1998 Volkswagen Polo glow plugs dont come on when engine heats up

Car: Volkswagen Polo
Year: 1998
Variant: CL diesel
Categories: Running Rough, Starting & Power Loss
Glow plugs come on and engine starts well first thing in the morning or when cold. After a short journey when engine warms up glow plugs do not come on and engine will not start - without 5 or 6 attempts.
I have change diesel filter; glow plugs and pipes to glow plugs but no improvement.
Posted: Jun 2, 2011 (12 years ago)
Glow plugs shouldn't come on , you dont need them when engine warm , only when starting from cold .
Posted Jun 2, 2011 (12 years ago)
I suspected glow plugs dont need to come on when car has warmed up - however, it is still not starting : until I turn the key for the sixth time. Why will it start when cold but not when it is warm ??
Posted Jun 6, 2011 (12 years ago)

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