Mercruiser 228 Fuel Pressure?

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  #1  
Old 08-13-10, 09:11 AM
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Mercruiser 228 Fuel Pressure?

Hello, does anyone know what the fuel pressure should be at the carb on a 228 Mercruiser? 1979 chevy 305 V-8

thanks in advance

Ed
 
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  #2  
Old 08-14-10, 03:36 AM
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One manual says 5.5 psi, another says 6 max. Either way, don't replace the fuel pump with one designed for EFI. The carb can't handle the higher pressure.
 
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Old 08-15-10, 04:17 PM
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thanks for getting back to me,
Rick. My pressure was around 7 lb.
cold, but dropped to 4.5 lb hot.

I thought the 4.5 sounded low.

Ed
 
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Old 08-18-10, 09:33 PM
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4.5 lbs should be fine under load.
 
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