rad working ok?

THEengineer · Sep 3, 2013

not sure if my radiators blocked or working normally,its a 300tdi,does not overheat but noticed today both sides of it get hot after a run but its cool in the middle its fitted with the thermo viscous fan set up that spins all the time so is this normal?

jamesmartin · Sep 3, 2013

no should be hot all over core ,new one needed soon

THEengineer · Sep 3, 2013

jamesmartin said:
no should be hot all over core ,new one needed soon

ok,cheers james need to sort one out

OxonLandy · Sep 3, 2013

defo all of it shd be hot. has it got lots of external damage (fins missing) and have u cleaned it thro recently?

THEengineer · Sep 3, 2013

OxonLandy said:
defo all of it shd be hot. has it got lots of external damage (fins missing) and have u cleaned it thro recently?

no not tried cleaning it fins seem to be in good condition think its worth flushing out?

OxonLandy · Sep 4, 2013

not too much of a hassle and if loads of gunk comes out then can only be a good thing

dieselmonkey · Sep 4, 2013

Definitely worth giving it a flush and back flush including block and heater matrix. Then put some rad flush in run it for a bit then repeat the flush. May save you a new rad, but if not at least the rest of your cooling system is clean ready for the new one.

Oldseadog · Sep 4, 2013

Take it off, lay it down, fill it with coke and leave it for a couple of hours and then flush it out.

Simples!

BTW, the fan will turn due to the slight friction between it and the shaft.

dieselmonkey · Sep 4, 2013

Oldseadog said:
Take it off, lay it down, fill it with coke and leave it for a couple of hours and then flush it out.

Simples!

BTW, the fan will turn due to the slight friction between it and the shaft.

I've heard of the old coke trick for clearing blocked heater matrix's.

SteNova · Sep 4, 2013

after I had done the headgasket on my nova after it failed and made all the water dirty brown and filled with oil I stuck a dishwasher tablet in it to get it all clean inside

maybe I should have used 4 liters of coke!

dieselmonkey · Sep 4, 2013

I've heard of the dishwasher tablet or adding washing powder to clean the oil out due to cross contamination after a HG failure. In this instance it would be better than coke.

Coke is very acidic so would IMO be better at attacking the possible blockage / sludge in the rad.

I need to give my cooling system another flush. I did it when I got it as it was brown, and has gone brown again after 2 months. Judging by the sludge that came out last time I don't think it has seen much attention ever.

Oldseadog · Sep 4, 2013

Yup!!

rad working ok?

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