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help with bad miss 

 

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 Post subject: help with bad miss
Posted: Fri Jan 23, 2009 9:15 am 
Getting Side Ways
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Location: melburn
VIC, Australia

recently i lost all spark in my car, so replaced coil (which turns out didnt need to be done anyway as the orig was fine) and dizzy - although the dizzy and TFI were from a wreckers.

got the car running finally all was well
last night the car started with a slight miss that eventually got worse and worse and worse to the point that i couldnt accelerate past 10kph

so i figured it was a dodgey lead or leads

replaced the leads, dizzy cap and rotor

was running great until this morning

the miss has slowly returned, except now it idles fine and only misses a little (like it did last night) when i accelerate


any ideas?
could it be a dodgey TFI?

its getting spark to all cylinders...
the only thing in the ignition system i havent replaced with a new item is the dizzy/TFI and the spark plugs!!

 

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mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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Posted: Fri Jan 23, 2009 4:35 pm 
Getting Side Ways
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Ride: BF F6 Tornado - #0077

Location: Bendigo
VIC, Australia

aux shaft

 

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Posted: Fri Jan 23, 2009 5:51 pm 
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lol where/what the fk is that

 

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XG Panelvan
mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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Posted: Fri Jan 23, 2009 6:02 pm 
Getting Side Ways
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Location: melburn
VIC, Australia

hm well i looked into what an aux shaft is

hoping its not that lol

this morning when it was running fine, the low coolant light came on, then the car started running with a miss...

this afternoon after work i started the car and it was still running with a miss, then i filled up the water and it ran fine....

strange lol

then when i get home i turn the car off, turn it back on and it was running with a miss again

after looking in the bay there was a water leak right above the throttle body, which may have leaked onto the ignition system, but it didnt seem wet.

so i fixed that up and ill see how it runs later

moral is that it seems the leads werent the problem lol

 

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XG Panelvan
mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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Posted: Fri Jan 23, 2009 7:14 pm 
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Ride: NC II Fairlane

Location: morayfield
QLD, Australia

blown head gasket

you shouldnt be loosing water like that.

i done mine today, cost a total of 68 bucks to do myself (i used the same headbolts coz im a dodgy bastard lol) na the headbolts were fine, the reason mine blew was because the previous owner replaced the gasket and didnt clean the block down and had enough gap for the coolent to make its way into the cyl and blow the gasket

 

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Posted: Fri Jan 23, 2009 7:32 pm 
Getting Side Ways
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Location: melburn
VIC, Australia

the reason behind the water loss was a hose clamp i undid when i was trying to fix the spark the first time around

the head gasket or head is f**k (well i thought so, there water gauge used to fluctuate up and down under acceleration, but its stopped that since changing the dizzy)

and i had thought it might be just getting worse, but would have thought that it would nt cause problems when both hot and cold

alot of things are still pointing to ignition

after going for a drive just now after fixing the leak and letting the ignition dry out (as i thought it might have been a wet TFI module or coil) it seems fine, and the car is still hot, so again dont think its head related

im going to get some maccas now (lol) so ill see how it goes

 

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XG Panelvan
mild engine, EL ECU & J3, HI6 & MSD coil

in the shed - .595" lift cam, GT4202, forged AU engine, ems 4424 ecu, glide & 5500 stall - next-bellhousing

XH ute daily - DOHC BA XR6 engine, T5, AU3 ECU, J3 chip, wideband & logger, ported BBM, 3" intake

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