This LRO reader emailed LRO.firstname.lastname@example.org to ask our experts for a solution to starting problems when his Range Rover P38 is at temperature.
I have two Range Rover 2.5 DSEs – one 1996 and one 1997. Both of them are awkward to start with a hot engine; from cold they start on the first turn of the key. I have done an engine overhaul, injection pump overhaul, injector change, starter change, battery change and have set the timing by the special tool – but still the problem persists.
Simon Yip, Perak, Malaysia
This is a well-documented, common problem with the diesel P38. The usual cause is wear in the injection pump, so it may be worth checking with whoever reconditioned your pumps to see exactly what was done.
Another option is to buy a hot-start rectification kit from a firm such as Taw Park 4x4. These kits fool the electronic control module (ECM) into thinking that the engine is cold at every start-up; this then runs the fuel pump and glowplugs, and adjusts the fuel timing. Once running, the system switches off so that all engine parameters are as they should be, so the engine will run correctly. The kit, which costs about £35, is simple to fit. Admittedly, this hides the problem rather than cures it, but the end result is that the vehicle starts from any temperature and runs properly without spending a fortune.
This workshop advice appeared in the December 2015 issue of LRO. Back issues are available to download on digital devices here.