I have a 2001 Mercury 200Efi. Ser#0T391419.
I’m apologizing in advance for the lengthy post. I had my motor rebuilt 3 years ago,ever since then I’ve had nothing but problems. First of all the hole shot went away,so I took it to the marina the following year after they rebuilt it. They had it for a week found nothing wrong said I need a different prop, they changed me $600. So I tried some different stuff with the prop ended up drilling extra holes in it. Helped a little then about that same time I was experiencing the motor not wanting to start, figured out when it got hot outside it wouldn’t start. So I figured out when it happened I had spark and fuel pressure, fuel wasn’t hot. Sprayed with carb cleaner then it would run for a couple seconds. Then I decided one night when it wouldn’t start I would strap an ice block to the Ecu tried it an hour later started and ran fine. So figured Ecu, sent it to Simmons to have it rebuilt got it back same thing no different put block of ice on it again hour later it started. There saying it’s not there problem. Another $800. So now Im stuck again. List of things I’ve done in the past year. New fuel pump,thermostat impeller and 3 sets of plugs, new Cdm box. Tried a different trigger checked stator and cdm. So I need some help tired of throwing money at it. Thanks Rich