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Lar_s's avatar
Lar_s
Explorer
Mar 14, 2014

New Turbo on - still sluggish on hills - fuel?

OK, took forever to locate and get a new turbo, had that installed, road tested with the computer and all seems well. Unfortunately, it's still sluggish on hills.

If you've followed this thread I've also got algae or bacteria growing in the tank, though you'd think with 0 and below temps they'd hibernate. I changed both fuel filters 100 miles ago and the fuel looks clean in the plastic see through cup, though when I changed them, the inside part of the filter contained a dark matter (bacteria ?) Could this be enough to make it really sluggish on hills? I charged the tank with biocide, though perhaps not enough. Should I recharge the tank and change to new filters?

I've also changed the air filter 100 miles ago. No black smoke out of the exhaust.

BTW, the turbo only had chips out of the cold side, the hot side looked good.

Advice please.
  • Definitely a fuel problem!! Get the fuel system clean before throwing any more money away on it!!
  • I have struggled with that issue with a Detroit 8V92 DDEC I for too many years. I am sure it's a wiring issue as everything else has been checked and the engine was even replaced. No matter, I still have no power when it counts. Run down the road at 75 all day long....climb a hill at 25-40 MPH when I used to climb the hills and pass all the 18-wheelers!
    Prevost will not help and Detroit will not help so we just keep plugging away at any suggestion from anyone anywhere hoping someone will trip over the actual solution.
  • Contaminated fuel = plugged fuel filter(s) = reduced fuel flow = sluggish performance under load. Runs great at idle on light load though. Been there, done that.

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