<VV> Re: Vapor lock, was Self pity and whining

[BobHelt at aol.com]

In a message dated 5/4/2006 5:23:19 AM US Mountain Standard Time,  
ncwitte at wittelaw.com writes:

Bob, if  I give it a shot of starter fluid, it will run fine on that as long
as it  lasts.

What do you think of the vapor lock idea?

Norm  



Hi Norm,
A possibility, but I doubt it. It's not hot enough yet. But you are  
narrowing it down to lack of gas, so a check of gas flow is appropriate.
When it quits, check the flow from the pump as i described before. If no  
gas, disconnect, the inlet to the pump and try to blow gas from the tank to the  
pump. Use a bicycle tire pump with a cloth wrapped aroung the hose, all into 
the  gas filler pipe. Maybe remove the gauge sender and see if there is 
anything  plugged there. 
Another possibility is a leaky hose in the gas line, either out of the tank  
or above the LR tire. 
 
Vapor lock will result in draining all the gas from the carbs. So when it  
cools off and you try to start the engine, it will be a LONG cranking time to  
get it to start. If that is your situation, then VL is a possibility. The only  
known cures are a gas return line to the tank A' LA turbos, or an electric 
pump.  Is your gas MTBE or ethanol supplemented? Ethanol can cause VL, MTBE  
won't.
Regards,
Bob Helt