No life (a.k.a. DattoMaster) 
Joined: 2008/10/10 22:02
From Melbourne Australia (and likely under the car)
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(inspired by the ideas about breathers) - it's possible something is in the fuel tank and it's clogging up the fuel pickup, it drives for a while, then clogs up. Leave it parked a little while and the vac in the fuel line (created by the mech pump trying to pull more fuel forward eventually dissipates and it unblocks just enough to get it going again.
I had this happen on another brand of car. I bought it cheap, and it had no fuel cap. I kid you not, the previous owner used to fill it and then get the paper towelling from the servo next to the pumps and fold/roll it untill it could be shoved in the filler neck and plug it like a cork . I only know because it was in there when I bought the car. Anyway, identical symtoms, as over time bits and pieces of the paper ended up in the tank and clogged it.
I'm assuming the battery light comes on when the motor stops spinning - i.e. not before that time.
TO test this might be a little tricky, but the way i found it was that when it happened, I jumped out of the car with a screwdriver and pulled the fuel line at the carby, and blew into it (like a breathalyser test!) . It was blocked, then a 'clunk' sound as it finally popped the paper out of the pickup tube, and it then started an ran ok for some time.
Another way you could test for it is to drive until it happens, then quickly remove the air cleaner lid and hand operate the throttle linkage. If it's running the fuel bowl dry it won't be able to pump petrol from the accelerator pump. (*do it a few times, it might pump the first time from the fuel left inside the acc pump sleeve/reervoir)
Given the age of these cars, the possibility that the pickup screen has perished and let some debris in (or maybe bits of the mesh/screen itself) that is clogging it.
Posted on: 2009/7/26 22:28
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