2002 150HP Mercury XR6 cooling issue

E

Express 150HP Mecury XR6

Recruit
Joined
May 29, 2012
Messages
3
Tell-tale stream not very strong when idling. Sometimes kind of sputtering, sometimes steady stream.
Water PSI gauge very erratic. Jumps around from 5 to 15
Alarm from throttle/shift control beeps after running at 2500RPM for a few minutes.(assume it is overheating alarm)
Installed new water pump impeller. No change.
2002 150HP Mercury XR6 s/n OT148198
 
E

Express 150HP Mecury XR6

Recruit
Joined
May 29, 2012
Messages
3
Re: 2002 150HP Mercury XR6 cooling issue

Any suggestions on what to check or try next would be appreciated.
Express 150HP Mecury XR6;3794757]Tell-tale stream not very strong when idling. Sometimes kind of sputtering, sometimes steady stream.
Water PSI gauge very erratic. Jumps around from 5 to 15
Alarm from throttle/shift control beeps after running at 2500RPM for a few minutes.(assume it is overheating alarm)
Installed new water pump impeller. No change.
2002 150HP Mercury XR6 s/n OT148198
 
W

westexasrepublic

Chief Petty Officer
Joined
Jun 17, 2009
Messages
524
Re: 2002 150HP Mercury XR6 cooling issue

check thermostats opening properly, then check poppet valve. both may just need replacing. cheap and easy. youtube the videos
 
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