Mercury 200xs 2.5 don

[comptonbass]

0t819305 2004 have had this motor since July cannot get it to run right I need recommendations on service plan. I plan on sending the whole fuel system to don for repair. But who should I send the computer to for testing?

[EuropeanAM]

Really shouldn't have to "send computer off" as it would normally be pretty obvious if there's a computer problem on this particular PCM.

Start with the BASICS (current tests to reflect CURRENT condition):

-Compression Test

-Spark Test (also confirm correct NGK Iridium Spark Plugs)

-Fuel Quality, Delivery, and Air/Fuel Pressure Tests at Idle, Under Acceleration, 5/10/15 seconds after engine shutdown.

-Computer Diagnostic System PRINTOUTS of the Run History and Freeze Frame (Fault) History.

Beyond that, would need some information on "cannot get it to run right".

[comptonbass]

All tests listed have been verified. I talked to you on the phone in August with my results and I am still having issues. Need to send you the fuel system to test all injectors and calibrate the pressure regulator. Just wanted to verify if I needed to check computer too.

[EuropeanAM]

One final check before you tear it down- have you removed and inspected the REEDS for chips, cracks, standoff in excess of .020" at the tip, or "grit/grime in the seat area of the reeds"? Very important.

[comptonbass]

Yes I have inspected the reeds. pulled them out inspected the cages and the reeds themselves they are in great shape and snug and all rubber on cages is still sealing.

[EuropeanAM]

Sounds like you've covered about everything else you could, then.