2KD-FTV Hiace Issue

[ee904age]

A friend of mine has a 2006 Hiace with a 2KD. After it's been sitting for anything over an hour or so, when you start it, it won't idle. The revs will fluctuate by a couple of hundred RPM and if you don't give it some throttle it will stall. If you feather the throttle for the first 5 seconds or so it sorts itself out and runs fine.

He just had it serviced (not at Toyota) and they suggested getting it read with a scan tool, but it sounds more like a fuel supply issue to me than electric. He also heard from someone to fit a check valve in the supply line to stop fuel draining back to the tank, but basic diesel theory suggests if that was happening it would stall regardless of what you do with the throttle?

Any suggestions chaps? Also, I haven't looked for the diagnostic plug on it, but does the trusty old paperclip scan tool work on these?

[Lloyd]

Take it to a dealer. Basically everything engine-wise on those needs a scan to see what is actually happening. Fuel pressure, fuel return etc is all monitored by the computer. They should be able to have a quick look and see what is out of range, if anything, to start with.

[gepsk8]

Make sure batteries not shagged, genuine fuel filter, fuel system not sucking air thur back washers, of fuel line.

[Phothog]

Any suggestions chaps? Also, I haven't looked for the diagnostic plug on it, but does the trusty old paperclip scan tool work on these?

Metering valve on the high pressure pump is most common issue for this symptom,
and is quite possably sticking..

At work, We replace quite a few weekly with a new updated valve...

And no the old paper clip trick wont work, you need a scan tool to read it.

Chris.