How JustAnswer Works:
  • Ask an Expert
    Experts are full of valuable knowledge and are ready to help with any question. Credentials confirmed by a Fortune 500 verification firm.
  • Get a Professional Answer
    Via email, text message, or notification as you wait on our site.
    Ask follow up questions if you need to.
  • 100% Satisfaction Guarantee
    Rate the answer you receive.
Ask Tan Your Own Question
Tan
Tan, MerCruiser Certified Technician
Category: Boat
Satisfied Customers: 10620
Experience:  40 yrs. experience with complete engine repairs both inboard/outboard and MerCruiser Certified Technician.
25721800
Type Your Boat Question Here...
Tan is online now
A new question is answered every 9 seconds

I have a 1979 mercury outboard that has been sitting in my

Customer Question

I have a 1979 mercury outboard that has been sitting in my garage for 20 years. Back when I used it a lot it was a great motor with 0 mechanical problems. What do I need to do to get it running again?
Submitted: 7 months ago.
Category: Boat
Expert:  Tan replied 7 months ago.
Hello. My name is ***** ***** to do is a spark test to be sure you have spark. Look at all the wiring under the flywheel look for rotten insulation on any of the wires if you see insulation falling off wires replace it.The spark must jump a &/16" gap on a spark gap tester. I would do a compression test just to be sure it is good.If wiring is good and you have good spark start with cleaning the entire fuel system. Replace all the gaskets in the fuel pump and the carburetors. If any of the fuel line is hard replace. Remove the lower unit and replace the water pump impeller and change the gear lube. Post back with questions and concerns. If you have any issue you are concerned with post back here with findings and we can continue.Follow up questions on this subject do not cost extra even after you have positively rated my service.

Related Boat Questions