L200 overheating and cracked cylinder head

Mitsubishi Pickup
malbec
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Joined: Sat May 05, 2012 7:19 pm
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Vehicle: Mitsubishi L200
Location: Argentine

L200 overheating and cracked cylinder head

Postby malbec » Sat May 05, 2012 7:46 pm

Hello,
My name is Alexis and I´m writting from Argentina, I have a Mitsubishi L200 GLS 4x4 engine 4D56 2.5 TDi and had a problems with a crack in the cylinder head. Now I´ll change the cylinder head and correct the flatness of cylinder block. I hope thar this solution will helpfull!! ..I want to ask if smb. know how to solution this problem with cylinder head and temperature?? Or if these engines are weak and should not be turbocharged?? what advice can you give me??
thanks!

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Strada 92
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Vehicle: Mitsubishi Strada 1992
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Re: L200 overheating and cracked cylinder head

Postby Strada 92 » Sun May 06, 2012 4:35 am

You can start by checking the thermostat or better,replace it,use a 76.5'C. .Secundo,maybe the radiator?And what about the water pump?
If all those things are ok,maybe the clutch fan is not working properly.The fan is a really important factor to keep the temperature cool.
Mitsubishi Strada Ralliart 1992 (sold)
Mitsubishi L400 Spacegear
Mitsubishi I-MiEV 2012

malbec
Posts: 6
Joined: Sat May 05, 2012 7:19 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: Mitsubishi L200
Location: Argentine

Re: L200 overheating and cracked cylinder head

Postby malbec » Sun May 06, 2012 10:11 am

Hello Strada 92!! The termostat is new, for 76.5°C, the readiator is ok, because I´d had not oeverheating problems befor! Anyway I will clean de radiator.. and de water pump I´ll check tomorrow.. but, like I told, the cooling system was Ok, the cylinder head was crack suddenly and bubbles started coming out of the tank.. had a crack between combustion camera and intake valve seat in cylinders 2 and 3.. I bought this vehicle 3 months ago, so maybe the cylinder head, had this cracks before.. I will repair this engine but I would like to be sure that this problem not happen again..
Cheers
Alex

davidwwc
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Re: L200 overheating and cracked cylinder head

Postby davidwwc » Sun May 06, 2012 2:49 pm

Hi Alexis,

Sorry to what happened to you. Even though your radiator is ok.,it may show the temp. in the guage it is find, you need some device to monitor that more accurately. The stock temp. guage is not that reliable. You actually need a prynometer. It measures exhaust temp (EGT ) . Turbo generates lots of heat .Have a search at the forum, there is tons of information on this.

Cheers,
DC

malbec
Posts: 6
Joined: Sat May 05, 2012 7:19 pm
Member's Photo Album: http://www.delica.ca/Photos/
Vehicle: Mitsubishi L200
Location: Argentine

Re: L200 overheating and cracked cylinder head

Postby malbec » Sun May 06, 2012 7:03 pm

Hi DC,

I bought a engine protector called Siselco http://www.siselco.com.ar/files/supervi ... tector.pdf this is a real-time monitor of parameters such as high temp, low temp, low oil pressure, coolant level and low voltage. The temp is measured directly on the cylinder head, and have programmable alarms and cutting engine.. I hope whith this device, don´t have more problems.. Anyway I´m worry about the problems with this engine!!

Cheers,
Alex


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