Evinrude boat Motors parts
| The following is supplied by BPS as a brief reference guide only. BPS assumes no liability for loss, damages, or incorrect diagnoses resulting from usage of this information.
There is a golden rule to any gasoline powered motor whether 2 stroke or 4 stroke. Compression, fire, and fuel, are the three required elements for a motor to run. If any of the three are lacking, you will obviously experience a problem. This page is designed to help you with the main topics where common problems occur. |
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The Fuel system on an outboard, being a breed of its own, can confuse the average person during diagnosis. For example: an anticipated fuel problem, can sometimes actually be ignition related, or even compression related. This is why it is always a good idea to check the simple things first. If fire is good to ALL cylinders, and compression is within range showing no more than 15 lbs. difference from cylinder to cylinder, then the problem would most likely be fuel related. Either stopped up carbs, weak or bad fuel pump, low or no compression on cylinder supplying pulse to fuel pump, a bad squeeze bulb, tank not venting, stuck anti-syphon valve on tank, loose fuel line connections, etc., could all be causing a problem you may be encountering. Upon diagnosis, just remember to check all three required elements before you simply start replacing parts by trial and error. We receive many inquires on how to test the Johnson/Evinrude VRO oil injection system. Below are two methods to troubleshoot problems with them. |
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Q. I have an oil injected motor and I hear the warning horn, but I dont know if it has to do with oil injection or overheating. How do I know which sound is what?
Q. My motor doesn't have oil injection, do you have a way that I can troubleshoot problems in that situation?
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Ignition systems can be the "tough" problems to figure out for the average person, and they can cause a very wide variety of symptoms. Outboard ignition systems are very different than those of the automotive type. What is causing your motor to not start, cut out, run good to a specific RPM, overall run poorly? First make sure to check that timing is advancing properly and fully, there are no broken damaged or bare wires, nothing shorted out, no rogue arching spark around plug wires, etc. If you are having an ignition component problem, special equipment is usually required for testing most system parts such as stators triggers and power packs, so you may opt to let a qualified technician diagnose these problems for you instead. Don't listen to advice from the guy next door of "try changing this, or try changing that". Trial and error replacement of ignition parts can get VERY EXPENSIVE if you don't get it right the first time, and dealers or parts houses WILL NOT take returns on electrical parts! That could easily wipe out the original idea of trying to save a buck. If you decide on diagnosing and repairing the outboard ignition system yourself, and you have access to testing equipment, then check out the following links that provide valuable information to help you along. |
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