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SU's running rich - hard start. 120-130

uid 9973's pic
posted by  CVOLVO on  Sat Jun 24 00:00 CST 2006
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last visit: Fri Jul 13 18:40 CST 2012
[RELATED]

Here's a very remote symptom that I've experienced in very hot days. If the SU's are set properly, possibly there's "vapour lock" from the fuel pump to to the carburetors. This happens often on my PV (B4B with a single Carter) especially when it's very hot outside. Cold starts present no problems. My B16 Amazon, and PV glass bowl fuel pumps, have a manual lever that I can use to force fuel into the fuel bowl and eliminate the vapour lock.

I think my fuel pumps have a weak valve that is designed to prevent fuel from being sucked back through the pump and this may contribute to the vapour lock condition.

This was a common problem with pre-electric fuel pump engines and I've heard of some people that wrapped the fuel line with insulation, or poured cold water on the line to somehow break the vapour lock.
--
Cam a.k.a. CVOLVO.COM






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