67 ltd hard starts, put in D and motor dies

[Leo]

hey fellas,

...... this is strange.... i start car it dies right away......

i pump the gas pedal to start the car. it cranks over and starts but cant keep idle. i have to put pressure on the gas pedal to keep it from dying. i even have to keep pressure on the gas pedal when i shift into Drive. what sucks more is that i have to add pressure when i drive away so that the car wont die. the thing is, is when the car warms up it idles perfect. i can sit at a stop light all day and have it run idle great.

what is more confusing is when i drive this sexy boat for a while and park it. i give it a few hours and can start it right back up with no problem. it runs idles and drives good. these problems occur on cold/hot days and on flat land.

after i adjusted the points i got great results. the 67 started up great! now that i put a fancy air cleaner the car starts badly.

what do you guys might think this might be?!



leo

[Lincolnmania]

the choke is not working
not sure if the 67 is a thermostatic choke or an electric choke.....would need some pics of the carb

[Leo]

its an electronic choke. where might this choke be on the carb?! is it on the passenger side of carb?! that circle thing?! i will take pictures as soon as i can.

thanks scott mang

[gadget73]

round hockey puck thing. Make sure the wires are hooked up for one, but it sounds like either the thing is adjusted way wrong, or the spring is broken and not pulling the choke and high idle cam into action. See if the parts move freely when you manually move the linkage. There should be a little arm that comes off the hockey puck with a linkage of some sort that pulls the choke flap shut and makes the idle cam drop into position. If its gummed up, clean the linkages off with carb cleaner.

[Leo]

great, i know where and what your talking about. yes the little arm, the flapper stays open and wont shut. i'll check the wires and spring after work. + pictures.

thanks!

[gadget73]

the wires feed power to the heater, which opens the choke up. If its not closing at all, either the spring is broken inside the choke coil, or the thing has been spun all the way to "lean" and it can't pull the choke shut. Could be someone spun it to lean because the heater is bad and won't open the choke too.

[Leo]

pictures of the carberator

[Leo]

[Leo]

now that i pulled the choke off i dont think its an electronic one. there are no wires connected to it. that sonofabitch owner before me lied to me...
wait a minute.. but there isnt a choke pull in the cabin of the car.

[pollock]

That's a thermal choke. See that metal piece below the plastic knob? one of the heater hoses is supposed to be hooked on that, and as the hose heats up, the choke opens. I think.

Not sure what that metal tube is though. Where does the other end of it go?

[Nathan in MI]

You're on the right track, pollock, but some of the details are a bit off. It is indeed a thermal choke, but the heater hoses aren't related. The tube should go down to a "choke stove" on the exhaust manifold, and the heat is transmitted through the tube up to the choke, causing the bimetal spring to move, thereby opening the choke.

[Leo]

i see, so the metal tube actually does something... damn.. it broke off the manifold but its still attached to the choke. as for the rubber tube?! i know it also attaches to the exhaust manifold but it too broke off.
my problem: is that the choke stays open when i start the car... i tried to adjust it today when the motor was cold. i adjusted the choke to close the flapper: the motor cranked but didnt start. i re-adjusted it to what it orginally was. the only way to start the car was to put about 3 sprays of engine starter fluid down the carb. the car started great but when i put it in D it quickly died. i started the car again and got it to run i slammed the shifter in D while adding a large amount of pressure to the gas pedal. The engine was reving high, i let some pressure off the pedal b/c the tranny wouldn't kick into D with the engine reving too high. when i let some pressure go the car kicked into gear and i took off! car drove perfect, idled like a dream. passed up plenty of cars on the freeway.
i went to a mechanic and he says everything sounds good and was very impressed with the cheepie fomoco carb. i told him my situation and he says he'll have to check it with the engine cold tomaro. he says the same thing, "THE CHOKE" might be the culprit.

im concerned that the old tranny is getting beat up with the high rev sudden take offs...

[gadget73]

Some Fords also had a clip on the choke where the heater hose ran. Its still a heat choke, but for whatever reason some had both the exhaust and coolant heat sources.

The rubber hose probably goes to the air cleaner. Usually there is a thermostat valve in the air cleaner that opens and shuts the flap at the end. What that does is switch from warmed air off the exhaust manifold to cold air through the duct. Since many cars have no remaining stove on the manifold, and no duct to the fender it does absolutely nothing useful. If yours is in that state or if you don't have a stock air cleaner, just cap the hose off so its not a vacuum leak.

Sounds like you need to fix your choke setup and probably rebuild the carb. Sometime have a look down the throat of the carb while you work the throttle lever with the engine not running. If you don't see a stream of fuel squirting in the carb as you open the throttle, then the accelerator pump isn't working and thats another reason it won't start. The lack of high idle is the choke not working though.

[Leo]

Sounds like you need to fix your choke setup and probably rebuild the carb. Sometime have a look down the throat of the carb while you work the throttle lever with the engine not running. If you don't see a stream of fuel squirting in the carb as you open the throttle, then the accelerator pump isn't working and thats another reason it won't start. The lack of high idle is the choke not working though.

yes i see fuel squirting into the carb as soon as i open the throttle with the engine off. there is alot play with the flapper. when i move the throttle to wot the flapper doesnt move. when i adjusted the choke to shut (rich) instead of lean. the flapper only moves slightly when the throttle is wot. but the flapper is closed... so i adjusted it to lean and the car barely starts and almost runs.
i agree, the carb might have something to do with it b/c when the throttle is pressed it should move the flapper too. i remember the carb doing this. hmmm
thanks for your imput mangs!

- i know.... i know.... never slamm the shifter into drive when the ol girls is reving high...... i feel like a jerk everytime i do this....

[Leo]

i found this information regarding the engine dying when i shift in D. im not sure if this pertains to my situation.

the line from the brake booster to the transmission is connected and doesn't have any leaks or anything? If it's power brakes and auto it will do that same thing. Idle just fine but the minute you put it in gear it will die instantly. Possible the booster itself has a leak even. If you have to, remove it and plug one end and blow in it to be sure there isn't a leak you aren't seeing in it. Also the little peice of hose that connects the metal tube to the modulator on the tranny could be worn out and just basically sitting there and appear to be connected.

could this be another reason why my idle and take offs are shitty too?!

:err: