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Thread: 1hz wont rev heaps of smoke

  1. #1
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    Unhappy 1hz wont rev heaps of smoke

    Hi just wondering if any one can help me out i bought a 2003 cruiser ute with a 1HZ non turbo and the motor just will not rev past 2,000rpm i have been making bio diesel for about 4 years and it ran fine in my 2.4 litre hilux and then i had a hjz75 2h diesel and it ran fine it that as well but in this one it just will not work when i drained the tank and refilled with diesel it ran fine again i have treid filters blowing the fuel line back and also had the ip checked and was informed it is ok. Does any one know what might be going on ?????

  2. #2
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    Mar 2008
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    Melbourne
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    Re: 1hz wont rev heaps of smoke

    I'm no expert but it sounds like an injector issue to me. Bio is more viscous than dino and if your injectors are worn it could make a difference. Have them serviced and/or replaced and see how you go.

  3. #3
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    Re: 1hz wont rev heaps of smoke

    Hi i dont know if it would be the injectors as my cruiser only has 104,000km its a HZJ79 Series 2003 and it runs fine on diesel only when i try and run it on the bio this problem happens,and yet on both of my other 4wds ran fine on bio. yet this 1HZ will run up to 2000rpm some times if i am lucky and stop there and blowing blue white smoke like a mozzie killer some times it will not even make to 2000rpm but idle is fine. is the 1HZ engine diffrent in any way to the older diesel engines besides the pollution stuff that is fitted, that could cause it not to run on Bio,

  4. #4
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    Sep 2005
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    Re: 1hz wont rev heaps of smoke

    Injectors for sure and possibly timing could be needing attention.

    Regards,
    Tony
    Life is a journey, with problems to solve, lessons to learn, but most of all, experiences to enjoy.

    Current Vehicles in stable:
    '06 Musso Sports Crew Cab. Running on used cooking oil with 5% to 10% misfuel.
    '2014 Toyota Prius (on ULP)


    Previous Vehicles:
    '90 Mazda Capella. (2000 - 2003) My first Fatmobile. Converted to fun on veggie oil with a 2 tank setup. Died when supercharger stuck at max boost for weeks. Stretched head bolts.
    '80 Mercedes 300D. 2 tank conversion [Sold]
    '84 Mercedes 300D. 1 tank, no conversion. Replaced engine with rebuilt OM617A turbodiesel engine. Finally had good power. Donor for current Fatmobile coupe. (body parted out and carcass sold for scrap.)
    '99 Mercedes W202 C250 Turbodiesel (my darling Wife's car)[sold]
    '98 Mercedes W202 C250 Turbodiesel (my car)[sold]
    Parts Car C220 1993 SOLD.
    '85 Mercedes Benz W123 300CD Turbodiesel single tank using 95% used cooking oil and 5% to 10% misfuel (where someone had filled diesel vehicle with petrol).


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  5. #5
    Join Date
    Dec 2005
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    Perth Western Australia
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    Re: 1hz wont rev heaps of smoke

    Quote Originally Posted by gibbo135 View Post
    i drained the tank and refilled with diesel it ran fine again

    i have treid filters

    blowing the fuel line back and

    also had the ip checked and was informed it is ok.

    Did the shop that checked the IP and inform you it was okay give any opinion on the broader problem?

    If the fuel filters are the same for both fuels - ie you don't have two tanks with separate fuel supplies - and you have changed the fuel filter, then that eliminates that problem.

    I know you've blown the fuel line back, but an option to dismiss the fuel lines/or tank is to run the engine from a jerry can plumbed into the fuel filter under the bonnet. The return supply will still go back to the tank so you will use more diesel than you might think, but at least you will be able to isolate the problem. Could be that you have an air leak in the fuel lines that is sucking in air on bioD and not on Diesel and running it from a jerry can as a test will eliminate that.

    Did you know that LC's have a fine gauze filter on the pick up inside the tank. Removing the pickup and float from the tank will allow you to check it. Blowing back should have cleared it, but you never know until you visually check.

    White/Blue smoke indicates overfuelling doesn't it?? What else is there left if the IP is okay?? Must be injectors. There's also a gauze filter on the inside of the IP that veggie users find gets clogged with gunk, but biod shouldn't have that problem and when this blocks the engine just has no power, not heaps of white smoke as there is not enough fuel to run the engine, let alone burn off as white smoke.

    Tim
    Toyota Landcruiser 1988 HJ61 Manual Wagon
    12H-T turbo Direct Injection.
    Twin Tank setup runs on 100% WVO after warm up. 30 plate FPHE with 80C output, 12mm fuel lines
    Start up and shut down electric fuel pump feeds IP direct.
    Front 4WDSytstems Lokka, Rear ARB airlokka for quick escapes up sandhills. Performance GTurbo with 600mm FMIC gives 450nm @ 1700rpm at 20psi boost.

  6. #6
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    Re: 1hz wont rev heaps of smoke

    Hi Tim yes the shop advised me to drain the bio and put back diesel and then see what happens as they did check the ip gauze filter and some other things aswell and informed me it was fine. If there is a air leak in the line some where should'nt it happen on diesel aswell. And with the smoke it seems as if the engine is starving for fuel. One thing i did try is i held the revs at around 1500 to 2000rpm where it breaks down and the smoke pours at the rear i started to pump the primer pump and the revs increased and the smoke cleared, But when i stopped pumping the primer pump it returned back to what it was doing.


    Wayne

  7. #7
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    Apr 2007
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    Re: 1hz wont rev heaps of smoke

    It does sond like its starving for fuel, bio can be a little thicker than dino diesel I think from memory that cruzers have a pre filter on the end of the fuel pick up inside the tank. I would have a close look at it and remove it. If there is no pre filter remove he elbow from the intake side of the fuel filter they often have crap in there. also filters, and air leaks, I have a toyota lucna than ran fine on diesel but gutless on bio, it was the fuel filter. I would also make sure you havent got a bad batch of bio with unreacted oil in it. it will be too thick to go through the fuel filter without heat.
    goodluck with it

  8. #8
    Join Date
    Jul 2006
    Location
    sydney
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    261

    Re: 1hz wont rev heaps of smoke

    Gday
    Try the jerry can trick with a clear hose bypassing the primer pump and filter assembly reason being my mate had a similar problem with the primer pump blocked with a plastic shaving from the the dual tank solenoid.
    It sounds like a fuel starvation issue.
    thanks caveman
    Last edited by Captain_caveman; 15th October 2010 at 09:15 PM. Reason: spelling
    2002 100 series 100,000 on B100

  9. #9
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    Mar 2008
    Location
    Melbourne
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    Re: 1hz wont rev heaps of smoke

    Here's what I think's happening:

    For some reason your IP isn't generating enough pressure for your injectors to atomise the bio (due to the greater viscosity) - so you get a lot of big drops that don't ignite properly and produce lots of white smoke.

    When you add pressure with the primer you create greater pressure at the injectors and therefore better atomisation and more efficient combustion.

    Dunno why this happens - most 1HZs are able to atomise the fuel OK, but it seems that you have two choices - change your injectors or add a permanent source of higher pressure upstream - like most of us with 1HZs have done, and fit a lift pump. The bloke at vegiecars sells a good unit for about $145 last time I bought one.

  10. #10
    Join Date
    Oct 2010
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    cairns
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    5

    Re: 1hz wont rev heaps of smoke

    Hi mark do you have a picture of a lift pump so i know what to buy and where i might get one (auto shops) cause i think that is what the problem is,
    Thanks wayne

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