About every carb I have has a worn shaft. It causes it lean condition.
On the Quadrajet it makes the throttle hang up which is exciting in the rain!
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| Author: | Rug_Trucker [ Fri Jul 29, 2011 10:32 am ] |
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About every carb I have has a worn shaft. It causes it lean condition. On the Quadrajet it makes the throttle hang up which is exciting in the rain!
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| Author: | Ross [ Fri Jul 29, 2011 11:53 am ] |
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How do you fix the throttle bushings? Cody |
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| Author: | Fopar [ Fri Jul 29, 2011 12:38 pm ] |
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Machine shop can do the job, I have heard they can use valve guides (bronze). Richard |
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| Author: | Rug_Trucker [ Sat Jul 30, 2011 12:00 am ] |
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You can actually buy bushing from a carb supply place. I have rebuilt a couple where I just threaded the shaft on the passenger side and put in a screw with Loctite, washer and a plastic washer. A slant racer showed me how to bush it with a straw from McDonalds! I used a straw from Sonic. Tested it in a jar of gas. |
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| Author: | Ross [ Sat Jul 30, 2011 9:21 am ] |
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Hah nice! How long would a straw last? I just need a temp fix for maybe a week till I get another carb. Cody |
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| Author: | Rug_Trucker [ Sun Jul 31, 2011 2:33 am ] |
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Might just poke in some wheel bearing grease around it and try that. |
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| Author: | emsvitil [ Sun Jul 31, 2011 1:05 pm ] |
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Quote: Hah nice! How long would a straw last? I just need a temp fix for maybe a week till I get another carb.
Cody Not long. Gasoline does nasty things to some plastics. Put a straw in some gas to see what happens.... |
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| Author: | emsvitil [ Sun Jul 31, 2011 1:06 pm ] |
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Hobby shops have thin-walled brass and copper tubes........... |
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| Author: | Aggressive Ted [ Sun Jul 31, 2011 2:27 pm ] |
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Cody, When you had the 1945 apart, what size is the main jet? How old are your spark plug wires? Ever look under the hood with no light (late at night with no street lights) to see if any are arcing? |
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| Author: | Ross [ Sun Jul 31, 2011 5:07 pm ] |
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The jet in the 1945 is #66 it's what was in there when I got it. There is I think a 57 in the 1920. I did look under the hood at night at my friends house when working on it with all lights off and pitch black (he lives kind of in the woods) no arcing or blue streaks running the wires. My friends dad said it is probably the ignition module. I snagged one off of a chevy at the yard, it runs a little better but still hesitates and pops at low speed but it's much easier to start. Could it be my coil? I fixed the vac leak for now but it still doesn't run right. Cody |
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| Author: | Rug_Trucker [ Mon Aug 01, 2011 9:26 am ] |
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Quote: Quote: Hah nice! How long would a straw last? I just need a temp fix for maybe a week till I get another carb.
Cody Not long. Gasoline does nasty things to some plastics. Put a straw in some gas to see what happens.... Key words........"temporary fix." Carb supply places sell bronze bushings. |
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| Author: | olafla [ Mon Aug 01, 2011 7:53 pm ] |
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Ross, take look at Carb Junkys Carburetors' Throttle Shaft Bushing Tool Repair Kits on eBay. Olaf. |
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| Author: | Ross [ Mon Aug 01, 2011 10:10 pm ] |
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Thanks Olaf. This is a thought that just came to me. With the low compression readings I posted earlier, would that mean a rebuild is in the nearish future for my engine? Would that be worn rings? Cody |
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| Author: | olafla [ Mon Aug 01, 2011 10:18 pm ] |
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Ross, '78 factory manual says: Minimum compression with engine warm, spark plugs removed, wide open throttle: 100 psi Maximum allowed variation between cylinders: 25 psi Olaf. |
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| Author: | Ross [ Mon Aug 01, 2011 10:23 pm ] |
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That's what my factory service manual says too. So once it goes below those specks it time to rebuild? Cody |
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