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Both 350 engines won't start. They turn over well, have fuel…

Customer Question
Both 350 engines won't...

Both 350 engines won't start. They turn over well, have fuel and spark.

Mechanic's Assistant: Sometimes things that you think will be really complicated end up being easy to fix. The Marine Mechanic I'm going to connect you with knows all the tricks and shortcuts. Tell me a bit more about what's going on so the Marine Mechanic can help you best.

The only thing I can think of is to try ether. Also, I could check every plug for spark and possibly the fuel is old.

Mechanic's Assistant: Is there anything else important you think the Marine Mechanic should know?

The bilge pump failed and the engine compartment got water up to the oil pan bottoms. But I've dried everything out and don't see any electrical parts having been affected.

Submitted: 11 months ago.Category: Boat
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Answered in 2 minutes by:
9/10/2017
Marine Mechanic: Jason, Marine Mechanic replied 11 months ago
Jason
Jason, Marine Mechanic
Category: Boat
Satisfied Customers: 18,203
Experience: Degree in Marine Technology. Gas and diesel marine mechanic.
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Good morning, my name is ***** ***** am I speaking with? I read what you wrote. Who makes these engines? Are they Mercruiser, Volvo, OMC, something else? Do you have a model or serial number on them so I can see exactly what you have?

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Customer reply replied 11 months ago
Crusader 350 XL 92168 & 92169
Customer reply replied 11 months ago
I forgot, Good morning I'm Al in Seattle.
Marine Mechanic: Jason, Marine Mechanic replied 11 months ago

Hi Al. Okay got it. Is there a history to these engines, have you ever personally seen them start? When you turn the key to start, does the engine crank over quickly, like your car engine, or are they slow to crank over?

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Customer reply replied 11 months ago
They run fine. Just had the srarboard rebuilt. Have new batteries. Shut them down - had the bilge pump incident and they won't restart.
Marine Mechanic: Jason, Marine Mechanic replied 11 months ago

Got it. Do you have a timing light so we can check for spark? Also, do you have any starting fluid? Are the engines actually spinning over when you turn the key?

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Customer reply replied 11 months ago
I checked for spark with a light between the wire and plug. I have starting ether. The starter motors sound as they should. They are under load and not spinning free.
Marine Mechanic: Jason, Marine Mechanic replied 11 months ago

Those little lights between the wire and plug are designed more for things like lawn mowers, they won't give a good indication of spark on a marine engine. The engine needs 3 things to start. Compression, timed spark ignition and fuel. Starting fluid is a fuel. Have a helper turn the key and crank the engine over while you spray starting fluid in the carb at the same time, and let me know if it attempts to start or if there is any reaction at all from the engine.

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Customer reply replied 11 months ago
Okeydoke, I'll get back.
How do I find you again?
Marine Mechanic: Jason, Marine Mechanic replied 11 months ago

Just reply right back here like you have been.

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Marine Mechanic: Jason, Marine Mechanic replied 11 months ago

Hello, just checking in. Any progress?

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