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View Full Version : s13 blacktop spuddering under boost


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?