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Thread: Nissan Safari 1998 heat up problem

  1. #1
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    Default Nissan Safari 1998 heat up problem

    i recently overhauled my Nissan Safari 4.2 TDI engine, running completed, good condition kabli radiator installed and cleaned several times, thermos valve also installed, full coolant instead of water, A/C trip installed, still the vehicle heats up after running 25-30 mins (local) with A/C and the temp guage comes down after lot of time.
    Mechanics did all efforts and alternatives still not got the real prob.
    Help me guys

    Asad Sethi
    Founder, FRONTIER 4X4 CLUB : Adventure begins where road ends!

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    If you have replaced the radiator then make sure that the top of the filling neck of the radiator is at higher level than the tappet cover.
    Local made coolants available in the market these days produce foaming which give rise to the overheating of the engine. Drain the coolant if it is non genuine, flush and run the plain tap water till it becomes clear. Drive the vehicle couple of days and monitor the temp gauge. If it seems OK replace the coolant with original Toyota engine coolant.
    If the problem persists re-torque the cylinder head bolts in a criss-cross manner to the specified torque. Also pay attention to the clutch system of the radiator fan.
    Regards

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    thanks for .............

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    Quote Originally Posted by shadab_lodhi View Post
    If you have replaced the radiator then make sure that the top of the filling neck of the radiator is at higher level than the tappet cover.
    Local made coolants available in the market these days produce foaming which give rise to the overheating of the engine. Drain the coolant if it is non genuine, flush and run the plain tap water till it becomes clear. Drive the vehicle couple of days and monitor the temp gauge. If it seems OK replace the coolant with original Toyota engine coolant.
    If the problem persists re-torque the cylinder head bolts in a criss-cross manner to the specified torque. Also pay attention to the clutch system of the radiator fan.
    Regards
    many thanks bro, i will chk all these things, for coolant i would say that previously it was pure water but as engine overheats so i replaced with coolant, ya its not genuine one. Will also chk other things
    Founder, FRONTIER 4X4 CLUB : Adventure begins where road ends!

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    Quote Originally Posted by asadsethi View Post
    many thanks bro, i will chk all these things, for coolant i would say that previously it was pure water but as engine overheats so i replaced with coolant, ya its not genuine one. Will also chk other things

    Must get rid of the coolant, get a new rad fan clutch just to eliminate and was the head skimmed when you got the engine overhauled?
    There ain't no mud deep enough and no mountain high enough when you've got a LAND ROVER

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    Quote Originally Posted by Charged View Post
    Must get rid of the coolant, get a new rad fan clutch just to eliminate and was the head skimmed when you got the engine overhauled?
    coolant flushed, new radiator installed, head again opened to see condition of gaskit, everything was fine, now will give try to the vehicle tmro in hot mid day with full dual ac. Ya before engine overhauled, there was lot of smoke in the engine but never overheated
    Founder, FRONTIER 4X4 CLUB : Adventure begins where road ends!

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    when you remove the head bolts from that engine you are supposed to install new ones, you also need a diesel engine coolant like BASF Glysantin G-05 or G-30 to prevent cavitation.

    Please also check the fan clutch for correct operation, it should couple up when the radiator is hot.

    btw - pure coolant has very very poor heat transfer capability. The water mixed in the coolant does the heat transfer while the chemical make up prevents corrossion, raises boiling point, lowers freezing point and keeps it stable.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    still engine is over heating , mechanics done all efforts but still something missing.
    Founder, FRONTIER 4X4 CLUB : Adventure begins where road ends!

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    do a pressure test on the cooling system, you need to make an adapter from a junk radiator cap and a pipe nipple a pressure gauge and some sort of pump.

    Or but a pressure tester.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    water body fault......
    -ALLAH JISEY CHAY BAYSHAB DAITA HAI-

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    waterbody fault
    -ALLAH JISEY CHAY BAYSHAB DAITA HAI-

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    @Xulfiqar BhaiI want to ask that what is the best proportion of Coolant with water in a car drove mainly in the city ?

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    50% conc cut with distilled water only.
    ZRS - Zulfiqar Racing Systems ..... - professionals at work - at crackwheels.com

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    if I'm not wrong your engine is TD42 and water body price is
    2.7k to 3k taiwan made and Japanese is min 7.5k never buy qabli or repaired I have tried just buy Taiwan made I'm using it and build quality is very very good

  15. 06-09-2013, 11:34 PM

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