what should the a/f be at idle

[Emperor_Tha]

what should the a/f ratio be at idle? my is running very rich and it just stay there. i dont have a wide band so im not exactly sure how rich....maybe 10...or so...well its almost off the chart.

this is a blk s13 with 300zx fuel filter, 255 fuel pump, fmic, stock injector and turbo

is any one using a megan racing fpr......im not should how exactly to mount it since its liquid fill, should its be horizontally line up?what is the fuel pressure be set at for stock s13 blktop.....36 psi while the hose is connected, 43psi when its not?
Modified by Emperor_Tha at 5:40 PM 7/12/2007

[Emperor_Tha]

bump

[surfer240sx]

bump... would also like to know

[Jesse SR20]

14.7:1

That's the optimal ratio for combustion. You can safely run leaner at idle, like 15-16:1.

[doridori23]

The fuel pressures you gave are good numbers and 14.7 is considered ideal or stoich. Things to check are your TPS voltage, MAF wiring, pull plugs and inspect to see if on3e is worse than all others. Start there and let us know. There are a lot of fuel threads going on but they tend to vere off-course so just post your results

[Emperor_Tha]

what sould the votage on the tps be?

[doridori23]

Roughly .5 shut and 5v wide open. Check this with the key on but not running to avoid doing something silly. Just do a search for TPS and you'll get a few dozen hits if you have any issues. Let us know if that doesn't solve the problem