s13 blacktop spuddering under boost - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

jdmdime · 05-16-2012, 01:44 PM

Ok so a little background, I just purchased this 89 coupe with a blacktop. It was involved in a front end accident but the car is still drivable. I got a aem uego and noticed its running real lean so my next step was to check fuel pressure. Im getting 32lbs with vacuum hooked up. (stock sohc pump) and 34lbs when I pinch the return line. bad fuel pump right? Whats the stock fp on a bone stock blacktop? Thanx in advance.

towlie · 05-16-2012, 01:51 PM

boost leak?

jdmdime · 05-16-2012, 01:53 PM

That was my first guess but wouldnt a boost leak (escape of metered air) cause a rich mixture?

05-16-2012, 01:44 PM	#1
jdmdime Join Date: May 2012 Location: San Fernando Valley Age: 38 Posts: 29 Trader Rating: (1) Feedback Score: 1 reviews	s13 blacktop spuddering under boost Ok so a little background, I just purchased this 89 coupe with a blacktop. It was involved in a front end accident but the car is still drivable. I got a aem uego and noticed its running real lean so my next step was to check fuel pressure. Im getting 32lbs with vacuum hooked up. (stock sohc pump) and 34lbs when I pinch the return line. bad fuel pump right? Whats the stock fp on a bone stock blacktop? Thanx in advance.

05-16-2012, 01:51 PM	#2
towlie Post Whore! Join Date: Jun 2009 Location: Pacific NorthWest Posts: 2,500 Trader Rating: (11) Feedback Score: 11 reviews	boost leak?

05-16-2012, 01:53 PM	#3
jdmdime Join Date: May 2012 Location: San Fernando Valley Age: 38 Posts: 29 Trader Rating: (1) Feedback Score: 1 reviews	That was my first guess but wouldnt a boost leak (escape of metered air) cause a rich mixture?