Re: Starting GT JTD on Cold Mornings
I have worked on Diesels for the last 20 years and they will take a little longer to turn over at temperatures approaching -4.
If a glow plug is out starting will be followed by an increase in grey/light blue smoke due to that cylinder relying on compression only without any pre heating of the cylinder this is caused by incomplete combustion.
I have always found many faults are caused by low battery ampage on start up, a drop of 1-2 amps usually results in 3-4 seconds more cranking.
Always limit electrical equipment where possible especially on short journeys where low temps are present, we recently carried out some testing on a healthy 2.4 jtd starting at 7am at -3c, we used heated rear window (also operates wing mirrors) , full fan on the windscreen for a 10 minute journey every day for 5 days, we checked the battery voltage at the end of the week and registered 7.2v from a starting voltage of 12.6.