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 Noel Schembri Your Own Question
Noel Schembri
Noel Schembri, Marine Technician
Category: Boat
Satisfied Customers: 1951
Experience:  Advanced technical diploma
41498811
Type Your Boat Question Here...
Noel Schembri is online now
A new question is answered every 9 seconds

I have a 1982 johnson 70 horsepower. I had carbs redone ,timing

Customer Question

I have a 1982 johnson 70 horsepower. I had carbs redone ,timing set and all new electronics , put on motar. Outside of water it runs great but when in water it falls on face. No power at all
Submitted: 1 year ago.
Category: Boat
Expert:  Noel Schembri replied 1 year ago.
Hello my name is ***** ***** I will assist you. Have you checked the compression of the engine? Normally it should be of minimum 100 psi per cylinder.
Noel
Customer: replied 1 year ago.

Yes. Compression is good.

Expert:  Noel Schembri replied 1 year ago.
Ok try the following: while the engine is without power remove the fuel line from the engine and see if it will start to run properly before it goes out of gas. If it does then the problem is with the diaphragm pump. It got thorn and it would need to be rebuilt. To do this you need a diaphragm rebuilding kit.
Noel
Customer: replied 1 year ago.

Aldeady done that.

Expert:  Noel Schembri replied 1 year ago.
Ok then next thing i would check is to remove the flywheel and see if the magnets are still in their place or have moved, as they tend to stick off the flywheel and the timing goes off.
Noel

Related Boat Questions