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severe Owners of the 2008 Ford F-350 have filed 11 NHTSA complaints about the fuel system, typically surfacing around 43,250 miles at roughly $1,200 to repair (U.S. federal records, as of August 2026). Source: NHTSA Office of Defects Investigation. See fuel system across all vehicles →
| Model year | fuel system complaints |
|---|---|
| 2005 F-350 | 17 |
| 2006 F-350 | 16 |
| 2007 F-350 | 4 |
| 2008 F-350 (this page) | 11 |
Of the 11 fuel system complaints filed for the 2008 Ford F-350, here's the actual mileage breakdown — failures cluster heaviest at 125,000-150,000 mi.
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
No new NHTSA fuel system complaint has been filed on this vehicle in over 13 years — the issue may be aging out of the active population.
Fuel spillage, in the presence of an ignition source, could result in a fire.
The manufacturer has issued service bulletins covering fuel system on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
FORD: SOME TRUCKS WITH 6.4L ENGINE WILL RUN ROUGH, SMOKES, OR NO START DUE TO GASOLINE OR ALCOHOL IN THE FUEL. GASOLINE/ALCOHOL LACK THE LUBRICITY OF DIESEL FUEL AND WILL CAUSE FUEL SYSTEM FAILURE.
full bulletin at NHTSA ↗SLOW FUEL FILL--MIL ON WITH DTC P0191.
full bulletin at NHTSA ↗WATER IN THE FUEL TANK BEHIND REAR AXLE - 6.0L, 6.4L AND 7.3L DIESEL ENGINE. UPDATED 2/29/08.
full bulletin at NHTSA ↗SLOW FUEL FILL.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
Owners report three broad categories of fuel system failure on the 2008 F-350 diesel:
Fuel pump and pressure issues: High-pressure fuel pump failures occur with rough idle, loss of power, and stalling. Narrative #1 describes a fuel sending unit where the internal plunger falls out, causing the pump to draw air from an emergency intake line even when fuel remains in the tank—resulting in three complete stalls over six months, with the gauge still reading 50+ miles. The owner had to bleed air lines and prime the pump roadside. Ford service acknowledged this is a known manufacturer defect but denied warranty after 36,000 miles, despite acknowledging it commonly occurs later. Narrative #7 cites an $8,500 high-pressure pump replacement; dealers blamed contaminated fuel, but the truck has a two-filter and fuel-water separator system designed to prevent that.
Tank and contamination failures: Narrative #5 reports fuel tank delamination by 13,000 miles, with tank coating separating and clogging injectors. Narrative #9 describes a fuel system "explosion" at 26,000 miles with repeated failures of the same type through 31,000 miles. Narrative #2 reports excessive oil and fuel spillage from an undiagnosed cause, white smoke choking the driver, and dealership refusal to diagnose the root problem—only replacing oil and filters.
Electrical and mechanical: One owner reports a damaged wire harness that shorted the fuel pump at 41,200 miles; another describes stuck throttle pedal requiring replacement.
Same Ford F-350 fuel system reports on nearby years: 2005 · 2006
The plunger that controls the emergency fuel valve in the sending unit falls out of its housing, causing the pump to draw fuel from an air-intake line instead of the main suction. This creates air in the fuel system even when fuel remains in the tank.
When: Occurs beyond 36,000 miles; narrative #1 reports 3 occurrences within 6 months
Symptoms owners cite: Engine stalls while driving with fuel gauge still showing 50+ miles to empty; Vehicle loses all power (no power steering); High and low fuel pressure diagnostic codes; Fuel lines draw in air requiring roadside bleeding and priming
Codes mentioned: High pressure code, Low pressure code
Repairs/costs cited: Owner removed fuel tank and extracted dropped plunger from tank; Ford service confirms this is a manufacturer defect; replacement fuel sending units required; labor performed roadside
Recalls/TSBs owners mention: Ford service acknowledges this is a manufacturer defect but refuses warranty coverage beyond 36,000 miles despite knowing it commonly occurs after that threshold
Fuel pump loses pressure under load, causing rough idle, reduced power, and stalling. Dealers attribute failures to contaminated fuel, but the 6.4L diesel's two-filter and fuel-water separator system is supposed to prevent such contamination.
