| sonof19 | -- 04-01-2010 @ 7:19 PM |
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Went for a drive today 48 v8 and my car always run's great. but today after about 5 miles it acted like I was running out of gas. then stoped running. I tryed to get it started with no luck them I pulled the choke all the way out and it started and the only way I got back home was to pull the choke out all the way home.any ideal what to look for.thanks Jim
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| Pauls39 | -- 04-01-2010 @ 8:25 PM |
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Check the spark at the plugs to eliminate any electrical problems like a weak condenser or failing coil. The spark should be bright and blue. A faulty condenser will often fail within the first 5 minutes of driving. After cooling off a bit it may run again, but require a richer mixture to get the job done. If the spark is OK it is probably time to rebuild the carb. Dirt may be blocking the jets, or passages.
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| Wolfie | -- 04-01-2010 @ 10:25 PM |
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Check your fuel filter and check for rust. I had this problem and it was a rusty tank which I then replaced.
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| ford38v8 | -- 04-01-2010 @ 10:34 PM |
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sonof19, The fact that your engine ran only with the use of the choke tells me that your problem is caused by a failure of the fuel delivery to your carburetor. The choke assisted the fuel pump by sucking gas that the pump could not deliver otherwise. This failure may be a clogged fuel line, a collapsed flex line, or dirt/rust particles clogging your fuel pump valves. It may also be an air leak at some point between the tank and the pump. Remove the gas line from the carburetor and direct it to a coffee can. With the ignition off, crank the engine over to confirm that the pump cannot deliver a strong stream of gas. If you have worked on any part of the fuel system from tank to pump recently, you very well may have introduced an air leak. check and tighten those fittings you worked on. Remove and replace the flex line, as it is likely at least partly to blame, as the new gasoline attacks the old rubber lines. Fuel resistant flex lines are advertised in the V8 Times. Blow through the gas line back to the tank to blow out any blockage for a temporary fix. You may need to drain and flush your gas tank, and/or replace the fuel line if it has internal rust. The fuel pump itself may also be to blame, so a rebuild of that unit may be called for. A fuel filter before the fuel pump, not after, will trap any rust particles that get that far in the future. The gasoline of today absorbs moisture due to it's alcohol content. The gas you buy at the station may have a water content before it even enters your tank. Water causes rust, and therein is the main problem today with old cars. A preventative that helps if the system isn't too badly rusted is the use of Marvel Mystery Oil, about 4 oz per tankful. This MMO helps coat the system to prevent rust, while at the same time helps prevent sticky valves, also caused by the new gas. Alan
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| TomO | -- 04-02-2010 @ 7:24 AM |
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I agree with Alan that your problem is fuel delivery. Another cause of this problem is the fuel line from the tank. These do rust from the inside and plug up. I would disconnect both ends of the line before blowing through it with compressed air. Direct the tank end of the line into a container, so you can see the type and amount of debris clogging the line. If your tank is rusty on the inside, you should have it boiled out at a radiator shop, and then use one of the tank coating processes supplied by vendors like Bill Hirsch or Eastwood. If your line is original, it is probably bad. Order a replacement from Roy Nacewicz or Narragansset Reproductions. The lines form the other vendors may not be long enough for your car. Tom
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| sonof19 | -- 04-03-2010 @ 9:20 AM |
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I would like to thank everone for there advice. and this is what I have done so far. blowed out the lines they were clean/checked the flex line also clean/cleaned the glass bowl. my carb is new/my tank is new/I get a vacuum gauge reading of 15to16 I know it should be 18-21 and I had that same reading before the first post.what do you think is holding it at this reading? and a new set of plugs the old ones were black with soot.after I put the lines back on the glass bowl was full and it started right up. now for a road test.I will keep you posted. son of 19
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| supereal | -- 04-03-2010 @ 1:11 PM |
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If your gas line between the tank and the firewall flex line is original, it is time for a new one. I'm not sure the "new gas" is responsible, but we have found that the old copper coated steel lines are rusting shut, or almost so. They are just big enough, in the first place. I could blow air thru mine, but it still caused the car to miss and stall. A new one is available from C&G for $20, and comes with the fittings on each end installed. I tried everything else before I found the problem because it mimics ignition problems and others.
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| sonof19 | -- 04-04-2010 @ 6:35 PM |
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Hey supereal do you know the address or ph# for C&G I don't know who they are? thanks Son of 19
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| Wolfie | -- 04-04-2010 @ 9:47 PM |
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C&G Early Ford Parts toll free phone number is 800-266-0470 and you can shop on-line at www.cgfordparts.com.
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| sonof19 | -- 04-05-2010 @ 3:52 AM |
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Thank you sir.ordered a new fuel line/flex line today.What a great club.son of 19
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| 1934 Ford | -- 04-05-2010 @ 6:38 AM |
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Had the same problem a last month, turned ou to be an air leak in the fuel line where it came out of the tank. Then two weeks ago the same symptoms occured to a 39 Coupe on the Sentimental Tour in Texas. It was an air leak at the glass sight bowl on the 47 style fuel pump. Air will fool you. Check it out.
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| sonof19 | -- 04-05-2010 @ 8:08 AM |
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Thanks 1934 ford. I think I have narrow it down to a stop up gas line. went for a ride on easter after fiddleing with everthing in the fuel dept. and it ran just like new then I put some gas in it as soon as i pulled out it started cutting out again and then ran great for the next 5 mi's. so I ordered a new gas line from tank to fire wall and a flex line to fuel pump. son of 19
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| 1934 Ford | -- 04-05-2010 @ 2:55 PM |
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While you wait for the new line, you should clean your old one out with air pressure (Low pressure) by disconnecting it at the fuel pump and blowing air from the tank into a glass jar. If it's not dirty, blow the other way to get crud away from the pickup in the tank. Then drive it. If it does it again, you may be sucking air. After I did every thing you and I and others have suggested I took the Stomberg apart and cleaned it with Gumout.(the cheap imtation won't do it) I Found no visable dirt, but the clean carb made another big difference in how it ran. I think the new gas fouls the jets and starves the engine of enough gas. I hope you find your problem before you have to replace the line. That's a hard job on a creeper.
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