MX285 No-Start

[IH1086-806-400Fan]

Having trouble with our MX285 losing fuel prime, causing a no start. We have gone through the cycle of opening the drain on the fuel filter, tightening it back up, then cycling the key 3 times waiting until the lift pump quits. The mounting bolts for the lift pump were 1-2 turns loose, tightened them and repeated the “prime” process. Still no start. Noticing what sounds like air hissing after lift pump quits. Assuming this is not normal? All pressure lines have been checked to ensure they are tight.

Side console displaying following engine codes:

- 00329

- 00281

TIA

[HydroTek]

Check the fuel suction line for loose or cracks

inline pre-filter clean ? / replaced ?

The hissing is telling you there is air in the system
gotta address that first off