620 Vapor Lock Fuel Issues

1972-1979 Datsun 620 forums. All 620-specific topics and discussion can be found here.
DavetheDatsun
Posts: 2
Joined: Wed Jul 03, 2019 11:03 am
Car: 1973 Datsun 620 Pickup

620 Vapor Lock Fuel Issues

Postby DavetheDatsun » Sat Jul 13, 2019 7:42 am

My '73 620 appears to be having issues starting up again after running in the heat for a long period time. Does anybody have any issues with vapor lock?


spanner
Posts: 1
Joined: Wed Jun 01, 2016 5:27 pm
Car: 1973 datsun 620 pickup

Re: 620 Vapor Lock Fuel Issues

Postby spanner » Sun Oct 06, 2019 4:32 pm

I have the same problem - same truck as yours.
I think it's fuel evaporating in the carb due to heat
Takes a few seconds of cranking to get fuel, then it starts.
It's annoying but I don't see there's a cure unless we move to Siberia.

DavetheDatsun
Posts: 2
Joined: Wed Jul 03, 2019 11:03 am
Car: 1973 Datsun 620 Pickup

Re: 620 Vapor Lock Fuel Issues

Postby DavetheDatsun » Thu Oct 24, 2019 5:34 pm

Ha that's funny. Yeah I am not sure if there is a good solution. I am going to play around with a few different things and see if I can figure something out.


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