Rcardinal429

Hi all, this is my first post here. My sc400 has 102,000 miles and is always ran on 91. It runs pretty rich and the fuel tank always has a ton of pressure when I unscrew the cap. Also, sometimes, especially when it's hot out, the car cranks for a bit longer and when it finally starts, it idles too high and has very little power. After a few minutes it starts really idling poorly and jumping around until it finally smooths out and runs perfectly again. I believe this is a fuel pressure regulator issue, but I want your opinions before I spend $130.


(btw the fuel pump was replaced a few 1000 miles ago and it has new spark wires, plugs, and rotors)

t2d2

iTrader: (8)

I went through similar problems on my '94, although not the idle stuff, and eventually found that one of the fuel lines (I think it was the return line) was a very loose connection at the bottom of the tank, which was allowing fuel pressure to drop after shut-off.