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Will update this, bonehead move by me. Changed impeller while waiting for new pumps and forget to reattach shift shaft, lower was staying in neutral…:doh: New gasket for tstat fixed leak there as...

Well, ran her today and not result I was looking for. Fired rights up, sounds great, idle is good but has almost little to no power above idle. Also smokes badly if try and give throttle, engines...

Wanted to update this. Replaced both low and high pressure pumps and she fired right up. Haven’t had a chance to actually run yet but hoping that was the issue.

Thought it was 6-10 psi for low pressure psi? I only tested LP pump with key in run position

Twin 2003 200HP OptiMax: OT700626 & OT674383.

starboard motor is not starting, issue appears to be fuel delivery. Less than 5 psi at fuel rain upon key up, pumps are priming and have 12V. Air is...

Don: not surprised, but you were correct. Reset fuel used and both readings were similar after running 60 miles yesterday. Thanks for advice. This was offender wire, maybe it can held someone...

Cut wire removed and capped, makes sense as we had water in the bilge day daily happened. Ran 100+ miles today, motor runs great. Unfortunately I don’t think the pcm escaped without damage though. ...

Don: was looking at sea temp sensor, the other temp sensor readings are consistent with starboard motor. Sea temp bounces between 32 to -20. The 8 pin harness was plugged in before, I only use it...

Hooked computer back up, showing 5.02 volts for sensor circuit. Checked volts at all sensors, all were good. Shook every connector but couldn’t get volts to vary more than .01-.02. All sensors...

Going thru this now, check wiring on 5v circuit. Probably have short or bad connection somewhere

Will start with tps and go from there. Only kicks code when motor is running. If it was a specific sensor wouldn’t that sensor throw a code though?

2003 200HP OptiMax: OT700626 & OT674383

Hi - port motor started surging after cleared inlet, motor felt like it was in guardian with reduced power. Check engine light on smartcraft, no warning...

Twin 03 200HP OptiMax: OT700626 & OT674383. Trying to track down check engine alarm/no horn. Picked up vesselview mobile, neither Bluetooth or smartcraft light comes on. I am plugging into my...

Mercury gateway into junction box then into nmea network.

Ok thanks will pick up a vesselview mobile.

Ok got her running and believe found source of burning up starters. Noticed I have had a clanking sound only when in neutral, given I have replaced all wiring, figured ignition switch may be bad...

Don - thank you. Have the print out from last scan, can I email it to you? Will start troubleshooting further tomorrow, not sure at this point. Starter has power but bendix won’t spin, but...

It’s the black/orange wire spliced into black wire of sending unit.

Back to square one again. Ran her today, starboard motor died again at idle after running strong. Heard a faint clanking...

Pink wire was cut out, only pink/black and black neutral wires are connected to sending unit. Think I am going to remove those as well as don’t use, just wanted to try and track down that fault code...

Carbon 16 with nmea2000 network. Lowrance displays all engine data, however it doesn’t show fault codes. Only shows generic port engine check, etc. Anyway to view the codes that a sc1000 guage or...

Wanted to update. Replaced solenoid, relay harness, wires, and starter today. Also replaced plugs as they were due anyway. Fired right up first crank. Will only be using oem parts moving forward. ...

Think aftermarket solenoid may be issue after reading up on them. “S” start terminal should be wired from key switch while “I” ignition should be left open while the solenoid is grounded to the...

Didn’t load test new battery, will check next trip to marina. It’s the right size though 1000/800. Will check compression next trip as well.

Yea both solenoid and starter aftermarket...

Twin 2003 200HP OptiMax: OT700626 & OT674383.

Starboard motor cranks but won’t fire. Narrowed it down to loss of volts when cranking. Long read, sorry! Heard you guys were OptiMax here from...