andrew swingler wrote: > > Hi, > I know this is not a 'Vanagon' question but I'm gonna give it a shot. > > My friends 74 bus with a two bbl carb has a strange starting problem. > When cold starting is not usually a problem but after the van warms up > SOMETIMES it appears to have a fuel delivery problem. > Symptoms: > Van warm > Automatic Choke flaps open > Turn the starter, Van starts and runs for 20 seconds or so. > Van dies and does not start when turned over > pour gas into the carb (prime it), van starts fine. > > This problem happens frequently enough to make driving in the city a night > mare! BUT it does not happen all the time and it seems the hotter the > temperature outside the more frequent the problem. > > ANyways I have now been kindly asked to fix it. I am thinking: > > a) intermittent fuel pump...hmmmm its mechanical so I doubt it. > b) fuel filter......but it runs fine when started, up and down hills > c) some vapor lock problem.....??????? > d) some carb issue.........advice???? > > Short of taking the entire fuel system off (its from the east canada so > the chasis is RUSTY) and putting it all back on again I really don't know > where to start. > I have inspected the filters and purged the hoses..... > > ANy suggestions?? > > my friend thanks you in advance > > ANdyS > Vancouver BC Andy the 74 busses have rubber elbows on the cross over pipes and idle tubing if it runs ok cold and not and not so hot when warmed up then a vacuum leak is possible. The fuel pump push rod wears out it gets shorter over time this gives lower fuel volume. the first symtoms are at full throttle as you go up a hill on the highway the van just dies because it runs out of fuel because the travel of the arm on the pump is to short good luck Bob http://www.bostonengine.com |
Please note - During the past 17 years of operation, several gigabytes of
Vanagon mail messages have been archived. Searching the entire collection
will take up to five minutes to complete. Please be patient!
Return to the archives @ gerry.vanagon.com
The vanagon mailing list archives are copyright (c) 1994-2011, and may not be reproduced without the express written permission of the list administrators. Posting messages to this mailing list grants a license to the mailing list administrators to reproduce the message in a compilation, either printed or electronic. All compilations will be not-for-profit, with any excess proceeds going to the Vanagon mailing list.
Any profits from list compilations go exclusively towards the management and operation of the Vanagon mailing list and vanagon mailing list web site.