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Bogging down

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alfred

Member
"Need help. Have twin 270&#39

"Need help. Have twin 270's both run great. They are 83s an just turned 1,000 hours. I have 2 30 gallon tanks up front and 2 80 gallon tanks in the aft. I haven't any issues on the front tanks but on my port the enginge bogs down WOT in about 5 minutes. Drained all but a couple of gallons out of the tank last week. she ran great to the gas dock so I filled it up (stuipid) Put in Startron, denatured alchol and nothing helping. What am I missing?"
 
"If it runs fine on the forwar

"If it runs fine on the forward tank, then the aft port tank system sounds like the culprit.

dedicated filter in that loop changed?

anti-syphon valve acting up in that tank, maybe.

'83 - maybe the fuel line needs to be changed. could be delaminating inside and restricting flow.

last item - maybe the valve(s) in that loop are worn and leaking air under high fuel demand."
 
"and check the vent hose for t

"and check the vent hose for that fuel tank - any obstruction there will impede full fuel flow, too."
 
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