Got it to do it again today on purpose.
Low speed driving no problem. Then out on intermediate highway, a couple of bursts up to 50. Same route that caused the failure before. And 5 to 6 mi later, slowed down at an intersection and it started to shudder, and idle down. Shifted to neutral and tapped the gas but it still died. Turned over good but no hint of starting. Thought ahah.I bet there is no spark. Pulled a plug wire and yes I did have spark. Then I noticed wetness at the base of the carb gasket. Lots of white smoke comes out of carb.I figure this is gas in the manifold vaporizing?
So it's not lack of spark.
It not clogged fuel line because when it does this I look in the carb and press the gas and the accelerator pumps still squirts, so there must be gas in the float bowl.
Vacuum gauge is 19 mm at slow idle and 21 at 1st fast idle step, revving and holding, vac drops but then climbs back to 21.
Could I have a sinking float?
Anyway after I waited a few minutes then the van started up. Repeated the stall-wait-restart once more on way home. Made it home turned van off in drive and watched. White smoke and wetness at base of carb.
What do you think?
Saturday, September 12th, 2009 AT 6:34 PM