1999 mercury 175 efi S# 0g944201

[lifetime1962]

i have been having a problem with low idle and starting, anyone know how to idle up the motor, I am setting at the dock running between 250 and 400 rpm's, help would be appreciated.

thanks, in advance.

[acesover]

It will help you to receive faster, and more accurate responses if you will post your questions in the appropriate forum:

Mercury Motors (this forum)
TWO STROKE models (Less than 135 hp).

Mercury - 2.0/ 2.4/ 2.5 Liter High Performance
For discussions related to 2.0/ 2.4/ 2.5L Two Stroke motors (Carb, EFI, Optimax or Racing).

Mercury - 3 Liter & 3 Liter High Performance
For discussions related to 3L Two Stroke motors (XS, ProXS Optimax, EFI, or Racing)

Mercury - 4 Stroke / Verado
For discussions related to ALL Mercury 4 Stroke Engines.

For fastest/most-accurate assistance, please choose the correct forum.

Thanks!

[EuropeanAM]

Moving to the correct (2.5L) forum for you.

Pretty hard to keep one of those spinning that low. Idle speed is set via the throttle plate stop screw hidden between the VST and the Fuel Management (intake) Assembly.

Really a good idea to verify WHY it's having to be adjusted, and to check ALL the Sync-n-Link settings and make those adjustments to return the engine to proper settings/setup.

[leonreno]

Also might be good to verify tachometer is correct, can use a timing light with an rpm read out or a small induction tach like a Tiny Tach, or a spare outboard tach.

[JOE54]

^^^^^+1

[lpugh]

Moving to the correct (2.5L) forum for you.

Pretty hard to keep one of those spinning that low. Idle speed is set via the throttle plate stop screw hidden between the VST and the Fuel Management (intake) Assembly.

Really a good idea to verify WHY it's having to be adjusted, and to check ALL the Sync-n-Link settings and make those adjustments to return the engine to proper settings/setup.

Plus 100
I would not change that idle screw adjustment till everything else is verified to be working correctly, they very rarly need adjustment, usually the root cause is something else
Go thru all the basics first.

[lifetime1962]

Need to find a 2 stroke mechanic,NC or SC
, alarm goes beep,beep,beeps, new water pump, it does have a used ecm ,been working great, great water pressure, it has been a great motor for years s#0g944201

[JOE54]

EUROPEAN MARINE accept no substitutions

[EuropeanAM]

This would be a little older than what we normally service but if the items we discussed on the phone don't get you squared away, let me know and we will try to set up an appointment to check it over.

[lifetime1962]

This would be a little older than what we normally service but if the items we discussed on the phone don't get you squared away, let me know and we will try to set up an appointment to check it over.

had to have starter fixed, will try, I did take off oiler and check to see if shaft turns, it does, will let you know of outcome soon.

[lifetime1962]

I have installed new starter, it great, shaft does turn on the oiler, did find out why it bogs down passenger side no fire any of them, going to try power pack and see if fixes all my problems. will let you know..

[lifetime1962]

good news, problems fixed ana now it is idling at the right rpm's. heck it could have been running on 4 or 5 cylinders for a while, 67 mph @ 5800 rpm's, big change. thanks for all your help

[lifetime1962]

just a quick update , All running great , idles @ 650 rpm's , running mid 60's @ 5600 rpm's , might get more when i put the kickdown bracket on the talon i bought , it won't go in my shop so need kick down so i can raise it up and lower when i put in the shop , other than that running great. thanks for the help all , thanks don

[EuropeanAM]