I have v40 2004 1.9 diesel sport which is having difficulty in starting. The battery and starter motor are ok and have had glow plugs fitted. Can you help! Thanks.

SOURCE: hyundai santa fe 2003 diesel difficult starting ok

CHECK INJECTOR LEAKAGE
COMMON FAULT WITH BOSCH INJECTORS

SOURCE: Problem with cold starting Ford 7.3L Diesel at > freezing temps

most likely the relay. its located to the left of the fuel filter( looking at the motor from the front). my experience is that they only last about 50,000 miles. the part costs about $20 at an navistar dealer. remove the cowl over the filter, disconnect the batteries(so you don't short the new relay out if you cross the polarity with a wrench) ,remove the four wires from the ceramic relay, un-fasten the relay from the base. reverse the process with the new relay. CAUTION; do not over-tighten the nuts on the wire studs, you could crack the ceramic relay.(iv'e done it) . hope this helps

SOURCE: 2.8l rd28t ohc 6cyl patrol

if only 3 plugs heat, probabilly one of the two pre-heat relays is defective ( or it's command ).
The relays are located left in the engin compartment, just in front of the battery and in the battery box. They should have green connectors.
If there is no fault found at the relays, but on their 'command', the pre-heat control box is located IN te vehicle under the steering column. ( Black plastic box with 4 screws, and a 16 or 20 position connector for engines with EGR )

Hope this explanation helps

Fabrice from belgium

SOURCE: mazda 6 diesel wont start

Have you run the car without fuel? There must not be any air in the fuel line... Blead the fuel line of air and try to start it. There should be bleader screws under the hood....

SOURCE: Glow plug problems. Engine won't start.

Did you ever find a solution to this? I have a 2000 Hyundai Galloper (basically the same car) and I am having the exact same problem. I have replaced the glow plugs 3 times in the past 12 months.