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#20531 11/15/2004 6:25 PM | Joined: Nov 2004 Posts: 1 Junior Member | | Junior Member Joined: Nov 2004 Posts: 1 | 1931 stovebolt straight six. Rebuilt fuel pump- the pump does not allow the gas to exit at the other end. I put my finger on the exit port and could not feel a vacuum. Is the arm that rubs against the cam supposed to be taught, in other words are you supposed to use the bolts to secure the tension? I was thinking it might be a broke camshaft.
Any help is appreciated.
Thanks-JMM | | |
#20532 11/15/2004 7:43 PM | Joined: Mar 2004 Posts: 734 Shop Shark | | Shop Shark Joined: Mar 2004 Posts: 734 | Why, does it seem like there's no tension? Like the pump arm's not touching anything?
The last fuel pump I did was my Pontiac and that arm definitely had tension against cam. Had to put the arm in, push arm against cam, push pump towards block with one hand while installing screws with other hand. It's pretty basic so if this is what you're doing, yeah, you may have a worn lobe.
Don't know much about a '31 but, is it possible to accidentally mount the pump with the arm going underneath the cam instead of riding it? | | |
#20533 11/15/2004 10:50 PM | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | Vacuum should be at the inlet side. A slight pressure should be felt at the outlet. Is pump on upside down or lines backward? 
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | |
#20534 11/15/2004 11:43 PM | Joined: Sep 2004 Posts: 235 Shop Shark | | Shop Shark Joined: Sep 2004 Posts: 235 | When you install a fuel pump, you should feel it against the cam. You might have to bump the motor over or turn it by hand to get on the small part of the cam lobe. This will make it easier to bolt the pump in. Take the pump back off to make sure the arm is alright. | | |
#20535 11/16/2004 12:28 AM | Joined: Oct 2004 Posts: 11 Junior Member | | Junior Member Joined: Oct 2004 Posts: 11 | I had a similar problem on Sunday with my '52 6100. Put the new fuel pump on and still no gas up to the carb...shouldn't be necessary to prime it. Took the pump off a couple of times to make sure the arm was riding on the cam correctly...gave up took off the new fuel pump only to discover a length of braided wire fuel line from the tank was plugged due to collapse of the rubber gas line inside. This happened on a truck that had been sitting for 10 years but it was the last thing we thought of. Now I'm going to try the old fuel pump (with the glass dome) and see if it was fine all along!! | | |
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