Just recently my 88' 200 HP Mercury has not been able to acheive WOT. What it does exactly: It gets to WOT for 1 second and then backs off. I intially tested for spark in all 6 cyclinders. 3 of the ignition coils were not firing. I tested the stator and found that the blue/white and red/white stator leads had no resistance between them and the red and blue stator leads had the wrong resistances between them, so I replaced it. Then I tested for spark once again and found no spark on the same 3 coils, naturally I suspected the switchbox and replaced it. Now I have spark in all six cyclinders. It started up better than it had in a long time, smooth idle. However, when I took it for a ride I still couldn't acheive WOT. I suspected the remote control key harness, so I disconnected it... didn't work. Then I thought the temperature sender might be grounding out and making my engine think it was overheating when it wasn't. I disconnected it...didn't work. I went back to the ignition. I have CDI trigger and didn't know the proper resistances and wasn't able to test it. I know the trigger controls the advance spark....so maybe it is that. So I was just able to get a good OEM trigger and haven't tried it yet. My question is... Do you think it is the trigger causing my problems or a fuel problem. My fuel line, suction ball pump, and inline filter are all good.<br /><br />Thanks for any comments or suggestions<br />Andy