When: Narrative #3 reports failure at unspecified mileage on 100k-mile warranty truck; narrative #7 at high mileage with rust in tank; narrative #8 at 140,000 miles
Symptoms owners cite: Rough running with no high-end power; Vehicle stalled while attempting to merge into busy traffic; Unable to accelerate above 60 mph during merge; Loss of power on inclines, severe difficulty accelerating uphill; Slow acceleration down to 20 mph on highway
Repairs/costs cited: Narrative #7 cites repair cost of $8,500; pumps and filters serviced at dealer
Recalls/TSBs owners mention: Dealers blame contaminated fuel and deny warranty claims; Ford Motor Company customer relations representative stated contamination was cause and refused 100k-mile warranty coverage; narrative #7 notes Ford should cover as filtering system failure if contamination caused damage
Fuel tank interior coating separates, causing tank material to break apart and clog fuel injectors and downstream fuel system components.
When: Occurred by 13,000 miles (within 2 years of ownership per owner)
Symptoms owners cite: Tank material particles lodge in fuel system; Potential fuel injector clogging
Repairs/costs cited: Dealer replaced fuel tank under recall campaign 07V139000 (PCM reprogramming)
Recalls/TSBs owners mention: Recall campaign 07V139000 involved PCM reprogramming; delamination discovered during that service and tank was replaced
Damaged wire harness shorts out fuel pump, causing complete pump failure and stalling.
When: Failure mileage 41,200 miles; occurred beyond warranty coverage
Symptoms owners cite: Vehicle stalled while driving at 55 mph; Check engine light illuminated
Repairs/costs cited: Wire harness and fuel pump both replaced
Recalls/TSBs owners mention: Manufacturer provided no assistance or warranty coverage as vehicle was out of warranty period
Fuel pressure regulator stops functioning, reducing fuel delivery pressure and engine power.
When: Failure mileage 140,000 miles
Symptoms owners cite: Loss of power when ascending incline; Extremely difficult to accelerate uphill
Repairs/costs cited: Vehicle was not repaired per narrative
Recalls/TSBs owners mention: Manufacturer was contacted but no response documented
Fuel system becomes contaminated, requiring multiple repair attempts. Root cause of contamination not identified in narratives.
When: First failure at 26,000 miles; continued through 31,000 miles
Symptoms owners cite: Fuel system explosion while driving 45 mph; White smoke and strong fuel odor from exhaust; Oil and fuel spillage over engine and filter
Repairs/costs cited: Vehicle repaired twice; same failure recurred requiring third repair; dealership focused on oil and filter changes rather than addressing root contamination cause
Recalls/TSBs owners mention: Manufacturer was contacted; no response documented in narrative
Excessive oil and fuel spillage over engine components causes white smoke from exhaust and choking odor. Dealerships replace oil and filter but fail to diagnose underlying cause, potentially related to fuel injection or regulator failure.
When: Occurred within first year of ownership; narrative #2 reports initial failure on 08/02/2010
Symptoms owners cite: White smoke from exhaust pipe obscuring visibility; Smoke odor choking driver; Oil and fuel spillage visible over filter and engine; Engine noise prior to failure; Vehicle failure on highway
Repairs/costs cited: Dealerships replaced oil and filters; narrative #2 suspected fuel injectors as cause but dealership did not pursue diagnosis
Recalls/TSBs owners mention: Dealerships provided reactive maintenance (oil and filter changes) but offered no root-cause repair or warranty coverage; owner charged labor costs for spillage cleanup
Accelerator pedal becomes stuck in wide-open position and does not return to idle.
When: Timing not specified in narrative #10
Symptoms owners cite: Throttle stuck wide open during normal acceleration; Pedal will not return to idle position
Repairs/costs cited: Dealer replaced gas pedal assembly; owner retained old part
Synthesized from 11 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
Tl* the contact owns a 2008 Ford f-350 sd. The contact stated that while attempting to ascend an incline, the vehicle lost power, making it extremely difficult to accelerate uphill. The vehicle was taken to the dealer where it was determined that the fuel pressure regulator had failed. The vehicle was not repaired. The manufacturer was contacted about the issue. The failure mileage was 140,000…
It's a meaningful issue. 11 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $1,200.
Across the 10 complaints that reported odometer mileage, most fuel system failures cluster between 13,000 and 70,000 miles, with the median around 43,250. A quarter of owners report trouble before 13,000; a quarter make it past 70,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
Independent shops typically charge around $1,200 for fuel system repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Yes — 1 active recall(s) cover fuel system issues on this vehicle. Recall fixes are always free regardless of mileage or warranty status. Use the VIN decoder at the top of the page to check if your specific vehicle is affected.