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Thread: very rough 4k and key banger like poping

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    Member shaunpierre's Avatar
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    Default very rough 4k and key banger like poping


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    Car model: e70

    Engine type:4kc

    Problem : VERY rough rev up to about 3000rpm pops and back fires,
    VERY very hard to start usualy drains battery and need a jump.

    up untill this point i had random key banger like pops/backfires with massive black clouds of smoke left behind me while driving but engin will keep running,also rough random surges of power like im feathering the throttle, hard to explain.

    now car wont start and when it does its rough as shit, took it for a spin just now and its dog shit no power and its like poping around almost stalling.

    i changed leads, cap, fuel filter, cleaned carby and also service.. all started to happen recent and cars been out of action for a week,
    muzzers dont know bout my kpgc10

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    Senior Member Futo_gt86's Avatar
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    Check everything you changed
    Did you get the leads in the right firing order?
    Did you remove carby to clean it? in and return lines on right way around? Checked gasket?
    No vacuum lines popped off?
    Fuel pump all good? Got pressure?
    Fuel filter flow in right direction?

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    Member shaunpierre's Avatar
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    leads must be in right order coz idles pritty smooth with some throttle
    muzzers dont know bout my kpgc10

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    Member shaunpierre's Avatar
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    OH also changed the spark plugs i might double check them later
    muzzers dont know bout my kpgc10

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    Did you change rotor button as well? If its loose on the shaft in the dizzy, could be your problem. Check your timing too...

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    Member shaunpierre's Avatar
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    nah havnt gona give that a look
    muzzers dont know bout my kpgc10

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    Veteran lolwat's Avatar
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    check your leads, points, general timing

    backfire out the carby??

  • #8
    Member shaunpierre's Avatar
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    na its out the exhaust, ill swap the rest of the leads to my old ones see it makes a diff, coz these newer ones are shit. the tips always come off when u take them out the dizzy cap.

    also old dizzy cap had the spring loaded button thing under the cap that was rooted. new cap its good, possible the problem can be the rotator?
    dont think can be timing... maybe its just my carby settings eg mix and idle.?
    what are some good settings for idle and shit?? like i just bee playing around past couple years till it runs half decent i have no idea whats its at now.

    if i cant solve this little delema its comin off the road and sr conversion comenses luls

    i miss driving the daily thrasher lol
    Last edited by shaunpierre; 20th September 2012 at 10:31 PM. Reason: more info
    muzzers dont know bout my kpgc10

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    Veteran lolwat's Avatar
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    spring thing at the top of the cap transfers spark to the rotor botton from your king lead, when i said check leads i meant make sure you have put them on right(firing order and that there clipped on rite)

    just go SR :L

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    Member shaunpierre's Avatar
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    yea i checked leads properly there all good and in right order, there fine the transfer spark for a good 2cm even when there out of there socket will get into after work this arvo
    muzzers dont know bout my kpgc10

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