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| WiggyMK2 |
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G'day everyone,
My EF 6 with an AU motor developed a bad miss yesterday while driving around the block. It felt exactily the same as when a lead fell off a plug. It idles ok but misses badly when revving. Me and my mate (hes an apprentice mechanic) have changed the plugs, leads, coilpack to no avail. The motor is getting spark (have cranked it and seen the spark from all plugs) but its still running like crap. Have also taken the rocker cover off and looked for valvetrain damage (which was a long shot as i dont thrash my car) and still nothing. also have cranlked the car with no plugs and there is no water in the cylinders. Does anyone have any further ideas on what could be causing this? I am angry because i have had the engine in for less than 2 months and done 1000 kms since fitted. The motor has only done 105 000kms. cheers in advance |
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| alfy |
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what model AU motor is it? if its a later one (AU 2 or 3) just hope its not the auxillary shaft driving the dizzy. if thats gone, you might as well go and get another motor.
_________________ 2021 V6 Manual Amarok - 245kw/750nm - many goodies |
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| WiggyMK2 |
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Its an Au series one motor. I didnt think AU motors ran dizzys?
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| alfy |
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only AU series one motors ran dizzys (i think
 ). try replacing MAP sensor and cleaning ISC and throttle body.
_________________ 2021 V6 Manual Amarok - 245kw/750nm - many goodies |
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| WiggyMK2 |
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nah it was coil pack from the beginning mate, no dizzy. We have tried just about everything we can think of.
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| alfy |
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WiggyMK2 wrote: nah it was coil pack from the beginning mate, no dizzy. We have tried just about everything we can think of.
hahaha sorry my bad, i just read what i wrote in the last post, i meant to say only AU1 motors had coilpacks lol
_________________ 2021 V6 Manual Amarok - 245kw/750nm - many goodies |
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| GeZza200 |
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bad fuel? injectors could be blocked. vacume leak maybe.
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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| Disco Frank |
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alfy wrote: WiggyMK2 wrote: nah it was coil pack from the beginning mate, no dizzy. We have tried just about everything we can think of. hahaha sorry my bad, i just read what i wrote in the last post, i meant to say only AU1 motors had coilpacks lol err au2 and 3 had them as well along with ef's!
_________________ RIP SCOTT |
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| foggy |
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Change the fuel filter and as said above look for vacum leaks.
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| ea_falcon |
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could it be the ecu?
im just guessing but maybe the au runs a different coil pack then the ef and the ef ecu cant manage teh new one or something
_________________ 02 series 3 AU marline ute 5speed 347 stroker |
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| cawer |
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if its running crap only when your driving... could it not just be your timing thats out...?
edit: actually if it feels as if it misses, then.. no this wouldn't be the case.. ~
_________________ Cheers,
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| Johnson stroker |
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can't adjust timing on coil packs, well not easily, and not from stock,
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| alfy |
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Disco Frank wrote: alfy wrote: WiggyMK2 wrote: nah it was coil pack from the beginning mate, no dizzy. We have tried just about everything we can think of. hahaha sorry my bad, i just read what i wrote in the last post, i meant to say only AU1 motors had coilpacks lol err au2 and 3 had them as well along with ef's! eeh i didnt know that lol. i try to stay away from AU's  not that i dont like working on them, its just as soon as i look at one, my retinas explode!
_________________ 2021 V6 Manual Amarok - 245kw/750nm - many goodies |
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| stalker |
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turned out it was an injector, was talking to the guy that fixed it :p
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| GeZza200 |
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ok good, might have check mine aswell as mine has a bit of a flat spot at 2000rpm and seems a bit slower up the rev range than usual
_________________ EL Futura: CVE head, Wolf V500, ICE Ignition and Coil, 36lb injectors, Walbro 255lb, Paci comps, 3" exhaust, T5, Harrop Truetrac with 3.9s. Now with 198.9rwkw, (~185rwkw and 13.80 @99.1mph) with more power to come |
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