200tdi - getting hot

I have a 110 with a 200tdi fitted. From the performance and the black smoke it kicks out under hard acceleration I am assuming it has had the pump played with.

It warms up well and spends about 50 percent of the time sitting on half on the temperature guage. At idle it cools back down to about a quarter.

The concern I have is that under load for prolonged periods (climbing hills) it starts to get hot. I have not had it overheat put it gets close to the red.

She is running without a fan at the moment but as it is getting hot when running at 60 to 70mph I am not sure this is the reason?

Other than that I can try relpacing the radiator (looks old with broken fins) or maybe the water pump is not giving 100 %

Is the 200 tdi known for running hot when working hard or is it just mine?

Any advice or ideas

not sure if they are, but it sounds like you might have lost some backpressure with all that smoke. oil must have been overfilled at some point.
check that the thermostat is connected cause it should be wired in to your fan aswell and would be the reason for the warmth?!
i dont know a great deal about landy's, kinda learning meself!

Black smoke is usually evident of the injection pump being adjusted to provide more fuel to the cylinders as you suspect. Any extra power that you are gaining from the extra fuel will generate more heat, but it wont really be anything noticeable. I'd start with a cooling system service. Remove the thermostat and put it into a pan of boiling hot water (mind the misses doesn't see! ) and check that it opens. It may be that the thermostat is only partially opening, or not opening at all. If this is the case, you will overheat your engine and possibly cause irreparable damage such as a cracked head or block for example.

Whilst the thermostat is out, inspect the thermostat housing. There are (if I remember correctly) a couple of small water channels no larger than 5mm in diametre that water passes through. They can and will block over time if your coolant hasn't been swapped at regular service intervals. Also throughly flush the cooling system through, bypassing the radiator. Best thing to do is have a hose pipe securely fastened to the pipe that enters the water pump and then allow the water to drain out of the thermostat housing at the top. Then, swap it around and allow the water to flow in the opposite direction. Use the same technique to flush your radiator. You must do this until the water runs clear.

If you're confident that the thermostat is in good order ad you've flushed the water jacket and radiator through, put it all back together and fill her up with water. Give it a test run and allow the engine to warm up. If it over heats again, read on, if it doesn't you've solved your problem.

If you do notice the over heating re-occuring, consider cleaning your intercooler. The main purpose of your intercooler is to cool the air that is being compressed into the air intake. Over time, your intercooler will clog up with oily gunk which you should flush out. Disconnect the intercooler and partially fill the intercooler with petrol. Shake it vigorously and then allow it to drain out. Repeat until the petrol runs out clean. Then allow it to dry thoroughly before re-connecting. This should aid engine cooling to an extent and also increase your engine performance.

I'd also suggest that you whip your old viscous fan back onto the pulley to aid the air being drawn through the radiator. Don't forget it's a left hand thread to tighten

If you've still got overheating problems after that, let us know!
-Pos

If its cooling down as far as a quarter then sounds like your thermostat isnt closing properly. Mine started overheating on the motorways and up mountain sides earlier in the year when it got hottest, it turned out the radiator was all blocked up with crap and required replacing, all the cleaing fluids did nothing.

Edit; Pos that is one major effort i havent read it but youve put my post to shame!

Thanks for all this.It is great to see that among all the whacky posts we get on here that some people still take the time to post some very useful information. I will do these things at the weekend and see how she is. Reports to follow

Cheers

Andy

110ACE said:

Thanks for all this.It is great to see that among all the whacky posts we get on here that some people still take the time to post some very useful information.

Click to expand...

Yesss, it depends what time of the month it is

-Pos

doozle engines normally chuck out black smoke when putting the foot down

change yer rad

What Sean says.

110Ace,

Not sure about your black smoke? However my 110 300 TDI recently experienced overheating on long hill climbs, long runs ect. Tried every thing, cleaning, flushing changing stat and coolant all to avoid replacing rad.

When I bit the bullet and changed rad it cured all, and runs like new !

Martyn

Looks like a new radiator then. Will fit a new thermostat at the same time to be on the safe side.

Many thanks

Andy

cheers peeps these are the better threads that im reading at the mo got the heat problem myself and just starting to diagnose whats up, so replaced the thermostat no change then im on to the temp gague then flushing i think is the next would it be adviseable to use a pressure washer to flush or will it knacker the fins in?

Garden hose is enough pressure!
Remove the radiator and flush through the bottom hose to top hose (reverse flush)
Til the water runs clear

Daz

Flushing is a waste of time unless its clogged with oil/mayo from a blown head gasket.The deposits will be too hard.Much better to get a new rad or get it recored.