Had a look over this yesterday, following reports it wasn't quite performing on LPG as it should do.
First observations:
High quality Romano kit. Older one, but, it's a sequential conversion, and there are no obvious problems with this.
Electrical connections, on a first glance, looked to be reasonably tidy, as did the routing of the loom.
The vapourisor, LPG ecu and associated components were well located, and properly mounted, with decent brackets in place.
Although done in 2002, it certainly doesn't look like one of those 'do it in a day outfits'.
So the bottom line is - no serious problems with the LPG. The kit is IMO perfectly salvagable, and a collection of small improvements should see a big difference.
Initially, I noticed a misfire on gas.
So - my first observations upon opening the bonnet were......
...... I can smell gas, big time!!
Issues noted are -
1) Reducer plumbing. As I suspected before opening the bonnet, this has been achieved using T peices in the matrix hose, meaning the VAP will not get a constant coolant feed. That said, it was red hot, so I think it was sufficient. This could be improved, but I don't think is key to it's poor running.
2) Gas leaks. With it running on LPG, I wiggled a gas hose on the 1-3-5 bank, and heard a HISSSS! Upon further investigation, all hoses, the large and small vapour ones, are all very loose - and despite being secured with clips, I could pull most of them directly off with my fingers!
I bent one over a little, and it immediately split in my hand. Indicating they are old, brittle, and past their use by date!
I could see the 1-3-5 main vapour hose had been routed directly above the EGR valve. A slit had burnt into the bottom of this hose, causing quite a substantial gas leak!!
As a short term measure, I have replaced all of the vapour hose, large and small, with new hose and clips. I've also put some heat resistent material around the hose near the EGR (short term measure).
So now, instead of loose floppy brittle hoses, they are all now nice and secure, and leak free.
This had the immediate effect of curing the misfire, and the engine was no longer 'hunting' on LPG
Longer term, I recommend the following
1) Plub the vap in correctly, to the coolant feed.
2) Change the liquid phase filter.
3) The nozzles are drilled into the top of the plenum. Unsure as to whether or not there are "straws" - but I feel it would be best to discard this, and fit nozzles pointing straight into the valves.
4) Get the software, and plug the diags in. Ensure ECU is running latest firmware (unlikely) and check things such as calibration/mapping, gas pressure, and the usuals.
5) Re-route all the vapour hoses, including getting that one pipe away from EGR. One bank is considerably longer than the other, making me wonder if the banks are receiving an inconsitent gas feed.
All in all though, it's definitely not a bad install
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Topic: Appraisal - BlackViper's LPG install (Read 920 times)