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Do you use a twist on fuel cap under your Le Mans style cap??? If you do take it off and see if the problem persists. I suspect much of what you are hearing referred to as "vapor lock" is really a situation in which the tank is not ventilated properly (this isn't vapor lock).
If the car runs fine without the cap you can do one of three things. leave it off.. Drill a 3/16 hole into the rivet holding the cap together or fabricate a tank vent.. 90% of the guys I know do not run a twist on cap..
5/16 or 3/8 fuel lines would not cause the symptoms you describe.. 289, 302 and even FE Mustangs ran 5/16 lines without a hitch.. Think of all that fuel being pushed through a .110" metering valve (typical Hollley valve or even two of those) But zero fuel pressure could cause the problem to occur if you sucked a line dry due to not having a vent. It would correct itself once the line refilled..
I do not suggest the following advice is safe or legal.. But it is effective.
Regards,
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michael
A man that is young in years, may be old in hours, if he have lost no time. But that happeneth rarely. Generally, youth is like the first cogitations, not so wise as the second. For there is a youth in thoughts, as well as in ages... Sir Francis Bacon (1561-1626)
Last edited by SCOBRAC; 06-18-2002 at 08:13 PM..
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