Thread: D4 2013 3.0TDV6 too much oil causes engine runaway

Ouch, if it was me I would buy another D4 the same year and keep the old one for parts and a reminder to never lend a car to anyone again
People wonder why I would never even consider lending my Disco to anyone EVER
Personally I doubt it’s simple as a sensor

Originally Posted by jonesy61

....... Took it to Rangie heaven...trust Damien with my chainsaw!...he gave me the bad news, she's stuffed. In too deep with finance to dump it, Damien hasnt got the time to rebuild for me so Im on my own. Got enough equipment to perform body off and I follow Christian on LR Time enough to have a go at rebuilding myself. I cannot get the thing to fire myself, it sounds like only one cylinder is down on compression but I'd like to know if its sensors or fuel or engine itself thats is causing it not to fire up.....

Damien says stuffed how? I'm guessing sensor/s coated in oil as it ran after runaway, so possibly something that the engine looks at to start but not while running or oil has since congealed or picked up particles to really read out of range. Could have even upset the EGR's, although I think this causes a warning or limp mode not non-starting.

EDIT: The more I think it about this the more I think it didn't runaway as it was able to be stopped. The extra oil affected something that changed the throttle response. Possibly from the high oil pressure getting past the turbo seals, causing black smoke on the exhaust side and coating sensors on the intake side.

RE-EDIT: I was talking to my mechanic and I think I got my theory the wrong way around. The high level oil has gone up the turbo drain and flooded the vanes resulting in exhaust side smoke and coated intake sensors.

A Gap tool will read codes for vehicles other than the registered vehicle.

What was stated as the damage?

If you decide to fit another engine which includes the turbos then at least a V3 Gap tool will be required to calibrate the turbine shut-off valve, or get a nearby workshop to do that.

Edit: Maybe it was obvious that the crank is broken. The engines often will run, sort of.

Doing 10,000 rpm for any period is outside of the Italian tune up category.

@Randlover, high oil level will not increase oil pressure.

I would be dropping the sump and checking the crank and bottom end, i would be surprised if the crank went after getting it running but you never know.
Can also remove the valve covers and rotate the crank by hand and see what the top end does.
Different scenario but the oil pump in my 2.7 D3 decided to divorce itself from the tensioner mount and although i feared for the worst, i just stripped it down checked everything.
1 bent exhaust cam and 2 cam cap bolts replaced, new oil pump and timing belt kit and 70k later still purring along.

_Prior to throwing down on a new engine. i would be pulling all sensors that you can get to including the throttle manifold and associated sensors MAP et. Give them a good clean and see what happens. It cant hurt. Baz