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Turbo oil lines carry pressurized oil to the turbocharger's bearings and drain it back to the pan. Route 66 Auto Repair in Upland repairs leaking or restricted diesel turbo oil feed and drain lines on pickups and vans. A leak here drips onto hot exhaust and smells like burning oil. A blocked line can ruin a turbo in minutes. Our ASE-certified technicians inspect both lines and the turbo, and put the repair in a written estimate.
What are the signs of a turbo oil line problem?
- Burning oil smell after a drive, strongest near the turbo
- Oil dripping from the back of the engine onto the bellhousing
- Blue smoke from the exhaust on startup
- Oil in the intercooler piping
- A new whine from the turbo after a leak was ignored
Feed line versus drain line
The feed line carries oil under pressure. A leak there sprays or drips, and a restriction starves the bearings. The drain line is gravity-fed. If it kinks or clogs, oil backs up and pushes past the turbo seals, which looks like a failing turbo even when the turbo is fine.
That is why we check both lines before blaming the turbo. If the turbo does have play or scoring, diesel turbocharger bearing repair covers what comes next.
Our turbo oil line repair process
Step 1: Clean and trace
Oil residue is cleaned so the source of a fresh leak is clear.
Step 2: Inspect the lines
Feed and drain lines are checked for cracks, kinks, collapsed hoses and worn fittings.
Step 3: Check the turbo
We check shaft play and look for oil in the intake and exhaust sides.
Step 4: Replace and prime
New lines, gaskets and O-rings are installed, the turbo is pre-oiled, and the engine is run and rechecked.
What's included in turbo oil line repair
Included on the work order
- 01Leak trace after cleaning
- 02Feed and drain line inspection
- 03Turbo shaft play check
- 04New lines, gaskets and O-rings as approved
- 05Turbo pre-oil before first start
- 06Leak recheck after heat cycle
Is it a need-now or need-later repair?
Need now: call
- Oil dripping on the exhaust
- Low oil pressure warning with a feed line leak
Need later: book
- A drain tube O-ring that is damp but not dripping
- Surface rust on a steel line that still seals
How pricing and timing work
Some turbo lines are easy to reach. Others are behind the engine and near the firewall, which may mean removing intake or exhaust parts. Price reflects that access, plus any gaskets required. You see the full list on the written estimate, and AAA members save 10% up to $75. For boost problems that show up at the same time, see diesel turbo boost pressure repair.
Aftercare
Expect a little smoke as residue burns off. Keep up with your diesel engine oil filter replacement, since clean oil keeps the feed line and turbo bearings healthy.
Frequently asked questions
Can a turbo oil leak cause a fire?
Oil on a hot exhaust or turbo can smoke heavily and, in rare cases, ignite. Treat an active drip as need-now.
Does blue smoke mean my turbo is bad?
Not always. A blocked drain line can push oil past healthy turbo seals. We check the drain before condemning the turbo.
Do you replace the lines with new ones or repair them?
Most turbo oil lines are replaced as a unit with new seals. Patching a pressurized line is not reliable.