How much fuel pressure does a fuel pump have?
Electric fuel pumps are normally used to supply the higher pressure demanded by the system. The required pressure can be as high as 66 psi with port injection. The pressure on the throttle body injection systems is between 9 and 18 psi.
How much fuel pressure does a manual fuel pump have?
Pressure Problems On modern automobiles, the average fuel pump pressure is over 60 PSI (pounds per square inch). On classic cars with mechanical style fuel pumps, however, the pressure is much lower—between four and six PSI.
What is the normal fuel pressure?
It is between 35 and 65 pounds per square inch (psi) on most vehicles.
What was the fuel pressure on a 1985 Corvette?
Tuned Port Injection (TPI) The new, more-efficient induction fuel delivery raised performance to 230 horsepower with a better torque curve. The stock fuel pressure for 1985 to 1987 C4 engines with TPI was 36 to 39 psi with the fuel pressure regulator vacuum hose connected, and 47 to 48 psi with the vacuum hose disconnected.
Where is the fuel pressure gauge on a corvette?
Fuel pressure can be measured at the Schrader valve on the fuel rail with a fuel pressure gauge. Many of the original stock fuel pressure regulators were not adjustable. If fuel pressure is not within specifications, check the fuel filter, fuel pump and regulator in that order. “1986 Corvette Shop Manual”; General Motors; 1996.
What’s the average fuel pressure for a car?
TBI 1987—93 9—13 † 8—cyl.: 5.0L, 5.7L 1994—96 9—13 † † 13 PSI minimum deadhead MFI @ CFI Pressure @ (PSI) Engine Year 2.2L, 3.4L 1994 – 96 41—47 31—44 47 min. 3.8L 1992 – 95 40—47 30—44 47 min. 4.3L CFI 1992—95 55—61 37—43 61 min. 4.3L Turbo 1991 – 93 38 – 43 25 – 30 65 min. 4.3L, 5.0L, 5.L, 7.4L 1996 – 00 60 – 66 50 – 63 66 min.
Where is the fuel pump located on a corvette?
The fuel pump was located in the tank. The GM specifications for fuel pressure was 9 to 13 psi; however, the recommendation was increased to 14 psi to eliminate occasional stumbling or if the engine wasn’t getting enough fuel at about 4,000 rpm.