smelly_cat Posted June 15, 2006 Share Posted June 15, 2006 Would a Sticking or clogged Bowl Vacuum Valve cause the float bowl to pressurize and prevent gas from goin into it? I drove to work today and decided to take a windy 2 way road. My 84 GL SW started buckin and coughin again, and it had run pretty good all week. After causing a log jam and making 30 people stuck behind me late for work . The GL restarted and drove like a charm for the next 4 miles. So I'm fumming when I walk in the office. A coworker who was stuck behind me, said that sometimes fuel lines collapse and choke off fuel, so after work today ,while I was seeing if the lines were mushy, I discovered this little valve (Bowl Vacuum Valve ) , I popped of the top of it and the sponge filter was like a rotten dead mouse, so I cleaned it out and I blew/ sucked on it and nothing happened, I washed it out real good and it appears that is actvates when the smaller vacuum line sucks. I theorize that when the car is running it opens and fuel vapors and pressure is pulled out of the foat bowl. Anybody think I am on to something? Also.. I think using my lungs to aspirate this valve has made me a little ill. SC Quote Link to comment Share on other sites More sharing options...
exister99 Posted June 16, 2006 Share Posted June 16, 2006 Your symptoms may also be caused by too much fuel being dumped into the intake. Take a look in down the throttle when idling. If you see what looks like a small waterfall then your carb is dumping liquid fuel down the intake and the engine will consequently run like crap. Whatever the cause it sounds like you need a carb rebuild. If one of the internals is rotted out then chances are other things inside are falling apart as well. Rebuild kit at Napa: $40 Time for rebuild: one tedious afternoon getting to know the guts of your Soob carburetor: priceless Quote Link to comment Share on other sites More sharing options...
smelly_cat Posted June 16, 2006 Author Share Posted June 16, 2006 thx Exister, I rebuilt the carb and the engine runs pretty fine . I got some choke kick down problems and sometimes I idle at 3K. but it goes. This fuel starvation is driving me wacky. I thought this morning I would have a pleasant drive and after about 7 miles cough sputter s buck conk. Side of the road. Ran the starter for about 40 seconds Vroom last 3 miles to work no problemo. Its the hardest problem to troubleshoot cause as soon as it happens, it fixes it self. Crazy huh? SC Quote Link to comment Share on other sites More sharing options...
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