Re: 544 hydro fuel system problem

Posted by jimb2 on June 19, 2012 at 16:31:57 from (99.241.38.122):

In Reply to: 544 hydro fuel system problem posted by philcase on June 19, 2012 at 11:16:00:

Hi, your 544 has a German D-239 Diesel engine.
The Bosch pump has no bleed screws, just loosen one of the injector lines at the rear of the pump and start engine. Becareful not to come in contact with the high pressure Diesel fuel from the injector line.
If after re-tightening the injector line, engine is still not running properly, check fuel flow from tank to fuel filters, then filters to injection pump. Some models had a steel braided fuel line between the injection pump inlet and the last fuel filter. This line can collapse inside and restrict fuel flow to pump. Another problem can be a blocked return fuel line.

Hope this helps
JimB

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