1997 Mercury 150 EFI Fuel issues

vwilliams

Recruit
Joined
Sep 10, 2013
Messages
1
Just bought the boat. Ran good on 2 outings with less than half full gas tank. Filled up tank and ran for 8 miles, fished, then ran another 3 miles and motor quit. Would not re-start. Had to be towed in. Three hours later, still would not start. Checked spark, good, fuel primer bulb was hard. Turned key and could hear fuel pump running for about 20 seconds. After it stopped, turned off key and disconnected output hose of fuel pump, got a good soaking of fuel on me. The next day went out to try more test. Motor fired right up and ran for about 10 minutes on the baffles, then it just quit. Would not restart. Could this be a bad fuel pump, trash in fuel line or tank, bad A-S vavle. Any help would be appreciated.
 

Fun Times

Moderator
Staff member
Joined
May 16, 2009
Messages
8,804
Re: 1997 Mercury 150 EFI Fuel issues

Hi there, Have you had a chance to check the fuel condition and fuel filter yet as a starting point?
 

1nebel0

Chief Petty Officer
Joined
Nov 28, 2005
Messages
512
Re: 1997 Mercury 150 EFI Fuel issues

Put a fuel pressure gauge on the rail and check pressure...not enough pressure and no fuel from the injectors...
 
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