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06-02-2008, 11:50 PM
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2mny projects 2 lttl time
Join Date: Oct 2007
Location: Bald Hills Qld
Posts: 338
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Tried "the workshop" but was ignored bigtime. Shoulda tried here first
I have an AU3 that I bought damaged. Seemed to idle fine, start easy, but had a flat spot on acceleration In the two weeks I've been driving it daily, the miss has gotten worse. Also, it now takes four or five seconds and a pump to start where before it was instant, with no need for pedal Guy at work blamed dirty injectors, but before I pull em out, thought I'd ask here. I have a complete car that I can go the "swap a part at a time" elimination route with, but where to start, and in what order, considering both 1..likelihood as a cause 2..work involved in swapover injectors?....coil pack?....some of the sensors? Help please.......Keith |
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07-02-2008, 12:17 AM
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lpg = big boom!
Join Date: Oct 2006
Posts: 1,377
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check the leads...
__________________
BF Futura Dedicated E-GAS w/Ghia bling Project: 86 ZL Fairlane, Red, Sunroof, 310,000KM 
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07-02-2008, 07:50 AM
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FF.Com.Au Hardcore
Join Date: Aug 2006
Location: Salamander Bay
Posts: 5,427
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leads coil pack and plugs are a good start
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07-02-2008, 08:20 AM
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2mny projects 2 lttl time
Join Date: Oct 2007
Location: Bald Hills Qld
Posts: 338
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thanks guys I'll start there
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07-02-2008, 08:20 AM
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FF.Com.Au Hardcore
Join Date: Feb 2005
Location: Melb north
Posts: 12,025
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i`d be changing the fuel filter as well just in case.
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07-02-2008, 10:13 AM
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Boost Addict
Join Date: Jan 2005
Location: North Brisbane
Posts: 1,151
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Quote:
spot on buy urself a little spark tester for about 15 bucks, with this you will be able to test the strength of the coils, if u feel fancy remove coilpack and test your primary and secondary circuits for resistance. a coil with less resistance on teh secondary winding can indicate an internal short. also measure the resistance of all spark plug leads with an ohm (multi) meter, if they are all under 15kohm look at spark plugs, is the gap right, correct heat range, is the electrode burnt, are they sutty, etc once all ur ignition components check out fine, check for fuel pressure (both at idle and under load, if fuel pressure drops off you may have a dying fuel pump, check fuel filter on much crap is in it, last but not least fuel pressure regulator, use a pair of pliers to clamp the return line for the fuelrail and do the fuel pressure test again.
__________________
N12 Pulsar - sold Gen1 Liberty Turbo - sold VP Commodore Turbo - sold LN65 Hilux Turbo - sold EL31 Corolla Turbo - sold Ford AU Ute Turbo - sold Ford AU XR8 Sedan - 5.4l V8 Turbo (in the build) Ford BA XR6T Ute - daily driver Ford FG XR6T Sedan - cruiser do you see a general trend? I DO  Can't live with it, can't live without it! |
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07-02-2008, 10:53 AM
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The Origional, The Best
Join Date: Dec 2006
Location: Darwin, NT
Posts: 709
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my moneys on the leads and coil pack
__________________
Current Mods 2.5" Red Back Exhaust | C2R Grill | Brumby Front Bar & Driving Lights | 18" Optic Blacks | Tickford Intake | Blue Momo Shifter Knob & Wheel | BA Scuff Plates with Ford Metal Inserts Future Mods Lowerage on KingSprings Lows | Engine...Period | Sounds System I Use And Recommend F1 Tyres And Wheels On The Gold Coast Proud Supporter of Beat The Heat (NT)
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08-02-2008, 11:33 PM
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2mny projects 2 lttl time
Join Date: Oct 2007
Location: Bald Hills Qld
Posts: 338
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Thanks everyone.....I'll post the results after I find the problem tomorrow;-)
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Help Please_AU Engine Diagnostics
Linear Mode
