![]() If putting battery banks in parallel is impossible, you should carry cables such as car cables with alligator terminals on board to be able to put banks in parallel in an emergency situation. Even at a lower state of charge the service bank can save us by providing enough power to start our inboard engine. In fact, the services battery bank is usually much larger than the single engine start battery. Only as a measure of last resort, if your starter battery is flat you can put it in parallel with your service batteries bank to try to start the engine. You should never have the battery banks in parallel, and it is easy to forget it so always check and double check it. In some boats it is possible to put engine starter battery in parallel with the service batteries with a 1-2-both switch. Or you may find that someone has put their hands on the electrical system by connecting something to the engine battery that discharges it. It could be a dead battery that no longer holds the charge, it will need to be replaced immediately. You have to understand why the battery voltage drops after starting the sailboat inboard engine. A voltmeter is enough to keep its state of charge under control, at rest with the engine off it should be around 12.6V.Ī voltage below 12.2V is already a symptom of some problem with your system. A split charger or other similar solution should prevent you from accidentally discharging it. The starter battery should be completely separated from the services electrical system. Modern sailboat inboard engines cannot be started by hand so finding yourself with a discharged engine battery is equivalent to finding yourself without an engine. ![]() Flat batteries, problems with the electrical system that powers the starter motor or problems with the starter motor. When you turn the ignition key (or push the button) I would say there are three common problems. Sailboat Inboard Engine Common inboard sailboat engine problems During the winter it remains stationary for many consecutive months which can be damaging if we don’t adopt the necessary precautions. In addition, we use the car every day, the sailboat inboard engine is turned once in a while. The marine environment, however, is hostile to everything mechanical or electrical. ![]() In reality these are not complex engines, on the contrary, they are infinitely simpler than those of a car. Many owners treat the marine inboard engines as the engine of a car, confident that it is enough to turn the key. Distracted owners however discover that there are so many things that can go wrong. This, despite the fact that marine diesel engines are quite simple in both construction and maintenance. Interestingly, most calls to the coast guard are related to inboard engine problems. Here we will talk about the typical 15-40 horsepower marine diesel engine of boats between 8 and 16 meters. For other boats, the installations and types of engines are so varied that it cannot be easily summarised here. In this article we will talk only about some of the more common problems you might face with an inboard sailboat engine. Alternatively, read a book that deals with the subject. Refer to the many resources available online, a short google search will bring up many results. It does not store any personal data.To fully understand the operation of the inboard engine of a sailboat, you need to study at least the basic principles. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. The cookie is used to store the user consent for the cookies in the category "Performance". This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". ![]() These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly.
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