This LRO reader emailed LRO.email@example.com to ask Julian Gilling about a slow starting issue on his diesel Range Rover P38.
My Range Rover P38 2.5 diesel takes ages to start from cold – or after having stood for a few hours. Help!
Brian Stone, Stroud, Gloucestershire
Sounds to me like a lack of fuel at start-up. Two common causes for what you describe are the in-tank fuel pump beginning to fail, or the injector leak-off pipes having perished. If your problem appears to be mostly when you have less than a quarter of a tank of fuel, I’d suspect the in-tank pump. It’s quite a job to change this – you either have to drop the tank, or cut and make an access panel in the floor beneath the driver’s-side rear passenger seat to gain access to the top of the fuel tank. If it’s just the same when the tank is full I’d suspect the injector leak-off pipes are perished, allowing air in and the fuel to drain back.
Because the fuel pipes are the easiest to do, I would start with them first anyway. Check them for dampness and if the rubber pipe beneath the fabric outer is perished. They’re a simple push-on fitment (with the help of a little petroleum jelly); and a metre length of fuel leak-off pipe shouldn’t cost more than £10 from a diesel specialist or agricultural engineer.
Unless these have been replaced in the past, I would suggest changing them anyway as they do deteriorate with age.
This workshop advice appeared in the Spring 2016 issue of LRO. Back issues are available to download on digital devices here.