Welcome to the DoItYourself Forums!

To post questions, help other DIYers and reduce advertising (like the one on your left), join our DIY community. It's free!

lack of fuel each morning at the carb


stilllearning6's Avatar
Visiting Guest

Posts: n/a

11-15-03, 05:18 AM   #1  
stilllearning6
lack of fuel each morning at the carb

1988 YJ Jeep Wrangler 258 with BBD -

It appears as if there is a lack of fuel each morning in the carb --as I am not seeing the priming squirts of fuel down the venturi as I depress the pedal .

After exactly 4 attempts to start each AM , I can get fuel at the venturi , the Jeep fires up instantly , and runs fine all day . Plenty of fuel delivery .

When the Jeep stands for an extended time , the jeep requires the 4 attempts to start. It appears as if the fuel needs to be replenished in the carb fuel bowl . Once the cranking has occurred , plenty of fuel .

Is the fuel reversing direction and emptying backward from the fuel bowl to move upstream back through the fuel filter and into the fuel pump ? Is this possible ? Is there a vacuum created upstream of the carb that would suck the fuel out of the fuel bowl ? Are there one-way check valves in the system to prevent this ?

 
Sponsored Links
YamahaWolverine's Avatar
Member

Join Date: Dec 2002
Posts: 162

11-15-03, 05:59 AM   #2  
It sounds like the fuel bowl is draining. I know the plugs at the bottom of the venturi can leak. If they do I seal them up with JB weld. Make sure the carb isn't loose from the base either.

 
Search this Thread