Question about Isuzu Trooper

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There is had start and heating up of the engine number RJM 510253 Engine 4JX1 Chassis: USB 73GW7202143 I am in Zambia and I have tried everything I can but the problem is not going out

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Try a compression check of every cylinder. A blown head gasket could be the result. 1. Remove the coil wire. 2. Remove a spark plug wire and plug. You should do 1 at a time. 3. Install a compression gauge. 4. Have a second person crank the engine until the gauge is at the appropriately rated pressure and write it down. 5. Do this with each cylinder. 6. Compare the readings on each cylinder. Every cylinder should be about the pressure. Of course engines with a lot of miles can normally have a little difference in pressure,but not too much. The one with the lowest reading could have a bad head gasket,resulting in overheating,and hard starting.

Posted on Oct 06, 2010

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Posted on Jan 02, 2017

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If not, dig deeper:

72f3b1a.jpg
J-1-15(not indicated) : Earths glow plug relay to enable glow plug circuit.
ECM : Electronic control module
IS : Idle switch
ECT : Engine coolant temp
OTS : Oil temp sensor
IAT : Intake air temp
FTS : Fuel temp sensor
INJ : Injectors 1 through 4
RPS : Rail pressure sensor
EGR : EGR vacuum pressure
MAP : Inlet manifold pressure
APS : Accellerator position sensor

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