Sudden loss of boost under hard acceleration
#1
Sudden loss of boost under hard acceleration
Got on the throttle hard and felt truck just suddenly fall on its face. Rail pressure had dropped along with boost, no CEL. Truck ran ok but no power if accelerating beyond a granny pace. No smoke. Not making oil, no blowby. Startup and idle smooth. EJA diales to stock.
Replaced both my aux caterpillar filter, stock canister filter. Problem became 25% better. Ran a volume test on lift pump, produced less than 200 mL in 10 sec. Replaced lift pump. Another 25% improvement.
At this point testing showed my rail pressure stayed around 20-22kpsi at WOT, but at WOT I would drop all boost suddenly at 20 psi. Backing off the pedal and reappying it slowly made power but only if acceleration was gentle. Sudden pedal mashing caused boost loss instanyl.
Opened hood and checked boots, found one with a oil stain right at the turbo outlet. Clamps loose. Tightened clamps, about 20 percent better.
All data based on feel to this point as rail pressure ran at 20-23kpsi after the fuel work. APPS showing steady based onEJA reading
Tomorrow i will do a hard reset of the truck-pull batts and EJA connector
Im also getting a boot, hopinng the current one is burping suddenly then sealing up when it closes.
2006 5.9 running AFE bladerunner turbo, edge juice w/att, engine built by DFC diesel, 5" exhaust.
Replaced both my aux caterpillar filter, stock canister filter. Problem became 25% better. Ran a volume test on lift pump, produced less than 200 mL in 10 sec. Replaced lift pump. Another 25% improvement.
At this point testing showed my rail pressure stayed around 20-22kpsi at WOT, but at WOT I would drop all boost suddenly at 20 psi. Backing off the pedal and reappying it slowly made power but only if acceleration was gentle. Sudden pedal mashing caused boost loss instanyl.
Opened hood and checked boots, found one with a oil stain right at the turbo outlet. Clamps loose. Tightened clamps, about 20 percent better.
All data based on feel to this point as rail pressure ran at 20-23kpsi after the fuel work. APPS showing steady based onEJA reading
Tomorrow i will do a hard reset of the truck-pull batts and EJA connector
Im also getting a boot, hopinng the current one is burping suddenly then sealing up when it closes.
2006 5.9 running AFE bladerunner turbo, edge juice w/att, engine built by DFC diesel, 5" exhaust.
#4
#6
#7
Problem was air filter?
You dont have to bother with aftermarket filter the stock is good to 500+hp. There are a couple mods you can do to stock box to improve flow if desired like remove veins from inside intake pipe and Swiss cheese the bottom of the box.
The after market Kits are helpful if you want high hp and/or more turbo noise.
You dont have to bother with aftermarket filter the stock is good to 500+hp. There are a couple mods you can do to stock box to improve flow if desired like remove veins from inside intake pipe and Swiss cheese the bottom of the box.
The after market Kits are helpful if you want high hp and/or more turbo noise.