Amazon: LPG Volvo 122 b23et turbo problem

[Gavinh]

Originally Posted by classicswede

VX3 would not be a cam of choice for making drivable power but not likely your problem here.

More photo's would help identify your issue but I would say the main thing is the fact you are running blow through. To go blow through the vapouriser has to be balaced to manifold pressure and getting the balance right is VERY hard and often will not work in all conditions

Suck through will give much more reliable fuel mixture but if you do have a backfire it will be much bigger

So there is a balence pipe running be converter and in front of the dump valve, and have attached some pict

[classicswede]

The system is more impco style than euro style so not quite the same method.

On the Euro systems you normally need to restric the balance pipe to get it to work right.

First thing you need to do is fix a means of monitoring the fuel mixture to see if you are going rich or lean

[Gavinh]

I assume you mean an O2 sensor, the previous owner fitted one but it's very erratic.

[classicswede]

Does it have some kind of display to show mixture?

[Gavinh]

Yeah it has a display for an 02, some Chinese thing, I'm looking at getting a decent one soonish. But going to bite the bullet and take it to a specialist today to get some advise with the setup, removing the bov, going back to stock and changing the tank set up.

[Gavinh]

Spoke with the lpg mechanic, as much as he said it can be tuned and made to run well, he said it would be easier long term to pull it out and go efi, to find a tuner to work with it and get it going well would be the hardest thing because of the gas research. I have tried contacting companies who work with gas Reaserch and the have not returned call or emails.
So gonna bite the bullet and go efi, thanks the the suggestions and help.
Gav