Hi all,

I have a Hyster LPG (2011 I believe) H155FT., s/n J006. We have just replaced the engine with a reconditioned GM/Chevrolet 4.3L V6 LPG engine and subsequently it now shuts down on right hand turns (this issue wasn't occuring prior to the new engine). We have looked over it all and can't find anything wrong with it, nor does it have any codes showing on the dash. We have:

-Replaced the dash
-Replace oil pressure switch
-Replaced the MAF sensor
-Replaced the coil
-Replaced the igniter
-Replaced the throttle body
-Replaced the gas converter
-Replaced spark plugs
-Replaced HT leads
-Replaced distributor cap
-Replaced stall valve
-Replaced crank angle sensor and CAM angle sensor
-Replaced PDM.

We have tried putting the gas bottles on different angles (vertical and horizontal).
We put the forklift on blocks and under throttle and the issue doesn't arise, turning locks to lock.
We have pulled, protted and stretched every harness while the machine is running to try replicate the fault, however no luck.

Has anyone had a similar issue, or have any ideas as to what we can try?