Wont restart

Risk Taker

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Aug 17, 2021
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Hello all, I have a 1989 24' Larson Delta Conic. 5.7 V8 mercruiser. After I run the boat and engine is hot about 20mins and shut it off, it won't restart. The engine cranks but won't turn over. When I come back to it the next day it starts and runs fine. Just having a problem restarting after its been running for awhile. I changed the Ignition coil. What do you think the problem can be? Thanks
 

alldodge

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Mar 8, 2009
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Need a motor serial number to verify but for now I'll assume this is your motor
https://www.mercruiserparts.com/5-7l-gm-350-v-8-1988-1995-0b525982-thr

Does it have a 2bbl or 4bbl carb?

To clarify a statement you said it cranks but does not turn over. For most of us those 2 terms mean the same thing. It will crank and turn over but it will not start

Do you have fuel in the carb? So when the throttle is pumped do you see fuel squirt in the throat of the carb?

If there is fuel, does it have spark?
If unable to see spark, run thru this troubleshooting sheet
TBV Troubleshooting.jpg
 
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