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26-02-2008, 12:29 PM
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#1 | ||
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AU 1
Join Date: Jan 2007
Location: Metung
Posts: 49
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I have an AU1 on dual fuel. It idles reasonably well on LPG, but very rough on petrol. Actually, it's never idled really smoothly on LPG or petrol, but now it's missing badly on petrol.
The mechanic said he thought it was a coil pack problem, but surely this would affect both LPG and petrol? I put some inject cleaner through and I also run it regularly on petrol, but still missing when idling. Another thing is that it always idles very roughly on both LPG and Petrol when starting up in cold weather. This doesn't come good until I've driven about 15Km...well after the temp gauge shows normal operating termperature. Any ideas? |
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26-02-2008, 12:47 PM
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#2 | ||
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Critical Thinker
Join Date: Jan 2005
Location: Adelaide
Posts: 20,396
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could be filters, plugs, leads.
You need to get it diagnosed.
__________________
"the greatest trick the devil pulled, is convincing the world he doesn't exist" 2022 Mazda CX5 GTSP Turbo 2018 Hyundai Santa Fe Highlander 1967 XR FALCON 500 Cars previously owned: 2021 Subaru Outback Sport 2018 Subaru XV-S 2012 Subaru Forester X 2007 Subaru Liberty GT 2001 AU2 75th Anniversary Futura 2001 Subaru GX wagon 1991 EB XR8 1977 XC Fairmont 1990 EA S Pak 1984 XE S Pak 1982 ZJ Fairlane 1983 XE Fairmont 1989 EA Falcon 1984 Datsun Bluebird Wagon 1975 Honda Civic |
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26-02-2008, 07:13 PM
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#3 | ||
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Boost Addict
Join Date: Jan 2005
Location: North Brisbane
Posts: 1,151
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LPG always masks ignition and idle problems. so if u r to diagnose an ignition and or idle problem, always do it on Petrol.
id start by looking at sprak plugs and see which cylinder is missing, the move along teh leads, etc
__________________
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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27-02-2008, 11:07 PM
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#4 | ||
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Starter Motor
Join Date: Oct 2006
Posts: 3
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hi guys,
just been reading through all the threads regarding idle probs. I too have these idle probs, and recently had my Au ute converted to LPG. (terrible install too!). Whilst Ilde has been erratic prior to gas conversion, it's now amplified the prob (only when running on gas). I've installed new leads, plugs, O2 sensor, fuel filter, Injectors sound good on a stethoscope, cleaned throttle body, IAC valve works fine. haven't tested the coil pack (if they can be tested). I'll just keep following the threads until something pops up. |
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AU1 Rough Idle
Hybrid Mode