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06-02-2013, 12:52 PM | #21 |
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Re: Please help, any advice?
I know a good toe guy!
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06-02-2013, 12:57 PM | #22 |
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Location: Winchester Bay OR
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Re: Please help, any advice?
Had a diesel dump truck that would just intermittently die, some times 6 months apart, finally after a couple of years we found somebody had filled a baggie with diesel and put it in the tank, it would just float around until it plugged the fuel intake, die, and let go
just saying ;/ |
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06-02-2013, 01:10 PM | #23 |
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Re: Please help, any advice?
is the fuel line installed correctly into the carb and not plunged into the screen?
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06-02-2013, 01:33 PM | #24 |
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Re: Please help, any advice?
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06-02-2013, 02:12 PM | #25 |
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Re: Please help, any advice?
I know you said you removed the gas cap for a short period . Might want to loosen cap and run for longer period . My car did the same as yours. Had a gas cap that would vent and then would not vent depending how the hole in the gasket lined up with the hole in the cap when you tightened up the cap .
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06-02-2013, 02:24 PM | #26 |
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Re: Please help, any advice?
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06-02-2013, 02:25 PM | #27 |
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Re: Please help, any advice?
Wow what a mess. I would try a loaner carb from some one else and if you could borrow a distributor I would try that too. I think it's electrical myself.
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06-02-2013, 02:34 PM | #28 | |
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Re: Please help, any advice?
Quote:
The screen in the carb is new, clean, and no debris in the bowl. I have a new screen in the tank, the tank is recently sealed, and examined with an explosive proof flexible fiber optic scope. No sand, no debris. The fuel line is correctly attached to the carb, and with the lower section removed the float is free, and the float valve provides full flow when the float is down, and no flow when the float is up. |
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06-02-2013, 02:43 PM | #29 |
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Re: Please help, any advice?
Seems to me, "Two Nuts" and "Baby" is a carb doner for a few hours!
Is Baby a M or FM? Just Wondering? Beware bad weather is on its way. |
06-02-2013, 02:44 PM | #30 |
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Re: Please help, any advice?
Could be a condenser problem exasperated by adjusting with the GAV.
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06-02-2013, 02:48 PM | #31 | |
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Re: Please help, any advice?
Quote:
I feel that a vapor lock would not allow gas to drip out of the carb when I am having this issue. A vapor lock would prevent gas from coming out. When this happens and I pull over it idles fine and smooth, and you can watch gas drip out the air intake. Once you try to move it, you have the fight of your life with no power. If you choke it, it smooths out 80%. enough to try to get home but you have to run so rich the engine overheat. |
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06-02-2013, 02:50 PM | #32 |
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Re: Please help, any advice?
If the distributor is using points and condenser, I recommend you check the point gap. New cam followers wear as they rub on the cam and burnish in, even with cam grease used. I go in and adjust new points back out to spec a few times in the first few hundred miles. Eventually the follower stops wearing down so fast.
Yes, as odd as it sounds, points that are not open enough can be compensated for with a richer mixture, to a point. You might also try a new condenser. They are cheap and easy to swap out. Normally I don't support throwing new parts at a problem, but there is no easier way to test for a bad condenser than to put in a new one. We have also had reports of bad connections inside the distributor where a "new and improved" breaker plate eliminates the little wire between the two plates. See if you are using one of them in there. The poor connection makes the ignition cut in and out. I also know that screwing the pop-out cable into the distributor housing too far will cause intermittent ignition cut out conditions. Count the turns and don't go more than about 3 or 4. Don't screw it in tight. Does your ammeter needle jump around when the engine starts acting up? Good luck with this. I know how frustrating this sort of thing can be.
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06-02-2013, 03:00 PM | #33 |
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Re: Please help, any advice?
Have we got this right?!?!?... fuel is dripping out of the carb but the running improves when you enrich the mix with the GAV/choke?!?!? .
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06-02-2013, 03:01 PM | #34 |
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Re: Please help, any advice?
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06-02-2013, 03:24 PM | #35 | |
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Re: Please help, any advice?
Quote:
I will re-gap the points and see what changes. The problem I have is that the car runs great for 3 days, then this, then better, then bad. It might last a minute, now it lasted 45 minutes. So it is very hard to nail down, but I am getting some great input, this site is great. Thank you for you assistance |
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06-02-2013, 03:26 PM | #36 |
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Re: Please help, any advice?
[QUOTE=Jim/
Does your ammeter needle jump around when the engine starts acting up? Good luck with this. I know how frustrating this sort of thing can be.[/QUOTE] No, ammeter is unchanged |
06-02-2013, 03:39 PM | #37 | |
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Re: Please help, any advice?
Quote:
That made us think of a stuck float or valve, but every time I check, it works fine. At first just a little choke would smooth it out, yesterday I needed full choke, and ran so rich I overheated. Today it starts fine. As I have said, I am trying all the things people are sending me, but I agree the test is to swap out the carb. My work schedule will prevent that for over 2 weeks. Thank you for helping, I'm trying every thing. I'm going to try valium next, lots of it. |
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06-02-2013, 03:50 PM | #38 |
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Re: Please help, any advice?
I can see that the responses are going back and forth, fuel - ignition. In my experiences, "bucking" is caused by intermittent ignition. I would direct my efforts in that direction, even though you see fuel dripping. You may have more than one problem.
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06-02-2013, 04:07 PM | #39 | |
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Re: Please help, any advice?
Quote:
I think the need for choking and the dripping carb are red herrings: have you always been choking it before you see the drips? It takes very little choking to make an A carb drip! A weak spark will have an easier time igniting a rich mixture, although it will be very inefficient--just like when you choke it for a cold start. Also, enriching the mixture is a common trick for making motor run cooler, not overheat (more heat is absorbed to vaporize the fuel). I've seen this sort of thing five times. Three times it was an intermittently bad ignition switch. The fourth time it was loose battery terminals. Have you tried the jumper wire directly from battery to ignition, as someone suggested earlier. Also, if you can ever get it idling well in your driveway, try jiggling everything to see if you can bring it on--all connections, terminals, distributor, etc. The fifth time it was a bad distributor body being shorted to by a too-close spark plug strap. BUT, it could be anywhere in the primary or secondary ignition circuits--maybe something as simple as a loose nut on the ammeter connection. Do not place any faith in the fact that some part is "new" or has been recently rebuilt, even if it's been done "professionally". Experience teaches that this is more of a red flag than a comfort--sad to say. It's not like going to a real dealership repair service. With a recent restoration, every single thing is in play. Steve Last edited by steve s; 06-02-2013 at 04:17 PM. |
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06-02-2013, 04:08 PM | #40 |
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Re: Please help, any advice?
If you have gas running out the air intake, it is the carb.
That does not happen, unless there is to much gas, from chocking, or otherwise. The float valve could have a defect, or a crack in the casting. Anything Electrical, won't make the carb. overflow. Switching carbs will do it. |
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