in Corolla with the 1.8L 7AFE. It has some upgrades,intkae,exhaust,ignition, etc. It seems to run a bit rich with everything. Is there any point to running a fuel pressure regulator?
Fuel pressure regulators used for containing more petrol in fuel rail...Your car is running rich...isn't it?
Have you swapped this engine recently...? Or car was not in use for some period...?
no its not my car.. another car with 7afe, guy has done small mods, and asked the question, so i floated the question here to know if anyone has any particular point i dont know of.,,,cheers
FPR's got nothing to do with the car running rich. He's running open loop. The A series engines post 93 and lean burn varients use the ECU to lenghten pulse width to increase fuelling during a cold start and dont have a cold start injector. Have his O2 sensor checked alongwith intake air temp sensor. The problem is electrical, not mechanical.
I was just asking you if the guy swapped an engine recently and car is doing rich then it will fix automaticlly after 4 to 5 thousand kilometers...If its a stock engine and it just started doing rich suddenly then there are few things causes rich...Like if he increased fuel by any mean or oxygen sensor might not working...you have to ask the whole story from him to sort out this problem...