well, after pondering on why my car was lean on the dyno @ 10psi with a walbro fuel pump and a FMIC, i realized that i have never changed my fuel filter since i have owned the car... and judging by the previous owner who i knew personally, i dont think the fuel filter has been changed in a looong long time... so i'll be changing it tomorrow.

could this be robbing me of precious fuel pressure? i think this could be why my car was/is running lean... what other problems could this cause?

 

Usually when the fuel filter gets too clogged, it deforms and just bleeds through (kinda like a HKS foam air filter) allowing dirt into the engine and to clog the injectors.

 

interesting. so lets say the injectors are NEW (hypothetical) and the fuel filter is "clogged". could that cause a lean condition?

 

It would need to be really really clogged.

Hows your PD???

 

um i dunno. can i just remove that damn thing?

i'm installing my e6k tomorrow so i'm going to watch my injector duty cycles while datalogging a wideband and see if they are really the problem (cause i think it has something to do with fuel pressure)

 

this is wjhat i found with a replacement i put in and opened up

 

man wtf, why even use a fuel filter if its gonna do that?

 

sry for sorta jackin the thread, but where is the cheapest place to get a fuel filter? autozone wants like 34-40 bucks and even the guy at the counter said it was a lot.

 

atkins has the filter for around 20 bucks I believe. I recently changed my filter. I wasn't expecting to notice any difference in anything, but the engine seemed smoother in the higehr revs.

 

Man, where did you buy that from, thats a POS..