cdt diesel starting problems - Page 5

The Garageman · 29th April 2017, 13:38

Sorry to hear you have that problem. My friend has still not got to the bottom of it. He has checked all the points that Jules recommends. I did suggest swapping the camshaft sensor with a known working item and that made no difference. His car has been laid up for 6 months but regularly kept charged. The one point I suspect is that the engine immobilisation is playing up. My CDTi tourer occasionally refuses to start - turns over okay - so I then operate the arm disarm sequence and it then starts! They do play up sometimes. Cannot offer any other suggestion other than Jules has suggested - getting the AA out?

Jules · 30th April 2017, 09:46

The AA might just have heard the fuel pump running and assumed all ok.
Without measuring the pressure you cannot assume this.

If it was below 220kpa it would have difficulty starting.
LP Pressure should be at least 350 kpa for 2 pump system and over 400kpa on later single pump.

29th April 2017, 13:38	#41
The Garageman The traditionalist Rover 75 Conn SE Tourer Join Date: Oct 2009 Location: The dark and mystical depths of East Yorkshire! Posts: 39 Thanks: 0 Thanked 0 Times in 0 Posts	CDTi Non Starting problem Sorry to hear you have that problem. My friend has still not got to the bottom of it. He has checked all the points that Jules recommends. I did suggest swapping the camshaft sensor with a known working item and that made no difference. His car has been laid up for 6 months but regularly kept charged. The one point I suspect is that the engine immobilisation is playing up. My CDTi tourer occasionally refuses to start - turns over okay - so I then operate the arm disarm sequence and it then starts! They do play up sometimes. Cannot offer any other suggestion other than Jules has suggested - getting the AA out?

30th April 2017, 09:46	#42
Jules This is my second home ZT 260 SE Twilight and 10 other 75 ZT's :O Join Date: Jan 2007 Location: Conwy NORTH WALES Posts: 11,094 Thanks: 512 Thanked 1,116 Times in 763 Posts	The AA might just have heard the fuel pump running and assumed all ok. Without measuring the pressure you cannot assume this. If it was below 220kpa it would have difficulty starting. LP Pressure should be at least 350 kpa for 2 pump system and over 400kpa on later single pump. __________________ [SIGPIC][/SIGPIC] Newbies do now!! 1. Plenum drains..all 3 or 4 year dependent 2. Cooling fan..All speeds functioning 3. Bonnet cable divider block