The Stovebolt Site Forums The Shop Area Engine Shop Fuel Pressure Question

I long ago gave up on mechanical fuel pumps and have had 3 electric pumps since. One failed because the ground connection was corroded -- it tended to flood the carb after shutdown. It's now a spare on the shelf in the garage. Next trip it goes with me under the seat. I replaced it with another from Summit or Rock Auto, which failed about 4 years later on the road, requiring a $200 tow off I-5 near Willows CA. It flooded the carb after shut down too and sometimes at idle when hot. I walked to the O'Rilie's AP in Willows and got a Precision brand pump which states 2.3PSI on the box. Ran fine at full throttle over the Siskiyou Mtns.pulling my camper and feeding two Zenith 228 carbs on a 261. It idles consistently better and doesn't flood after shutdown. Lots of volume, low pressure, that's what you want. I haven't run it in summer to see if that low pressure causes vapor lock but occasionally the previous two pumps suffered that despite heat insulators under the carbs. Make sure you have a filter on the inlet side of the pump. There's no telling what lurks in the fuel tanks after you've filled up as stations with no filter at the pump (a rarity I seldom see).