Re: 1970 beetle runs fine then suddenly dies
tank lines and carb have been cleaned but i pulled the line off the pum and tirned the car over barly any gas but the pump is 3 or 4 mounths old but i orderd a new 1
Re: 1970 beetle runs fine then suddenly dies
The push rod under the fuel pump should protrude 1/2" at it's highest. Check this measurement. You probably replaced the original pump with the angled newer one which uses a different length push rod.
You really need to measure fuel pressure to test the pump.
You really need a repair manual, I suggest Haynes first, and a dwell/tach meter. These are old but simple cars that were designed to be endlessly repaired. Many small issues will pop up, like bad grounds, that if you pay a shop every time it will be very expensive. However fixing it yourself is very cheap.
jim
'71 SB(DD only 79K(now 84K miles) & '78 FI Westy (project)
PO of '65 Beetle in '69, '70 Crewcab & '70 Ghia in '77
'71 Super inside rear vents now available
http://www.openroad.ca/volkswebbin/view … p?id=85915
PO of '65 Beetle in '69, '70 Crewcab & '70 Ghia in '77
'71 Super inside rear vents now available
http://www.openroad.ca/volkswebbin/view … p?id=85915
Re: 1970 beetle runs fine then suddenly dies
I'm in favor of a fuel system cleanout. The fuel is not being pumped to the carb by a bad fuel pump, or it is being stopped by something else. My father had this same problem, and we got to the bottom of it by removing the fuel tank where we found a coin-sized gasket from the lid of some gas treatment container was plugging the fuel inlet randomly. But don't assume this is cause, your could be very different and the fuel system should be gone though from end to end.
Paul
Re: 1970 beetle runs fine then suddenly dies
I think this is a classic symptom of worn throttle bushings. Runs ok while the mixture is rich, and choke is on, then stalls when throttle plate is open due to too much air leaking past the throttle bushings. Try squirting WD 40 right at the throttle bushing areas and see if the engine picks up.
Re: 1970 beetle runs fine then suddenly dies
I think this is a classic symptom of worn throttle bushings. Runs ok while the mixture is rich, and choke is on, then stalls when throttle plate is open due to too much air leaking past the throttle bushings. Try squirting WD 40 right at the throttle bushing areas and see if the engine picks up.
Re: 1970 beetle runs fine then suddenly dies
ed stanley wrote:
I think this is a classic symptom of worn throttle bushings. Runs ok while the mixture is rich, and choke is on, then stalls when throttle plate is open due to too much air leaking past the throttle bushings. Try squirting WD 40 right at the throttle bushing areas and see if the engine picks up.
I had that problem as well (different symptoms though) and had to compensate by making the idle richer (volume control 5 turns out!). A temporary fix is to put a couple drops of pneumatic tool oil on the shafts with the engine running. Put the drops on a flat screwdriver then touch it to the carb body where the shaft goes in on either side. It seems to restore the bushing seals, or at least make them swell up and seal again. I did that a few months ago until I could replace the seals, but it worked so well I forgot about them.
Paul
Re: 1970 beetle runs fine then suddenly dies
The fuel pump has 3 inch rod in it. When u take the two nuts out lift the pump out & take the rod out, it may be broke & replace. It happened to me it's an easy fix, but to wait for a part, that can be a while.
Re: 1970 beetle runs fine then suddenly dies
The fuel pump has 3 inch rod in it. When u take the two nuts out lift the pump out & take the rod out, it may be broke & replace. It happened to me it's an easy fix, but to wait for a part, that can be a while.