Well, the motor cranks fine but idles rough like its missing. It smokes a lot more than it used to and has no power under load. When I take off, it goes up to 2000 rpm and will stall out a few seconds later. It has new plugs and that's about it. Could this be a major problem occurring?
Thanks much!
2016 Tracker Pro Team 175 TXW
Mercury 75HP 4 Stroke
could be. BUt i had that same motor and had the same problem. Turned out my fuel lines were clogged. Check and change your fuel lines and your fuel filter
Will do. Thanks!
2016 Tracker Pro Team 175 TXW
Mercury 75HP 4 Stroke
Start with the BASICS:
-Compression Test
-Spark Test (including appropriate, clean, fresh spark plugs)
-Fuel Quality and Delivery Tests.
If no specific problems are noted in the above tests, I would highly recommend reading through the following post, and addressing ALL recommended items AT THE SAME TIME:
http://www.bbcboards.net/mercury-3-l...tem-first.html
Last edited by EuropeanAM; 05-26-2012 at 04:33 PM. Reason: Link Correction for V-Bulletin
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Thanks for the Info. I am taking it in next week to get diagnosed.
2016 Tracker Pro Team 175 TXW
Mercury 75HP 4 Stroke
My motor was doing the same as yours. It was water in the fuel. ( damn gas station.) $550 later it runs like a champ.
That was my first thought when it started doing this. I switched tanks and idled around for 45min in an attempt to clean the engine out with negative results. I even drained one of the tanks and tried fresh gas with the same result. I'm hoping that it is a simple fuel starvation issue.
2016 Tracker Pro Team 175 TXW
Mercury 75HP 4 Stroke
If it is smoking alot more, not likely to be a starvation issue, but maybe a rich condition....
UPDATE - I picked up the boat from the shop Thursday. The issue was a bad switchbox. Took it out to the lake today and it ran like a blue ribbon champ!
2016 Tracker Pro Team 175 TXW
Mercury 75HP 4 Stroke
Originally Posted by EuropeanAM
"This Link doesn't work" Could you update please...thanks!
Updated Link:
http://www.bbcboards.net/mercury-3-l...tem-first.html
Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor
Reply With Quote
