Re: Last Try On Roosa Master Pump.

Posted by Weldon on January 26, 2005 at 06:59:59 from (151.213.98.33):

In Reply to: Last Try On Roosa Master Pump. posted by Davis D. on January 25, 2005 at 18:14:58:

Make sure fuel is flowing to the filter, vent the fuel system again and you should have fuel available in the pump. Air is trapped in the lines between the pump and the injectors. Loosen fuel line connections at least one revolution ( or more, if needed ) at all four injectors. Turn engine with starter or by pulling, until fuel is spurting from all four lines . Tighten connections, heat glow plugs,( operator's manual says 1 min. for above freezing ,1 1/2 min. below freezing ). Engine should start.
I rebuilt a 504 a few years ago and had same problem. Followed directions about venting fuel system in shop manual and operator's manual to the letter, unfortunately , no mention was made in either about need for loosening injector line connections. I cracked connections but found that they needed to be really loosened up to get air out . Weldon

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