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Thread: Bad Fuel?

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    Default Bad Fuel?

    Hi all,

    Just joined the other day, and have developed a small annoying problem. I bought a VS III Ute 3 weeks ago and it has been running like a dream, that is until last week-end when the car developed what I can only describe as a miss.

    From a stand still, the car stammers and misses like a normal 6 cylinder with a wet distributor, but once given a punch on the throttle clears it's throat and opens up nicely, only to go back to stuttering and missing once it returns to idle.

    I went through the electrics, and found a coil pack was playing up, and have replaced that and also replaced the plugs and leads, hoping this would end the miss, no luck.

    I refueled on the Suturday just before the miss started happening and was wondering if I could have picked up a load of dirty fuel, or fuel with water in it.

    Has anyone else had a similar situation or have any suggestions as to what might be causing this problem.

    The Crank Angle sensor is also new (three weeks ago).

    Thanks in advance.

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    Yeah I dunno about you but I notice the same issue with different batches of fuel especially 91
    I now only run 95 (usually caltex) and the car runs much better

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    Have you checked the pluggs and leads with the amount of shit the petrol stations have to go though these days bad fuel would be the last thing I expect

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    yeah check your spark plugs and leads. not uncommon to develop a miss quite quick when they start getting too old

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    Quote Originally Posted by trent d View Post
    Have you checked the pluggs and leads with the amount of shit the petrol stations have to go though these days bad fuel would be the last thing I expect
    Are you trying to say that bad fuel is uncommon? Because it isnt. There is currently a Captiva sitting around with over $10,000 worth of damage due to bad fuel.
    Quote Originally Posted by ari666 View Post
    i have a proper update for ya:

    sabbath is not fire proof.

    Quote Originally Posted by Reaper:
    cowl on your car is like having the most epic boob job ever and then fitting 4 grandma bras over the top
    Quote Originally Posted by Jecs:
    i dont know exactly what that means, but i feel like i should pull my pants down a lil

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    I just saying don't jump to the conclusion of bad fuel straight away I'm not saying it dont happen

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    There is currently a Captiva sitting around with over $10,000 worth of damage due to bad fuel.
    please elaborate lol

    im assuming engine fire cause i cant see a second hand engine being 10 grand

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    Quote Originally Posted by Dr HaxZaw View Post
    There is currently a Captiva sitting around with over $10,000 worth of damage due to bad fuel.
    please elaborate lol

    im assuming engine fire cause i cant see a second hand engine being 10 grand
    Are Captiva's even worth that much now?

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    Quote Originally Posted by Dr HaxZaw View Post
    please elaborate lol

    im assuming engine fire cause i cant see a second hand engine being 10 grand
    Diesel captiva.

    Fuel Pump
    Injectors
    Labour.
    etc.

    Fuel pump assembly on its own is over $4k

    Currently waiting for the owner to try and get money out of the petrol station where they filled up with bad diesel.
    Quote Originally Posted by ari666 View Post
    i have a proper update for ya:

    sabbath is not fire proof.

    Quote Originally Posted by Reaper:
    cowl on your car is like having the most epic boob job ever and then fitting 4 grandma bras over the top
    Quote Originally Posted by Jecs:
    i dont know exactly what that means, but i feel like i should pull my pants down a lil

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    $4k for a fuel pump assembly?? im assuming its made of titanium and carbon fibre

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    Quote Originally Posted by Dr HaxZaw View Post
    yeah check your spark plugs and leads. not uncommon to develop a miss quite quick when they start getting too old
    He said he just putnew plugs and leads in.

    OP, try changing your fuel filter and blow backwards through the old one to see if much crap comes out.
    'Ah well, I suppose it had to come to this.'

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    Hi Thanks for the replies.

    Plugs and leads are newly fitted....I am assuming it is bad fuel after a significant improvement today. I dumped a litre of Metholayted Spirits into the fuel to help soak up any water that may be in the tank and lines, and within 10 minutes the idle had begun to smooth out a little and the car is accelerating better as well.

    I will run some injector cleaner through it with the next tank of fuel and replace the fuel filter as well. By the way...where is the fuel filter on the VS III, being new to the Commodore and having not worked around Holdens for many years, I am not sure where they are now located.

    In relation to using Metho to absorb the water, this is an old Bushies trick, and we have been doing it for years with no ill effect. Metho blends with water, and also with fuel, being as it is around 96% Ethanol it basically turns water into a combustible substance, as it mixes with the fuel and burns off through the engine.

    I have to say I prefer that to the alternative of dumping 60 odd litres of fuel.

    The fuel station where I filled last time has had a significant amount of road work happening around it for the last couple of years and I believe they may have gotten water in their tanks while they were unable to trade because of road closures, quite a few others have been complaining of similar problems from the same servo.

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    Yeah, metho is good. Not sure where the filter is on the utes but it MAY be near the fuel tank. It's there on the VT/X/Y/Z sedans anyway, in the fuel line just after it leaves the tank.
    'Ah well, I suppose it had to come to this.'

