Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum - View Single Post - Weird sr20det lean out issue at start up and cruising.

s13 drifta · 03-05-2013, 12:56 PM

I am having a lean issue at part throttle as well. I have tried everything besides getting another fuel pump. I have a walbro fuel pump as well. It did fine with 480cc injectors, but once I change to 740cc injectors I started having the issues. I think the Walbro is having a problem keeping up with the flow of the injectors, so I am going to try a Denso Supra pump and see if it solves my lean issue. It is the only thing I have not changed. I have the Walbro hard wired to get more voltage, but didn't change much.

03-05-2013, 12:56 PM	#4
s13 drifta Post Whore! Join Date: Aug 2006 Location: Gardnerville,NV Posts: 2,515 Trader Rating: (105)	I am having a lean issue at part throttle as well. I have tried everything besides getting another fuel pump. I have a walbro fuel pump as well. It did fine with 480cc injectors, but once I change to 740cc injectors I started having the issues. I think the Walbro is having a problem keeping up with the flow of the injectors, so I am going to try a Denso Supra pump and see if it solves my lean issue. It is the only thing I have not changed. I have the Walbro hard wired to get more voltage, but didn't change much. __________________ PM me for s13 or s14 parts!