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Thread Tools | Display Modes |
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#1
18-05-2014, 20:02
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Auto ca18et backfiring, no power... help!
So I bought the clean ass s12 that was advertised recently. Drove it back around 200 miles!
I've not driven an auto s12 before, but this has NO power. When accelerating it refuses to rev up past about 3000 rpm then I have hear a pop from the engine bay, possibly a backfire? I was told the dizzy was not for this engine and is 1 degree out, could that cause this? I got a refurb dizzy with the car, what do I need install it, a timing light? I'll upload a video of what happens later, I thought I'd mention when neutral it does rev up fine and smoothly Last edited by bigdaves12; 19-05-2014 at 10:17. 
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#2
18-05-2014, 21:25
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hi bigdave one clean silvia good price too what are your plans for her . me waiting for my recon brakes to come back this week . cheers ps check dist cap and rotor arm for dirt .
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#3
19-05-2014, 18:07
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Can someone confirm whether im correct or not when it comes to timing...
Set pully to 15 degrees BTDC Align dizzy to 1 tooth out to the alignment mark Retard / advance as needed?  
Last edited by bigdaves12; 19-05-2014 at 18:13.
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#4
19-05-2014, 19:53
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Si took the distributor cap off and compare it to my cap from my old et and its off by miles:
 stuck my old cap on and timed it up at 15 degrees and it fires up nice, replaced the maf too and now to take it for a test drive. Only thing is my uncle blocked the entrance of the garage and i have to wait for him to get back  edit: before i couldn't advance the timing, now it seems ok
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#5
19-05-2014, 23:54
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Aaaand it's still drives like crap, power cutting out when I try to accelerate. Any ideas fellas?
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#6
20-05-2014, 17:43
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So I checked the ecu for codes, both green and red lights were flashing at the same time and giving me random crap so I plugged in the other ecu I got with the car.
Ran it a bit, checked codes and I'm getting 23 for Throttle valve switch, checked continuity according to the manual and all seems fine. I'm going to check the loom and if that's ok I'm going to swap the switch for one from my old et. Wish me luck
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#7
20-05-2014, 18:31
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Scratch that, I was diagnosing the original ecu incorrectly. Plugged it back in, it's giving me code 21 for ignition.
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#8
20-05-2014, 20:00
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Replaced the Power transistor with my old one after cleaning up ground points etc still had code 21. Then started getting code for maf. Removed and tested the maf with the battery and multimeter, all ok. Then tested the loom, all ok.
Installed the ecu from my old et, ran it for a while and now getting code 44. Everything all good!!! HOWEVER still spluttering and backfiring but not as much as before. I'm lost now guys... Can someone confirm timing etc?
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#9
20-05-2014, 21:24
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hi bigdave your timing is right be my book have you check the turbo out lack of power under loan or the trams fluid lever when its running . cheers
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#10
20-05-2014, 21:28
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Update!! It had a random fuel filter on it, replaced it with my old filter and now revs up to red line with no spluttering or backfire when driving!
However acceleration is so bloody slow like misfiring but not 100% on that. More diagnosing to be done. Any suggestions fellas Cheers for checking the timing Tim! Turbo seems fine no smoking etc so I'm just assuming...
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