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Possible vapor lock?

#1

TrayWay143

TrayWay143

I have a craftsman gt5000 that i recently got running after rewiring it,it will run perfectly while idling and reving but when driving even at a slow speed after about 15-30 minutes it will bog down and turn off.


#2

R

Rivets

First you need to determine whether you have a fuel or spark problem. Purchase an inline spark tester and install it, so you can determine if the spark changes when it starts slowing down. If the spark is constant, I would the try to determine if the fuel flow has decreased, by installing a clear fuel filter and watch the fuel flow when changes occur. Let us know what you find.


#3

TrayWay143

TrayWay143

Rivets said:
First you need to determine whether you have a fuel or spark problem. Purchase an inline spark tester and install it, so you can determine if the spark changes when it starts slowing down. If the spark is constant, I would the try to determine if the fuel flow has decreased, by installing a clear fuel filter and watch the fuel flow when changes occur. Let us know what you find.
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It was spark all the time and i had a piece of clear fuel type of line and at some point there would be bubbles but they would clear up when getting to the fuel pump. i also forgot to mention that my exhaust is coming out the side,would that be enough heat too cause vapor?


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