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EFV-8 Club Forum / General Ford Discussion / Carburator or what?

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Posted By Discussion Topic: Carburator or what? -- page: 1 2     sonof19 04-01-2010 @ 7:19 PM reply profile send p.m. Member Posts: 34 Joined: Oct 2009 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 Pauls39 04-01-2010 @ 8:25 PM reply profile send p.m. Member Posts: 81 Joined: Oct 2009 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. Wolfie 04-01-2010 @ 10:25 PM reply profile send p.m. New Member Posts: 144 Joined: Oct 2009 Check your fuel filter and check for rust. I had this problem and it was a rusty tank which I then replaced. ford38v8 04-01-2010 @ 10:34 PM reply profile send p.m. Senior Posts: 2735 Joined: Oct 2009 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 TomO 04-02-2010 @ 7:24 AM reply profile send p.m. Senior Posts: 7243 Joined: Oct 2009 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 sonof19 04-03-2010 @ 9:20 AM reply profile send p.m. Member Posts: 34 Joined: Oct 2009 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 supereal 04-03-2010 @ 1:11 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 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. sonof19 04-04-2010 @ 6:35 PM reply profile send p.m. Member Posts: 34 Joined: Oct 2009 Hey supereal do you know the address or ph# for C&G I don't know who they are? thanks Son of 19 Wolfie 04-04-2010 @ 9:47 PM reply profile send p.m. New Member Posts: 144 Joined: Oct 2009 C&G Early Ford Parts toll free phone number is 800-266-0470 and you can shop on-line at www.cgfordparts.com. sonof19 04-05-2010 @ 3:52 AM reply profile send p.m. Member Posts: 34 Joined: Oct 2009 Thank you sir.ordered a new fuel line/flex line today.What a great club.son of 19

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