My Isuzu Bighorn 4JX1 RJM Engine stalled after fitting it with new oil pump. It can crank but is emiting white smoke. What could be the problem? I have tried to check if the fuel pump is not working but the test showed that it is working well.

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wow first post ever posting country ,what a brave person. !!!!
welcome to USA forums ,that have no such car.(truck)
the line up. (wiki list) so its 3.0L 4JX1
stalls and lost power.
The 4JX1 is a 3.0L direct injection diesel engine, turbo, some intercooled, which replaced the 4JG2 in the Isuzu Bighorn/Trooper/Holden Jackaroo. It uses unit injectors and 4 valves per cylinder.

can be caused by many reasons. get it scanned yet. ?
or see FSM book on flash codes from the direct injection fuel
controller? (per this engine option and market)

does turbo have proper boost? (PSI boost or +1 bar boost?)
does it even have a boost gauge.?
there are over 50 causes, of stalls (most inside engine)
but its not getting boost or the injection rates are wrong.
there are basic tests for each covered in the FSM
Factory (oem) service manual, with coverage for this engine.


3.2 L 6VD1 SOHC V6
3.2 L 6VD1 DOHC V6
3.5 L 6VE1 DOHC V6
3.0 L 4JX1 TD I4
3.1 L 4JG2 TD I4

Its a diesel and its running away so do not try to start till you do the following and yes i know i will be amolished for being a cowboy by the other experts but what you do is to make a gasket for the EGR valve from a coca cola can and seal it off if you dont it may run away and blow itself to pieces .If you do this then it run as normal as the older trucks never had these thing fitted and they all run ok in my day ,exactly whats wron i couldnt tell you without my head under the bonnet but do as i say and it run perfectly

hi Steve. May be sensor camshaft/crankshaft I have problems not srart engine 4JX1 Isuzu Bighorn I replaced sensor camshaft [email protected] max russia

the engine oil pumps are in the rear of the engine(trans out) and behind flexplate /flywheel, were any of these 2 engine oil pumps touched if so the flywheel /flexplate has to be timed to crankshaft position, so you might have it in the wrong position, if your talking about the diesel lift pump (injector pump) that also supplies high pressure engine oil to injectors, after replacing this there is a learn procedure for the rail pressure control valve that is on pump. this can only be done by dealer or some one with Tech2 scanner tool.

MAKE SURE THAT WHITE EXHAUST ISNT ANTI FREEZE. CK the spark plugs for fuel and/ or coolant. After cranking for hours damage can occur.

Sounds like the valve seals may be bad and leaking oil into the cylinders when it sits. This would cause a bluish smoke. One thing to help figure out the problem is are you using oil? If so I would explain the problem of smoking to a good trusted mechanic. He would be able to advise on a valve seal job or if you have high milage other options you would have to repair the problem.

if you use the wrong oil viscosity will have trouble starting isuzu
oil switch in them has to have pressure up before she will open solenoid let fuel in
make sure proper oil was fitted

You have no injection pump ,each injector does that job .
You have a faulty rail oil pressure sensor I think ,read my tips to test this sensor .

my isuzu bighorn will not start after changing valve seals and head gasket and after setting timing it still will not start. do you have a solution.