306 turbo diesel don't like starting when hot

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sparky28 - 17 May 2006 21:27 GMT

Can anyone advise why my 96, 306 xldt starts great from cold, runs
great, had new filters,plugs & battery, but when engine is hot,
struggles to re-start.

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Brian - 18 May 2006 18:07 GMT

> Can anyone advise why my 96, 306 xldt starts great from cold, runs
> great, had new filters,plugs & battery, but when engine is hot,
> struggles to re-start.

Check the valve clearances. Chances are that some are too tight, resulting
in the valve being held open slightly when hot, thus removing the
compression required.

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Chris - 19 May 2006 18:23 GMT

> > Can anyone advise why my 96, 306 xldt starts great from cold, runs
> > great, had new filters,plugs & battery, but when engine is hot,
[quoted text clipped - 3 lines]
> resulting in the valve being held open slightly when hot, thus
> removing the compression required.

Like Brian says, also check your fuel pump is holding fuel and not
letting it back to the tank.

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sparky28 - 20 May 2006 07:10 GMT

Thanks Chris
Yes I guess the pump is not holding pressure as the
manual hand pump goes soft, when engine is off. Does this mean I need a
new fuel pump ?
Thanks again Martin.

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Phil Cook - 20 May 2006 12:56 GMT

>Thanks Chris
> Yes I guess the pump is not holding pressure as the
>manual hand pump goes soft, when engine is off. Does this mean I need a
>new fuel pump ?

Could be just a leaky line somewhere, but then you would think it
would be awkward starting from cold.

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ccMikeF - 20 May 2006 15:50 GMT

My 406 had a similar problem. A real pig when hot and left standing for a
few minutes. The fuel return line was not tightened up and I guess it was
pulling air in as the engine cooled. I only found it because it came right
off - (motorway driving and "where's that smell of diesel coming from!")
Tightened the clip and never a problem since.
..Mike

>>Thanks Chris
>> Yes I guess the pump is not holding pressure as the
[quoted text clipped - 3 lines]
> Could be just a leaky line somewhere, but then you would think it
> would be awkward starting from cold.

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Chris - 20 May 2006 14:45 GMT

> Thanks Chris
> Yes I guess the pump is not holding pressure as
> the manual hand pump goes soft, when engine is off. Does this mean I
> need a new fuel pump ?
> Thanks again Martin.

Yes try and fit a new pump.
from chris Addlestone Surrey

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