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    Quote Originally Posted by VYMAD View Post
    Yeah, metho is good. Not sure where the filter is on the utes but it MAY be near the fuel tank. It's there on the VT/X/Y/Z sedans anyway, in the fuel line just after it leaves the tank.
    Thanks for the heads up, I will begin the search from the tank area where it leaves it's little confined space. The tank cover in the floor of the ute is still in place, I tried lifting it after removing the 15 odd screws by to no avail, it is stuck there good and proper, and I didnt want to damage the cover by using a prybar to try lifting it.
    My luck, it will be in that little tank area, and I will have no alternative but to get it removed...Oh Well.

    I am hoping Holden had the initiative to mount it on the rail similar to the idea Ford had with the EB II (My Other Car...it was my Dad's...I bought it off him just before he died and have become very attached to it, even though I know it has no real value, it is hard to say good-bye to it.)

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    Quote Originally Posted by Dr HaxZaw View Post
    $4k for a fuel pump assembly?? im assuming its made of titanium and carbon fibre
    Yes, approximately $4k for a fuel pump assembly in the new Diesel Captiva's.
    Quote Originally Posted by ari666 View Post
    i have a proper update for ya:

    sabbath is not fire proof.

    Quote Originally Posted by Reaper:
    cowl on your car is like having the most epic boob job ever and then fitting 4 grandma bras over the top
    Quote Originally Posted by Jecs:
    i dont know exactly what that means, but i feel like i should pull my pants down a lil

  16. #16
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    Update...

    I located the Fuel Filter, it is mounted on the Drivers Side Chassis just in fron of the rear axle and in line with the bush in the lower control arm, this is near the rear of the tank and the fuel lines exit the tank to the rear.

    I have run the motho through and taken the car for a few short drives to help run the fuel through a bit. There was still no noticeable change, so I removed the fuel filter (looked to be the original) there was quite a lot of black sediment in the filter and the fuel appeared a little cloudy, this would indicate to me that there is a little water in the tank and by all accounts, the metho has blended with both the fuel and the water to help drag it through the engine, a little rough idling will undoubtedly continue as a result.

    I have added a bottle of injector cleaner to the mix today, that should help to clean out any debris that has made it past the old fuel filter and maybe clogged or begun to clog an injector.

    After adding both the metho and injector cleaner and changing the fuel filter, I took the Ute for another drive, it appeared to have more pick up from a standing start, and seemed to be idling a little better, I will see how it is in the morning from cold and after sitting overnight, as this was when it was most noticeable.

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    Just be careful with dumping too much cleaner etc into the tank as depending on the tank's age it might dislodge crap at the bottom and clog your injectors defeating the purpose. You mention cloudy fuel?
    So wait till this tank is finished, put in proper fuel and then replace that filter

    Besides the metho i would have suggested adding a bit of 98 (it has cleaning additives built in too which is good). I don't trust aftermarket "cleaning" products

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    Out of curiosity what feul have you been running it on?? cause if its the E10 stuff it would explain all the black rubbish in the feul filter

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    Quote Originally Posted by Sabbath' View Post
    Yes, approximately $4k for a fuel pump assembly in the new Diesel Captiva's.
    That sounds like a car a I would love to never own.

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    Quote Originally Posted by shadetreemechanic View Post
    Just be careful with dumping too much cleaner etc into the tank as depending on the tank's age it might dislodge crap at the bottom and clog your injectors defeating the purpose. You mention cloudy fuel?
    So wait till this tank is finished, put in proper fuel and then replace that filter

    Besides the metho i would have suggested adding a bit of 98 (it has cleaning additives built in too which is good). I don't trust aftermarket "cleaning" products
    Car has done 150 000 klm's, I am going to let this tank run through and when down to 1/4 tank refill with fresh Hi-Octane Fuel, I didnt want to go overboard with additives

    Quote Originally Posted by Dr HaxZaw View Post
    Out of curiosity what feul have you been running it on?? cause if its the E10 stuff it would explain all the black rubbish in the feul filter
    I have only had the car 3 weeks so I cant be sure about the fuel prior to that, My first tank was regular unleaded, and the top up the day before xmas was Freedom Fuel's Unleaded, I am not to sure if they are an E10 blend.
    I am however only going to fuel up at newly refurbished fuel stations from here on, and avoid the little stations that have had tanks in the ground for decades.

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    I am however only going to fuel up at newly refurbished fuel stations from here on, and avoid the little stations that have had tanks in the ground for decades.[/QUOTE]

    Good luck with that idea.
    Out my way they just culled a Mobil and rebuilt it as a 7 Eleven, total refurbish, but they did not touch the tanks.

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    Yeah the only time they touch the tanks is when they dig them up... doesnt happen very often cause its quite expensive

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    Quote Originally Posted by rambunctious View Post
    I am however only going to fuel up at newly refurbished fuel stations from here on, and avoid the little stations that have had tanks in the ground for decades.
    Bugger...that theory has been blown out the window

    Good luck with that idea.
    Out my way they just culled a Mobil and rebuilt it as a 7 Eleven, total refurbish, but they did not touch the tanks.[/QUOTE]

    I was under the impression, the tanks were required to be changed every so many years becvause of the potential to leak due to rust and so on

    Quote Originally Posted by Dr HaxZaw View Post
    Yeah the only time they touch the tanks is when they dig them up... doesnt happen very often cause its quite expensive

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    I was under the impression, the tanks were required to be changed every so many years becvause of the potential to leak due to rust and so on

    not as far as im aware... pretty sure they only change them when they leak or the feul is going bad in the tank

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