I service Yales/Hysters (the new identical trucks, different badge) with the fuel injected GM 2.4. After a LONG process of investigation I found a couple of things. First- the fuel is not as clean as it needs to be for these newer systems- no matter what you buy it or where you buy it. Second- The fuel system on these newer Hysters/Yales is sourced from European sources from the automotive industry- the challenge is they didn't include the filters that are installed on the automotive equivalent.

After going round & round about dirty fuel, adding filters, adding injector cleaner to the LP etc. I made the following deal with the customer- I would modify the LP system at no initial charge- if the changes allowed the lifts to run for 6 months with no LP related problems- I would then invoice them for the total of work done- adding 1.5% per month for the 5 months that I held the invoicing ( the lifts would run about 2 months before needing a new regulator & 4 new injectors- total parts of about 1500.00).

The modifications were: adding a thermostat in the coolant line coming from the regulator, machining the injector openings.010 more open, adjusting the regulator to a lower pressure to compensate for the added flow, adding cooling vents in the hood assy, adding a coalescing filter between the regulator & injectors & finally- adding a fuel injector cleaner to the filter assy at every PM (every 200 hrs).

So far we're at about 8 months with no LP issues. Customer was reluctant to allow the modifications but now is very happy with the reduced costs & downtime of the units.