Focus 1.8 Diesel 2002. Glow plug operation FIXED

[leemack]

When water freezes and the ice expands does this then mean when it melts more water will be in the cooling system.  If so is this also what cases the problem as it has to be released somewhere and if expansion tank is still fitted what will happen.

I've never seen a frozen engine in my time of being a mechanic so it will be interesting on the Transit we have in.

[Shuggy]

i have succesfully defrosted the old 2.5 transits theyre more or less bulletproof
not so much as a core plug popped on that one
just stared it with the fan belt off and let it run in small timed runs then added antifreeze ?
it was an ice cream van so had lots to eat while doing it too
but the bottles of pop had frozen and broken too so nothing to drink and to cold to have a ice pole 

[Digital Auto's]

As dave has said, ice only expands as it freezes, so bursting copper pipes. The dangerous time is when it melts, as in copper pipes, where it will then flood..

[TopGun]

as water cannot be compressed something has to give but as ive said i await correction

Probably for our practical purposes but not strictly true. 

Water is almost incompressible, however it can be compressed. The pressures involved are of the magnitude of 1000 kg per square centimeter (which  strictly speaking is not a pressure, but is listed that way in the Smithsonian Physical Tables) the rate of compression is around 2.5% at 50 degrees C.


The water at the bottom of the deep oceans for instance is compressed by the weight of the water above, and is therefore more dense than the water at the surface.

A consequence of compressing any fluid is an increase in viscosity, this is because the atoms are forced closer together, and therefore cannot move in relation to one another as easily as when the fluid is at normal atmospheric pressure.

[Digital Auto's]

Bit like a pint of Guiness.....

[sb126]

I can remeber the V4 Mk1 transits and the first core plug to pop out of them was allways the one behind the

flywheel

[Dave Hill]

Funny you mention Transits....

I think this was bought up before, that the old 2.5 Di Transit would start up in very cold conditions no problem with no pre heat system. I also remember the Maestro 2.0 ltr Diesel & the Sherpa 200 Diesel (Perkins Engine). The one thing they all had in common, was a mighty starter & cranking speed. I can't remember if the Perkins lump had glow plugs, but I don't remember ever changing any.

Just a thought.

Cheers

[laldog]

The Perkins if i remember did have glow plugs. The worst job i can remember doing on them was adjusting the tappet setting!!

[Radnorman]

I also remember the Maestro 2.0 ltr Diesel & the Sherpa 200 Diesel (Perkins Engine). .....................I can't remember if the Perkins lump had glow plugs, but I don't remember ever changing any.

We fitted some to Maestro Van ( C reg) a few weeks ago!

[sb126]

I had a  early Mk2 with a perkins diesel.

With 2 glow plugs not working it would not start without easystart.