The 75 and ZT Owners Club Forums - View Single Post

COLVERT · 29th November 2020, 15:34

Glow plugs fail from the inside out.

The central heating wire burns out. The plug becomes open circuit and will no longer heat up. At this stage the outside can look perfectly sound.

As the old saying goes------The truth will out.---

Exhaust valves can and do run dull red when the engine is running at high revs.

29th November 2020, 15:34	#23
COLVERT This is my second home R75 Saloon. Join Date: Feb 2009 Location: France/or Devon. Posts: 14,003 Thanks: 3,851 Thanked 2,167 Times in 1,816 Posts	Glow plugs fail from the inside out. The central heating wire burns out. The plug becomes open circuit and will no longer heat up. At this stage the outside can look perfectly sound. As the old saying goes------The truth will out.--- Exhaust valves can and do run dull red when the engine is running at high revs. Last edited by COLVERT; 29th November 2020 at 15:36..