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I know this is older but i had the same issue with mine this past Friday freshly after I updated same message and it was a calm morning no chop on the water and direction set to forward any idea?

Well that definitely explains why I was getting such a high reading I want to thank each and everyone of you for taking the time to help me with all your great information I finally threw my hands in...

Ok update on it peeing I ran a wire up telltale and shone mud came out after that started peeing but I believe bottom 2 cylinders are flooding there temp is 120 where top cylinders are 145 to 155

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Ok now I've really screwed up as per Manuel minus the actual tps test harness just pinned the back of the plug with port temp sensor unplugged key on tps was reading 7.45v which is full throttle...

Haha ������ I will definitely check to see if it still has them do you just unplug them? And see if it changes anything ? Also I checked Air temp sensor today in a bowl of ice water as shown in...

Where you say if I still have the idle stabilizer it would be a good time to remove before set up does that mean do away with completely? I've heard mixed reviews on them

Lol absolutely at this point I'd be happy with 1/4 lol but your right there aren't many probably within the country that gave 1/2 the knowledge Don does

Thank you so much for all your help , now the fun part is finding someone in my neck of the woods that is even half as knowledgeable as you on it engine and can do the steps you have here im in...

Haha your probably right

Oh ok I won't do that anymore I had just read on a forum that you should rev the engine before taking off to clean off the plugs if it was bogging

Thank you for the reply the oil injection was removed before I bought it 10 years ago something about a gear being prone to stripping out on this make of mercury and it robbing the engine of oil and...

Very sorry your dealing with this problem too definitely the worst time of year for our boats to be having problems the difference with mine and yours is mine has no problem starting starts right up...

Thank you I will have to check those I noticed something today on the water I hadn't noticed before when in neutral I snap the throttle and rev the engine when I let off it drops Rpm and dies...

Thank you for the reply as far as sensors and switches set I checked the throttle position sensor and it is in spec what other sensors or switches would need to be checked?

Would a hard wired pump cause it to run rich?

Hello this is my first post but I have followed the forum for years so thanks for all the good advice in the past my problem is I have a newly rebuilt 94 mercury 150 efi serial number 0g028731 only...

Hello this is my first post but I have followed the forum for years so thanks for all the good advice in the past my problem is I have a newly rebuilt 94 mercury 150 efi serial number 0g028731 only...