duf2570

so ive changed my spark plugs yesterday,regaped at .28 and now my engine iddle is richer than before.. whan i start the car ive got 15-15 afr and after 45min of cruize or partial wot pull my iddle goes to 12-13 afr at 1000rpm vs 15-16 ..the cruize and wot section are normal ...fuel pressure is good(iddle)...recalibred my innovate sensor and nothing change..no missfire,plugs color is good,still boost 18/18,5 psi..vacuum is good...ill take a look at the Dizzy..or replace my new plugs,,,maybe

twkdCD595

Did you change to a different heat range plug?

duf2570

nop same plug..but you put a doubt in my mind,,i asked the bkr7e but forget to validate when i installed it...iven if they where in my and at the gapping session

i will look to be sure.or look at the fpr so what should be the fuel pressure at iddle(ideal)??

duf2570

what should be the fuel pressure at iddle?????..ive got 51 psi

SiRCiviC94

it can be as low as 35-40psi . just turn it down a bit

duf2570

i read that if i turn down i will be off the tune...when i remove the vacuum line on the fpr ive got 60psi...so i dont want to blow something

SiRCiviC94

should be no big deal

Dark_Teg

Don't mess with fuel pressure if you are tuned. If you turn it down to fix a rich idle your wide open throttle tune will be leaner than before. This isn't a car with a mass air meter, you have to be careful when making global changes to the fuel system.

duf2570

Im agree with you better to be safe than sorry..

So ive done some test totay.new plug and spark plug wire verified my dizzy there was no oil or rust so ive still got the same issue but engine idle fine boost fine wot is at 12-12.2 afr...when i start my engine ive got 14.5-15.5 afr and when the engine is warmup the afr goes to 12-13.5 at iddle weird???? Idle fuel pressure is 51psi...vacuum is 20-22...plugs gapped to .28...i begin to think about idle valve or the tune or a bad wideband sensor!!???