My diesel won't start in the morning - what's wrong?

My Peugeot 407 2.0 HDi won't start in the mornings. If I roll it down a hill it will start and it starts any time when warm. Any ideas?

Asked on 31 March 2019 by Malcolm Clivery

Answered by Honest John
Failed glowplugs. It's a compression ignition engine which is why rolling downhill starts it and it starts when warm. But needs the glowplugs to glow to start on a level surface from cold.
Similar questions
I have a 2007 Peugeot 207 1.6 HDI, with 83,000 clocked miles. Basically, the longer the car sits unused, the more blue smoke it puts out when it starts and also the harder it is to start (cranks slower...
My Daughter has a new job that involves a 110-mile per day commute, mostly motorway. She'd like an automatic. Economy is important as well as safety and reliability. We have a budget of up to £12,000....
I've just bought a motorhome and I want to tow a small-ish car behind it (in UK). It must also act as a family car (2 adults and sometimes grandchildren). I'm quite tempted by the Ford Fiesta, Ford Focus...
Related models
Good, sharp steering and handling. Excellent 2.2 173PS diesel engine.
 

Ask Honest John

Value my car