1988 merc 115 fuel pump and enrichner solonoid

[hogghed]

HOW DO I CHECK THE FUEL PUMP ON THIS MOTOR ?? ALSO, IS THERE A WAY TO CHECK THE ENRICHNER SOLONOID ? OHM TEST OR OTHER ?

 

[hkeiner]

Re: 1988 merc 115 fuel pump and enrichner solonoid

For the enrichener, the below guide may help.

For the fuel pump, one easy test is to squeeze the fuel bulb while the motor is running and see if it helps the motor run better. If it does, then the fuel pump is suspect. If it makes no difference, then the fuel pump is probably OK.

A more definitive test for a fuel pump is to hook up a pressure gauge (using a T connection) downstream of the fuel pump and see if the PSI is above minimum spec when the motor is running at various RPMs. The specs shown below are for a 115hp, but I can't be sure that they are correct for your motor as you did not provide your morors serial number. However, they do give you an idea of what you might be looking for.

 

[hogghed]

Re: 1988 merc 115 fuel pump and enrichner solonoid

well, thats the problem...it wont start.

 

[hogghed]

Re: 1988 merc 115 fuel pump and enrichner solonoid

thanks for the link, i'll try the test series today...

 

[hkeiner]

Re: 1988 merc 115 fuel pump and enrichner solonoid

If it won't start at all, you should go back and do some basic troubleshooting before assuming that it is a fuel problem. For testing the spark, a spark tester is a good choice. For testing compression, a compression gauge is needed. For testing fuel supply, squeezing the fuel bulb and/or spraying some fuel mix into the carb throat before cranking are some methods to see if fuel is not getting to the cylinders.

If you have already peformed some troubleshooting tests, list the results and perhaps this information will help others identify what the problem may be or what additional troubleshooting test should be done.