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#30821 03/20/2004 7:17 AM | Joined: Feb 2004 Posts: 13 New Guy | | New Guy Joined: Feb 2004 Posts: 13 | I've got a centrifugal advance distributor on my '54 GMC COE with a 270 in it. Anyone have any words of wisdom on how check if this thing is working right?
I've just put a rebuilt updraft Zenith on this thing and it'll start and idle great, but bogs down under any load.Got a good fuel pump, clean lines and new gas. Any ideas on where to go next?
Thanks
Stevo | | |
#30822 03/20/2004 7:28 AM | Joined: Feb 2004 Posts: 29,771 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,771 | Is the carb main jet adjustable from the outside, or do you have to swap jets? It sounds like it's running lean in the main power system, and needs a little more gas. To check the centrifugal advance, remove the distributor cap, and see if you can move the rotor a little against spring tension. If the rotor won't move a few degrees with a little effort, the centruifugal advance is probably rusted up and can't advance. Remove the distributor from the engine, and take the plate out of it where the points mount. You should find a couple of weights and springs. This assembly should move freely, and as the weights swing out, the cam that moves the points should rotate a little. Clean it up, check for wear, and repair or replace anything that's worn. Reassemble, and it should be OK. I'll bet it's fuel-related, rather than advance, though!
Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
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#30823 03/20/2004 4:25 PM | Joined: Feb 2004 Posts: 13 New Guy | | New Guy Joined: Feb 2004 Posts: 13 | Originally posted by Hotrod Lincoln:
Is the carb main jet adjustable from the outside, or do you have to swap jets? It sounds like it's running lean in the main power system, and needs a little more gas. To check the centrifugal advance, remove the distributor cap, and see if you can move the rotor a little against spring tension. If the rotor won't move a few degrees with a little effort, the centruifugal advance is probably rusted up and can't advance. Remove the distributor from the engine, and take the plate out of it where the points mount. You should find a couple of weights and springs. This assembly should move freely, and as the weights swing out, the cam that moves the points should rotate a little. Clean it up, check for wear, and repair or replace anything that's worn. Reassemble, and it should be OK. I'll bet it's fuel-related, rather than advance, though!
Jerry | | |
#30824 03/20/2004 4:26 PM | Joined: Feb 2004 Posts: 13 New Guy | | New Guy Joined: Feb 2004 Posts: 13 | Originally posted by Hotrod Lincoln:
Is the carb main jet adjustable from the outside, or do you have to swap jets? It sounds like it's running lean in the main power system, and needs a little more gas. To check the centrifugal advance, remove the distributor cap, and see if you can move the rotor a little against spring tension. If the rotor won't move a few degrees with a little effort, the centruifugal advance is probably rusted up and can't advance. Remove the distributor from the engine, and take the plate out of it where the points mount. You should find a couple of weights and springs. This assembly should move freely, and as the weights swing out, the cam that moves the points should rotate a little. Clean it up, check for wear, and repair or replace anything that's worn. Reassemble, and it should be OK. I'll bet it's fuel-related, rather than advance, though!
Jerry | | |
#30825 03/20/2004 4:27 PM | Joined: Feb 2004 Posts: 13 New Guy | | New Guy Joined: Feb 2004 Posts: 13 | Originally posted by Hotrod Lincoln:
Is the carb main jet adjustable from the outside, or do you have to swap jets? It sounds like it's running lean in the main power system, and needs a little more gas. To check the centrifugal advance, remove the distributor cap, and see if you can move the rotor a little against spring tension. If the rotor won't move a few degrees with a little effort, the centruifugal advance is probably rusted up and can't advance. Remove the distributor from the engine, and take the plate out of it where the points mount. You should find a couple of weights and springs. This assembly should move freely, and as the weights swing out, the cam that moves the points should rotate a little. Clean it up, check for wear, and repair or replace anything that's worn. Reassemble, and it should be OK. I'll bet it's fuel-related, rather than advance, though!
Jerry | | |
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