Do you have a question about the 150 EFI and is the answer not in the manual?
Questions and answers
Nate owens
April 10, 2025
I have a 1998 mercury 150 efi replaced the fuel pump stated up then I put water to it it wanted to die
1 comments:
Mr. Anderson
April 10, 2025
Your 1998 Mercury 150 EFI engine may want to die after replacing the fuel pump due to one or more of the following reasons:
1. Faulty Fuel Pressure Regulator: Even though many assume it doesn't fail, a bad regulator can cause incorrect fuel pressure, leading to poor engine performance or stalling.
2. High-Pressure Fuel Pump Issues: If the high-pressure pump has had water in it or sat dry, it can go bad, even if recently replaced.
3. Electrical Problems: Issues like a melted fuse holder can drop power to the ECU, affecting engine performance or causing it to shut off.
4. Overcharging Voltage: If voltage at wide-open throttle (WOT) is too high, it can cause the ECU to shut off or act erratically.
5. Fuel Quality or Treatment: Contaminated fuel or improper treatment can also affect engine performance.
Each of these should be checked to identify the root cause.
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Do you have a question about the 150 EFI and is the answer not in the manual?
Questions and answers
I have a 1998 mercury 150 efi replaced the fuel pump stated up then I put water to it it wanted to die
Your 1998 Mercury 150 EFI engine may want to die after replacing the fuel pump due to one or more of the following reasons:
1. Faulty Fuel Pressure Regulator: Even though many assume it doesn't fail, a bad regulator can cause incorrect fuel pressure, leading to poor engine performance or stalling.
2. High-Pressure Fuel Pump Issues: If the high-pressure pump has had water in it or sat dry, it can go bad, even if recently replaced.
3. Electrical Problems: Issues like a melted fuse holder can drop power to the ECU, affecting engine performance or causing it to shut off.
4. Overcharging Voltage: If voltage at wide-open throttle (WOT) is too high, it can cause the ECU to shut off or act erratically.
5. Fuel Quality or Treatment: Contaminated fuel or improper treatment can also affect engine performance.
Each of these should be checked to identify the root cause.
This answer is automatically generated