Discovery 300 tdi Head Gasket

Thomo1927 · Mar 16, 2015

Looks like my head gasket has gone

Coming home from work and the heating was cold then the temperature went right up before I pulled over. Opened the expansion tank and it was bubbling right up.

By the time I got home 20 mins later the heaters were blowing warm air ,What head gasket shall I get ? Was there an upgrade or anything different, hoping to crack on this weekend. Cheers

chaz88 · Mar 16, 2015

Get the thickest one you can 3 hole I believe

Thomo1927 · Mar 16, 2015

chaz88 said:
Get the thickest one you can 3 hole I believe

Cheers chaz

Thomo1927 · Mar 16, 2015

Forgot to add that when I opened the bonnet there was steam coming from the top of the radiator ,Any ideas why ? Cheers

markSX · Mar 16, 2015

Thomo1927 said:
Forgot to add that when I opened the bonnet there was steam coming from the top of the radiator ,Any ideas why ? Cheers

Maybe that the rad has gone causing the engine to overheat.

White_Disco · Mar 16, 2015

Don't immediately assume the worst! Check for busted rad, leaking hose clips or a split hose, symptoms may just be from water loss

Thomo1927 · Mar 17, 2015

Thanks for all the advice , There's still coolant in the expansion tank so would you use it for a short distance ? I need my disco till I can sort out whatever the problem is.

chrisstdt · Mar 17, 2015

Depends if you want to do more damage ? If your going to fix it then check for coolant leaks ,if the rad or a pipe is leaking then that will need replaced wheather it needs a hg or not

Thomo1927 · Mar 17, 2015

Just been out to check the water level etc ,Put a bit of antifreeze in .When I checked the bolts on the head they were all loose ? Could this have something to do with it and do they need to be torqued tight. Cheers

chrisstdt · Mar 17, 2015

Might explain it ! if the main head bolts are slack and the gasket has been leaking you will be very lucky if re torqueing them solves your problem but gota be worth a try

davidsmith1307 · Mar 17, 2015

Can you get away with re-torquing head bolts once they have been stretched? I suspect not.

chrisstdt · Mar 17, 2015

I suspect the gasket wont seal second time round either

chaz88 · Mar 17, 2015

Whip it of and replace
It's a simple job if your handy with a set of spanners

Thomo1927 · Mar 17, 2015

Thanks for all the advice , new head gasket going on this weekend. Cheers

trax · Mar 17, 2015

davidsmith1307 said:
Can you get away with re-torquing head bolts once they have been stretched? I suspect not.

yes, just check they are within the specific length.

SpiritMR · Mar 18, 2015

Got a full engine you can have if you come remove it.

New head,
Injectors,
Head gasket,
Core plugs,
Timing belt,
Serpentine belt,
Water pump,
Full service 6k ago,

Over 4months it had 2.5k spent on it. All done by famous 4 Louth. Free to a good home.
Otherwise it will be going to the scrap man on friday.

Really don't want it too.

chaz88 · Mar 18, 2015

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Discovery 300 tdi Head Gasket

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