Why does my boat keep stalling?
If your boat motor is fuel injected, a dirty or defective airflow sensor can cause poor engine performance. Cleaning or replacing the airflow sensor may clear up your stalling problems. A dirty carburetor can’t properly regulate the air and fuel mixture that the engine needs to run which can lead to stalling problems.
What should I do if my Mercury Mariner wont start?
Grab your voltmeter and yank the starter relay. You’ll be testing the terminals in the relay socket. Look at the bottom of the relay to find the terminal number and locate those same terminals in the socket. With the key turn to the START position, you should see battery voltage on terminals 2 & 3.
Where is the starter relay on a Mercury Mariner?
Ford uses an antitheft system to tell the PCM to energize a starter relay located in the battery Junction box. The image shown here is from a 2008 Ford Escape, Mercury Mariner. So your first job is to find out whether the no start problem is due to a bad relay or some other component or wiring harness.
What to do if your boat engine won’t start?
If it’s between 0 and 8 volts, you have a battery problem. Start the engine from an alternate battery, or start the generator and make sure the charger is working. Some boats have a parallel switch for engine starting.
How to solve cranks, no start, no DME?
Disconnect the battery for 20 minutes, reconnect, i.e., reboot the DME. (This is the old pull the plug / plug it back in trick that works to solve about 99% of most problems with computerized equipment since the mid-20th Century.) You mentioned you disconnected the IBS sensors to the battery. I would try two things: 1.
Grab your voltmeter and yank the starter relay. You’ll be testing the terminals in the relay socket. Look at the bottom of the relay to find the terminal number and locate those same terminals in the socket. With the key turn to the START position, you should see battery voltage on terminals 2 & 3.
What to do if your outboard crank wont turn on?
Crank the engine or use DDT output load test for each ignition coil and observe spark. If no spark is present, replace appropriate ignition coil. If spark is present, replace spark plugs. Air in the fuel system. To correct this check for air in the fuel supply manifold. More information on this can be found in the download repair manual.
Why does my MerCruiser engine wont start?
Question: My Mercruiser 3.0L Marine Engine will crank over but won’t start. Is there an easy place to start when trying to diagnose this problem? Answer: There are 3 basic fundamentals with the operation of an internal combustion engine
Ford uses an antitheft system to tell the PCM to energize a starter relay located in the battery Junction box. The image shown here is from a 2008 Ford Escape, Mercury Mariner. So your first job is to find out whether the no start problem is due to a bad relay or some other component or wiring harness.