2005/6 Opti 135

[FMP]

Will occasionally fall on its face and stall or need to throttle back to recover. No start or other running issues, will wot no problem, no water in fuel. Low hrs less than 200. Ideas?

[flabum1017]

Fuel restriction, crap in high pressure pump fine filter (bottom of high pressure pump), stuck or plugged anti-siphon valve, collapsing / disintegrating /pinched fuel hoses, bad low pressure pump, bad high pressure pump, loose electrical connections..... failing pressure regulator diaphragm............ any of the above


Get a fuel pressure tester and see it your'e losing pressure. Should be at 90 PSI all the time.

[FMP]

I figured crap but , will check thanks