could this be vapor lock?

DaltonGang

Member
Aug 11, 2020
104
Boat Info
1995 SeaRay 370 Sundancer
Engines
8.1 Horizons
Been battling an engine stalling issue just out of blue.
Starts, runs for a minute then dies. I can wait a few minutes, same thing over and over.

(8.1 engines with Gen 3 newer fuel cool)

Long story short, I switch fuel cool modules from the good engine to bad, now it runs fine.

"bad module" has new parts, filters, verified good pumps with 12v, etc but today I noticed the bottom raw water inlet was totally plugged. I stuck a screwdriver in there and water came gushing out.

So my question is this. After just 1-2 minutes of running with no water flow will it really create enough heat in the module to create vapor ?? I'm hoping so because new modules are $1500 right now and I'm not at the boat to test this one that was plugged.
 

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