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Verify the battery connections are clean – as corroded connections can keep a Mercury outboard. Running very sluggish but starting easily.
The Most Common Outboard Engine Issues.
Mercury outboard air filter problems. How to replace defective air filter on 2006 Mercury 75hp outboard. This will be the same on a few other years and is for 75 90 and 115hp engines. I pulled the cover off my 115 4 stroke this weekend to check the oil level.
While looking everything else over I noticed the air intake filter had some damage to it. It looked like the foam in the filter was just falling apart. The intake filter is made out of some sort of foam with oil in it.
Many thanks to dbrown for the clear photograph of the air filter on the Mercury VERADITO or FOURSTROKE 90-HP which is a source of problems. There are millions of automobiles running on ethanol-gasoline blended fuels that have air filters which. Outboard Idles Roughly Or Stalls.
Low pressure on the fuel pumpFuel tank air vent is closed or restrictedDamaged or restricted fuel lines and fuel filters. Outboard May Hesitates Upon Acceleration. Ignition system has no spark or even weak or low sparkIf the Carburetor is overflooded.
Motor May Experience Sputtering Or Powe Loss Issues. From somebody spray grease or degrease on the air filter seen that happen all the time And yes that would reduce the air intake for he motor and cause it to idle erratic. Just for future reference for those of you that may own an Optimax one day or currently do.
Very common problem youll most likely run in to. Mercury Four Stroke Air Filter. Posting this in the main forum as a public service announcement.
If you own a pre-2014 75-115hp Mercury four stroke pull your cowling off and check the condition of your foam air filtersilencer. Between the last time I serviced my outboard in April and October my foam air filter disintegrated completely. These motors do have a tell tale sign there is an issue with the complex fsm fuel supply module If you check your air filter on the air intake and it is falling apart bits will get sucked into your engine.
That degrading of the foam is from excessive gas fumes in the vent eating the filter. So I did have that issue. The intakes were cleaned.
This authors 2004 Mercury 200-HP OptiMax outboard engine has gone through three air compressors in seven years. The first air compressor failure on this Mercury OptiMax occurred at 300-hours. The second air compressor failure on this Mercury OptiMax occurred at 750-hours.
And most recently the third failure of an air compressor on this Mercury OptiMax occurred at. Jul 23 2011. Cars travel down gravel and dirt roads for hundreds of thousands of hours.
The majority of what is in your air filter is bugs and bug particles and the occasional bit of dirt. Boats generally travel down water for tens of hours the air is much cleaner and nobody on the planet no mater how much. Check over the boat fuel filter and its fittings.
Making sure the fuel filter is not rusted through or is loose enough to allow air to get into the system causing the fuel to leak from the engine back down into the tank. Where To Start Troubleshooting. The Most Common Outboard Engine Issues.
Fuel Systems and Flushing - YouTube. Repair or replace the defective part s if there is no continuity. If there is continuity replace the electrical fuel pump.
If you hear the operation sound check each part of the fuel system individually. First inspect the fuel filters and look for clogs cracks kinks or. Lakes tend to be dust-free environments.
Marine engines typically will not have a true air filter. Theres an air box in front of outboard engine carburetors to quiet the sound of air. Air vent in fuel cap not open.
Faulty emergency kill switch. Some engines – not the pull-start kind – have a battery that starts it. If your engine has a battery make sure it is charged up before use.
Verify the battery connections are clean – as corroded connections can keep a Mercury outboard. Loosen the fuel filter hose clamps and pull off the filter. You want to blow through both ends to look for obstructions.
If the filter is good reinstall it. Inspect the fuel filters and the air filter too if your outboard has one. One of the first signs that the powerhead isnt getting enough air or fuel is when the motor stalls particularly when idling.
Clean or replace the filters and also drain any water from the fuelwater separator if you have one. Your question was - I have a mercury 115 optimax. Running very sluggish but starting easily.
Answer - I would be happy to help you with that. The engines need 3 things to run properly. Compression timed spark ignition and the proper ratio of fuel to air.
Your outboard motor is the heart of your marine vessel and if it is having trouble with the fuel supply it can put a damper on your day on the lake river or ocean. Two of the most common problems when it comes to fuel supply in your outboard motor are bad fuel and a bad fuel filter. Video showing service procedure for mercury 4 stroke outboard fuel supply module consisting of high and low pressure fuel pumps float switch and presuure.
Details that apply to your Mercury Marine power package. When contacting Mercury Marine about service always specify model and serial numbers. Descriptions and specifications contained herein were in effect at the time this was approved for printing.
FILTER Air 1 required per assembly 35-897575T01 - 35-897575T01 - FILTER Air More info Unavailable Replaced by 35-897575T02 35-897575T02 - 35-897575T02 - FILTER-AIR More info Unavailable Replaced by 35-8M0082911 35-8M0082911 - Air Filter More info 10533 2. This will be all the information that you need to know about what problems Mercury Verado Engines have had through the years. The Oil Squirting Time Jumping Hold Up In the early years when the Verado was first put on the market in late 20042005 the.