Hi over the colder weather my tdi has been rough on starting.. I have read for fault codes but no codes associated with glowpugs etc. My question do the glowpugs perish before they fail resulting in rough starting?
Haven't heard of perishing, in fact in my experience it's quite rare for Glow plugs to need replaced. Could it need serviced, maybe fuel filter change?
Weak battery??
I always used to remove the plug and test it on a 12v battery, it should quickly glow red hot.
Yeah the newer starters are better, I fitted a new one to each of our 8P's & the startup speed was dramatic, no word of a lie.