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au running rich. 

 

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 Post subject: au running rich.
Posted: Wed Jul 24, 2013 8:06 am 
Parts Gopher
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Age: 27

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Joined: 23rd Sep 2012

Ride: AU II Fairmont 6

Location: Ballarat
VIC, Australia

Replaced fuel pressure reg. Fuel pump. Filter. 02 sensor. Plugs. Leads.

Have a feeling it started happening when I replaced the air filter with k&n. Maybe need a new maf??Can you clean them? Or would it need to be replaced

 

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 Post subject: Re: au running rich.
Posted: Wed Jul 24, 2013 9:11 am 
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Ride: 93EB Fairmont / BA Falcon XR6T

Location: Western Sydney
NSW, Australia

In my personal opinion i think K&Ns are crap. The oiled ones especially and can cause issues with Map sensors etc.
You should see how dirty and oily the throttle bodies were on my cars when i used them. :shock: I find the paper/Pollen air filters are much better and the cars have been happier since. Some may have different opinions.
And on another hand i think most Falcons usually run a bit rich anyway.

 

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2004 BA MKI XR6T in Lightning Strike paint / K&N / XR8 bonnet / BF lights and a few tweaks.

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 Post subject: Re: au running rich.
Posted: Wed Jul 24, 2013 9:17 am 
Parts Gopher
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Age: 27

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Joined: 23rd Sep 2012

Ride: AU II Fairmont 6

Location: Ballarat
VIC, Australia

93EB wrote:
In my personal opinion i think K&Ns are crap. The oiled ones especially and can cause issues with Map sensors etc.
You should see how dirty and oily the throttle bodies were on my cars when i used them. :shock: I find the paper/Pollen air filters are much better and the cars have been happier since. Some may have different opinions.
And on another hand i think most Falcons usually run a bit rich anyway.

Oh no this is ridiculously rich to the point I wash my rear bumper once a week due to excess black smoke. But yes. It is an oily k &n. I also throw a backfire once every now and then when giving it a boot full. (Backfire happens around once a week) any suggestions ?

 

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 Post subject: Re: au running rich.
Posted: Wed Jul 24, 2013 11:47 am 
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Age: 27

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Joined: 23rd Mar 2013

Ride: 1995 ford fairmont

Location: stratford
New Zealand

Have you checked the engine is running up to temp? If the thermostat is stuck open and its running cold then it will run pritty rich, jst had that happen to mine
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 Post subject: Re: au running rich.
Posted: Wed Jul 24, 2013 1:04 pm 
Getting Side Ways
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Ride: 1993 EB XR8

Location: BrisVegas
QLD, Australia

Check for vacuum leaks!

 

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 Post subject: Re: au running rich.
Posted: Wed Jul 24, 2013 6:52 pm 
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Ride: ford falcon au3 xr8

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yes, my au ghia had a high fuel consumption, I found that the intake manifold bolts were loose, after replacing the gasket and fitting a new paper air filter fuel consumption dropped dramatically..

just check and tighten the manifold bolts and maybe try a std air filter...
a over oiled k&n can cause air restriction and poor fuel economy
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 Post subject: Re: au running rich.
Posted: Thu Jul 25, 2013 1:19 pm 
Getting Side Ways
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Ride: EF XR6 Wagon, AU2 XR6 VCT

Power: 148 rwkw

Location: Auckland
New Zealand

+1 over-oiled air filter
+1 vacuum leak. With the engine running, spray all vacuum hoses and all gasket joins between the throttle body and the head with brake cleaner spray; revs will rise when you hit a leak.

Also, could be a failed T-MAP sensor (the sixes use a MAP sensor, rather than a MAF meter) mounted beneath the throttle body.

 

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