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Old 03-20-2005, 10:47 AM
blykins blykins is offline
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Default What should fuel pressure be?

I stuck a fuel pressure gauge on my fuel system yesterday....showing 8 psi with a Holley Red electric fuel pump and a Mighty Demon 750. Is that a little high? Should I neck it down a little?

Also, another question......In what increments should you change jets to see a change? When I had my engine on the dyno, we kept jetting it up because a couple cylinders were a little hot....They thought it was running a little lean. We ended up with 88's and 98's on it......Now it turns out it's running a little rich. It was definitely idling rich, so I opened up the idle air bleeds and helped it considerably. It's still a rich running above idle though. How far should I take the jets down before I read the plugs the first time?
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