECU, Condensor, Injector Rails, some piping and wiring????) as AEG is what my local LPG specialist specialises in...
 
nope, garage has advised my engine is perfect and runs very well on petrol, its ony when switched to gas it runs lean, have been advised not to run on gas until it's sorted or I will **** it.....
 
nope, garage has advised my engine is perfect and runs very well on petrol, its ony when switched to gas it runs lean, have been advised not to run on gas until it's sorted or I will **** it.....

Running lean could possibly make an engine run hotter.
It has been bandied around in the past that the leaner set up on Gems/Thor 4.0/4.6 engines may be a contributory factor where their infamous cracked block problem is concerned; As far as I'm aware this is unproven.
As you have the type of V8 block that may crack, it's perhaps (as your garage have advised) this reason why not to run it lean til it's sorted.
I have not heard or know anything of the AEG gas system, so you let us all know about it when you've had it fitted.
 
my understanding is that...

LPG does not have the "cooling wash" effect of petrol.
LPG flame rate (burning pattern) is different to petrol and therefore increases the combustion temperature.
 
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