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Posting a reply to: Re: 99 Mercury 175 EFI lost power

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hi


You are replying to:
muskymartin67
Posted 8/13/2009 3:58 PM (#394023 - in reply to #393730)
Subject: Re: 99 Mercury 175 EFI lost power





Posts: 795


Location: Delavan, WI
Well I changed the fuel filter and it seemed to help a little bit- it still doesnt have full power, but it went above 2000 RPM- I also did a compression check on each cylinder and they were all 110-120, not sure what the spec is , but as long as they are all very close that seems OK to me- also did a fuel press check and had about 35 psi- I know on cars most EFI pumps put out 50-60 psi so I was wondering if that might be sufficient- also when I did the fuel press check - fuel came out slightly blue so it appears the oil injection is working, and also I do not have smartcraft gauges- so besides the fuel pump the only other thing it could be is an ignition component- is there anything in particular like a crank sensor that seems to be a common failure with these? any help is greatly appreciated!

Edited by muskymartin67 8/13/2009 4:00 PM

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