Hi All
On my 1985 300td, my glow plug light stays on for 2 or 3 seconds and then goes out.

If I start it as soon as the light goes out - it starts right away (2 or 3 revolutions) but has a miss for a couple seconds before running smoothly.

But if I count 10 before starting - it starts right away and runs smooth right away.

Is there a problem here?

Thanks,
Joseph