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 Dominick Your Own Question
Dominick, Marine Mechanic
Category: Boat
Satisfied Customers: 1009
Experience:  25 Years Experience as Mechanic, 20 Yrs Boat Yard Owner/Mechanic, Factory Certified
Type Your Boat Question Here...
Dominick is online now
A new question is answered every 9 seconds

New problem with the port 454 Crusader engine. Still steams

Customer Question

New problem with the port 454 Crusader engine . Still steams a bit but doesn't go over 180 now . But what it does do now is that after running for about 30 mins ... Engine will just shutdown as if the ignition key was turned off . No sputtering . But it starts right back up no problem . After it shuts down the first time it will constantly do it .Leave the engine to cool down and it runs fine again for about 30 mins .Troubleshooting tips please ? Thanking you in advance
Submitted: 1 year ago.
Category: Boat
Expert:  Tan replied 1 year ago.

Hello Joseph Tan here.

Do you notice if the gauges shut off? Can you get a jumper wire and connect one end directly to 12 volts and the other end directly to the positive side of the ignition coil and run the boat?

Customer: replied 1 year ago.
Hmmmm will try ... Just notice tach gojng to zero of course ... Never really looked to see what the other guages do ... I usually try to start it up right away .
Expert:  Tan replied 1 year ago.

Disconnect the gray wire at the tach or the ignition coil. If the tach shorts it grounds the ignition killing spark. It could be a faulty tach.

Customer: replied 1 year ago.
Okay will try ... Will let you know ... Thank you
Expert:  Tan replied 1 year ago.

Your welcome.

Customer: replied 1 year ago.
But one question why would it do it after running for awhile ?
Expert:  Tan replied 1 year ago.

Who knows it might take it that long to fail or the engine to loose voltage. Temperature can cause electrical components to fail.

Corrosion will create heat and the loss of continuity and voltage loss.

Customer: replied 1 year ago.
Okay ... Will try ..
Expert:  Tan replied 1 year ago.

Thank you.....Keep me posted.

Customer: replied 1 year ago.
I will of course !!
Expert:  Tan replied 1 year ago.

Ok great.