Engine stopped suddenly. Now won't start. - SailNet Community
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post #1 of 8 Old 08-27-2019 Thread Starter
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Engine stopped suddenly. Now won't start.

Hi all,

Yesterday while running in neutral to charge up the batteries my good old Thornycroft T98 stopped suddenly and now the old girl won't start.

I have replaced all fuel filters suspecting a blocked filter and bled engine, but still no joy. Turns over, doesn't start.

Should I now perhaps be suspecting the fuel shutoff solenoid thing? (There is no 'stop' button on this engine, it is a the ignition key turn that 'stops' the engine.)

Fuel in the tank looks clean. Engine was running fine the day before for 10 hours on passage.

I guess I am wondering if anyone has some ideas to throw at me where to look now?

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post #2 of 8 Old 08-27-2019
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Re: Engine stopped suddenly. Now won't start.

My thinking...

If you truly bled the fuel lines then the engine is getting fuel.
I do not know that engine.
I would go back to the fuel lines and learn what is stopping the fuel....elec component, etc

Look at elec conne tions

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post #3 of 8 Old 08-27-2019
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Re: Engine stopped suddenly. Now won't start.

When you say you bled the engine, did you see fuel coming out of an injector?
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post #4 of 8 Old 08-27-2019
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Re: Engine stopped suddenly. Now won't start.

Can you hot wire the fuel shut solenoid? .It should click when key is off. If its an external push/spring back unit manually diddle it.
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post #5 of 8 Old 08-28-2019 Thread Starter
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Re: Engine stopped suddenly. Now won't start.

Quote:
Originally Posted by Capt Len View Post
Can you hot wire the fuel shut solenoid? .It should click when key is off. If its an external push/spring back unit manually diddle it.
Thanks all!

Len was close.....I bled the lines, suspected the solenoid so hot-wired it and it was a happy......click click. So ran another wire and engine is now starting.

So Solenoid is good. Either I have a wiring issue or a issue with the starter relay. I am playing with the starter relay and I think it is that.

Figuring that out and improvising a fix will be tomorrows job.

It's now beer o'clock

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post #6 of 8 Old 08-28-2019
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Re: Engine stopped suddenly. Now won't start.

if engine cranks starter solenoid is good, problem in harness to fuel solenoid or the wire fell off the key mechanism. Basic...Should be three wires ,hot in. run (fuel solenoid) and start (starter) Some keys have twist to left (glow plugs solenoid)
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post #7 of 8 Old 08-31-2019
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Re: Engine stopped suddenly. Now won't start.

Oh for an old-fashioned mechanical shut-off.
Cable is best, and if it sticks or breaks, then disconnect the cable end and pull it with your finger.
How simple things used to be.
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post #8 of 8 Old 08-31-2019
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Quote:
Originally Posted by Rockter View Post
Oh for an old-fashioned mechanical shut-off.
Cable is best, and if it sticks or breaks, then disconnect the cable end and pull it with your finger.
How simple things used to be.
One of my previous boats had a piece of coat hanger wire as a shut off cable. Apparently an emergency fix that the PO decided was good enough.
Yeah the solenoid that shuts off the engine when you turn the key is convenient, but unreliable. Also requires good battery power to start the engine which is not always available. No crank start, maybe no spin it up with the compression release on. Cable is better.
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