running lean

[bangers]

my n/a vl is running lean at full throttle, is there anyway to fix it?

[jetspin_vn]

You know this how? There is a screw on the AFM that with careful tweaking (also involving some messing with the PCV valve) can be used to adjust the mixture, but what makes you think it's lean? Detonation perhaps? (Pinking noise) try resetting your timing to 15 degrees BTDC first dude.

[Boonz]

is it surging at full revs or sumthing??

[bangers]

i got it dyno'd. if i tweak AFM it will run rich over the entire rev range. i need to adjust it at full throttle somehow.

[muffman001]

hi there my vl surgers on full throttall what would that be ? and has very bad misses i change the spark plugs and thay fowl up in 30 min >?
i also put new leads on it too the car starts and runs sounds like a tractor and thats not good what could it be ? any help would be appreciated

[Bax]

Surging at high revs.. Fouling plugs.. Obviously running rich.. Why I'm not sure.
Whats your timing at?

[detox_nath83]

I had this same problem a while back...
i found out the hard way that it was my AFM was on its way out...
got it replaced with a new one about $200 i think in a service..bloody expensive but now runs like a dream
........just a thought

[stock_vl]

im thinking im gunna buy a new afm just for the sake of it!!
my exhaust tip always seems to be black!!

like she smokes worse then my old man (smoked rollies since 13) thats damn terrible!!

this more then likely what it is?

[harry3]

its normal for the exhaust pipe to be black inside on unleaded
does anyone know if the exhaust can be read to show whether its running rich or lean?

BTW, on LRP the exhaust should be a dark mottled grey

[Bax]

LRP - In a vl?

[Bucket]

i run mine on metho Bex, if i run out, distilled water.

[bangers]

its normal for the exhaust pipe to be black inside on unleaded
does anyone know if the exhaust can be read to show whether its running rich or lean?

BTW, on LRP the exhaust should be a dark mottled grey

Go down to a dyno shop. they stick a sensor up the pipe and test it at different rev ranges. its how i found out mine is running lean at full throttle.

[Bucket]

lean as opposed to other normal VL's they have run on the Dyno stock or... If they told you it was running lean, did they have some explanation to back it up? Can you tell us what the reading was at all. I haven't Dyno'd my crapper so i dont know what it would be.

Was it constant every time they ran it, maybe injectors dont flow full range due to blockage... maybe fuel pump not working to best it can but was this an issue that made you take it to them, did you notice a lack of power at warp acceleration?

[bangers]

they said it MIGHT be the AFM. they didn't want to adjust the AFM as it would then run rich the rest of the rev range. the fuel flow is good. i wonder if its cos i took both mesh out of AFM? no idea!

[holdensupporter2005]

Test your AFM

1. Grab a multimeter.
2. set it to ohms Ω
3. unplug the cable that goes to your AFM
4. hold the multimeter probes on pin 1 and 6 of AFM
5. turn the adjusting screw on your AFM until you get a reading of 382 ohm (this is factory default setting).
6. plug your AFM back in.

[mag]

Sounds like AMF dude...