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Diesel leaking into sump - 2008 Nissan Navara 2.5

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Iseki 4320 engine problem. Diesel fuel filling the sump. Seems that fuel leaks into the sump when the engine has not been run for an extended period. We only acquired the tractor recently.


pull the fuel pump and have it overhauled by a specialist diesel shop
the fuel is leaking past worn elements and shaft seals you could always put a tap in the fuel line just before the pump but that would mean remembering to turn it on and off for operations

Aug 31, 2017 | Cars & Trucks

1 Answer

Is sump cracking a known problem with 3 ltr diesels


replace the drain plug gasket, they often leak there, then clean the sump and check for leaks,

Sep 03, 2016 | Cars & Trucks

2 Answers

I have a 2001 Durmax diesel 2500hd and diesel is getting in the oil any suggestion why.


the only way that diesel can get into sump oil is through a failed seal in the pump on the drive shaft
No easy fix so a trip to an accredited diesel service centre will be in order.

Jun 18, 2015 | Cars & Trucks

1 Answer

H100 diesel leak


Cracked Tappet cover, worn crank casing seals, cracked sump or worn sump gasket

Jun 01, 2014 | 2008 Hyundai H100 2.6iD

1 Answer

Engine oil level too high..


check for a seal leak in the diesel pump. If it is common rail the high pressure of the pump will be causing the fuel to leak into the sump past the pump gear. Best have a diesel pump shop check it out as they can do a pressure test first to be sure.. If it is a rotary pump then the leak will be still at the seal

May 04, 2014 | 2010 Mitsubishi ASX

1 Answer

Why the diesel and engine oil for together


For diesel to get into the engine oil there is a failed seal in the pump that is allowing the diesel in the pump to escape past the shaft and into the sump.. If it occurring slowly and over time then the problem will be leaking injector tips that are dribbling and allowing the fuel into the combustion chamber and down past the rings . Best discuss this with an accredited diesel pump specialist as the results are detrimental to a diesel engine.

Apr 25, 2014 | 2002 Isuzu Trooper

1 Answer

Kubota M 5030 2.8 6 cyl. Diesel in oil sump. Why?


Diesel gets in the sump from an seal leaking in the fuel pump through to the drive gear and out into the sump. If it has an inline pump( one where the injector lines are in a row at the top of the pump) the fuel will be leaking past the plunger elements and into the pump sump which then drains back tot he engine sump. IF it is slight but consistent sometimes injectors will dribble when shut down and the fuel will by pass the piston rings into the sump. Talk with a diesel pump and injector repair specialist for any faults particular to the Kubota fuel system

Apr 03, 2013 | Cars & Trucks

2 Answers

Mazda 6 2o diesel replaced turbo new unit same


There is a oil drain return from the turbo charger to the sump. If the sump oil level covers the outlet into the sump, oil will build excess pressure tin the turbo causing the sealing rings to leak oil in to the intake manifold. This would cause smokey exhaust and loss of oil. Try this. Drain the sump completely, refill with the exact quantity of oil to Mazda spec. Dip the oil and if the new oil level is lower than the full mark on the dipstick, you have found the cause of the problem. Mark this new level with a scriber or file and fill only to this new level. Hope this is the solution.

Jan 28, 2010 | 2004 Mazda 6

1 Answer

I find diesel in the oil sump


Have a specialist check the fuel injectors as this sounds liki they are leaking into the cylinders and it's finding its way through the rings into the sump.Note whats coming out the exhaust when you start her in the mornings.

Dec 01, 2008 | 2002 Land Rover Freelander

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