James, while I do realize the importance of what you are saying, having trucks that can only run 12-15 hours before needing repair isnt a viable option for anyone.

There has to be a solution somewhere, the trucks are passed their warranty period, so that isnt a concern.

Its difficult to run a business when you cant ship your product out of your truck dock.

Had the local Yale dealer done more to help rectify the situation up front, perhaps this customer wouldnt be in this situation.

Fuel quality is a big issue as of late. There doesnt seem to be alot of consistancy in fuel from source to source. I checked into this quite a bit on behalf of this customer and many fuel supply companies are concerned about fuel quality. Even HD5 spec doesnt guarantee that you are running good fuel. There are too many sources for possible contamination. This seems to be a problem for Yale/Hyster in the western part of the US with companies that have large storage tanks. Even though all the fuel essentially comes from the same pipelines in a given area, how its stored and transferred can lead to contamination. This is info right from fuel suppliers, not just hearsay. Of course the local fuel supplier says his fuel is fine. Fuel companies say that storage tanks are in need of cleaning every 50 years. this customers storage tank was cleaned less than 15 years ago. So if storage tank cleaning is an issue, when was the last time that the fuel supplier had a tank cleaning? if the fuel at the supplier has too much oil, then so will the fuel at the end user. This fuel doesnt just sit in this customers tank, the go through 50 tanks a day, running three shifts.

Had Yale (Nacco) done more research they would have seen that fuel quality could be an issue, and perhaps not designed a truck that isnt robust enough to accept poor fuel. This doesnt happen to other manufacturers trucks, such as Nissan whose fuel injected propane engine in my opinion is the best on the market. Quite frankly, the fuel injector is of poor quality. After taking apart a fuel system on one of these trucks, the injector is a very low cost, tempermental part, requiring a filter of such a small micron that its almost quaranteed to plug. The filter is also very small in physical size, meaning that there is less filter volume, and therby less material is required to plug the filter.

After having tested the customers fuel by an independant source, there was not excessive amounts of oil or contaminants in the fuel. Also, they have taken these trucks and run them on new aluminum tanks, with fuel supplied directly from the source and still have this problem. One truck was sent into the Yale dealer for a complete fuel system cleaning and rebuilding. Totalling $1400 ( all billed to the customer) the truck came back with a tank from the Yale dealer on it and ran about 12 hours, before plugging the filter up.

As to the carb issues, the Yale parts book lists a thermostat for the regulator. These trucks dont have it installed, but since its in the parts book it seems that installing it shouldnt affect the emissions. This is a California emissions truck that isnt being unsed in CA.

No other customer in this vicinity has trucks equipped like these, meaning they havent sold any more like it in this area. The new trucks Yale is selling now are slightly different in configuration, they are all fuel injected (not fuel injected/carbureted) but the Yale dealer wont tell the customer if it has the same cruddy injector for the start/idle circuit, of it is has the same fuel filter as these trucks.

Calls to Yale directly do not get replies, they keep referring them to the dealer. This is terrible customer service on Yales part.