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Thread: 1992 tb42E TI patrol Fuel Problems 170k's to 75 Litres of fuel needs help

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    1992 tb42E TI patrol Fuel Problems 170k's to 75 Litres of fuel needs help

    Hi, I'm not a hoon, it hasn't got any load in it, cruises down highway about 95 k's an hour, smokes bluey white on petrol doesn't smoke on lpg, gets 290 k's to a 80litre tank of lpg and 170k's to a 75 litre tank of petrol. I've changed airflow meter and it runs great if it's on fuel at idle, only takes five minutes and it starts smogging up the joint with smoke. I need help, what do I look at changing next ??
    Last edited by YNOT; 26th July 2013 at 08:23 PM.

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    Rotaredom NissanGQ4.2's Avatar
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    Hi mate, You might want to head over to the introduction section and tell us a bit about yourself and ur rig, you may find more members willing to help out if they see you have posted up an intro

    Sorry I can help with your problem but I'm sure someone will be along shortly to help you out

    Cheers

    Toddie
    Time is never wasted when your wasted all the time



    WARNING: Towballs used for recoveries can, and do kill people and damage property.

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    Administrator AB's Avatar
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    Hey mate, have you checked the oil filler cap for milky residue in case coolant has mixed in?

    Have a read of this thread below too which may help, the OP had similar issues and things to check...

    http://www.nissanpatrol.com.au/forum...lue+smoke+tb42

    Hopefully someone can help you out with the fuel usage, could be a number of things such as valves, carby need reco, etc. They are not the most economical beasts but 170k's to 75 Litres is pretty bad.

  4. The Following User Says Thank You to AB For This Useful Post:

    CmonSnipeMe (30th June 2013)

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    It has brand new head on it and it's not carby as i would have had the kit thru it. No milky residue, it does have a slight miss when runnning on fuel then when driving on gas the miss goes away after a little while and the smoke clears up. It hasn't lost any oil or water. I'm taking it to town next week so hopefully they can tell me what's going on.
    Last edited by YNOT; 26th July 2013 at 08:24 PM.

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    Smart like tractor Ben-e-boy's Avatar
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    I would try to get a hold of a vacuum gauge. They are commonly overlooked but are an excellent diagnostic tool for petrol engines and can give an accurate indication of engine health.
    Here is a chart of what the different readings mean

    VacuumGaugeDiagnosisCraigU.jpeg
    96 GQ coil/Cab
    08 G6eT


  7. The Following 5 Users Say Thank You to Ben-e-boy For This Useful Post:

    AB (30th June 2013), BigRAWesty (26th July 2013), Clunk (30th June 2013), CmonSnipeMe (30th June 2013), MudRunnerTD (26th July 2013)

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    thanks to all that offered advice it was 2 bad injectors ! and stuffed automatic locking hubs now it's back to relatively good economy !

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    MudRunnerTD (26th July 2013), threedogs (1st August 2013)

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    That's made my mind up to keep the manual hubs and stay away from auto hubs.

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    BigRAWesty (26th July 2013)

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