What's the best way to clean the dizzy? and can it be done in place or does it need to come out?
@peter, that's very smart, I hadn't though about measuring it that way.
I'll try and get to the main jet as well just to remove any chance of the carb being the issue moving forward.
Just to make sure, the correct starting procedure is always using the choke for a few seconds?
Also, another forum member mentioned that maybe the sparks are wrong, I'm pretty sure I've been using the NGK BP6HS plugs, and I noticed the 126 says to use the BP7HS. Until now the BP6HS worked fine (although I admit I've never done many miles with the car in the last years), I don't know if it would make a difference to switch?
Thank you all for your contributions, hopefully I can make the most of them and get the car to start
I too have been having problems with my '67 500F. I've been able to start OK (with choke for a bit), but it would stutter and cutout when I gave it throttle. Thanks to the good folks on this forum, I seem to have cracked the code! What I did:
1. Complain a lot, drink some wine/beer... gripe about it some more... play a few video games to relieve Fiat based rage
2. Replace all Ignition components (points/capacitor/leads/coil)
3. Try to sell the car to my neighbor after it still won't rev. Neighbor's dad tells me to stop trying to get his kid to buy my car
4. Break out the timing light, make sure it's timed correctly at the 1600 RPM idle. Still have troubles
5. Finally pull the carb and replace the jets, idle screw, gaskets and the spacer. Spray out the emulsion tube/etc with carb cleaner
6. Wait for the torrential California rains (surprise!! We're soggy here in Nor Cal the year!!)
7. Replace carb, making sure all is tight/sealed
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8. Forget to reconnect the fuel: spray it everywhere.. whoops!
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9. After 30 seconds of cranking with the choke on, it fires up and idles well with a few hickups
10. Drop the choke after 20seconds or so and DANGIT!!! THE CAR REVS!!!!!!!!!!!!
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11. Drive around the neighbor hood like a madman grinning from ear to ear! Take the win! Kiss the wife! Drink a beer! Yay!
There are still some problems:
- the throttle sticks at wide open. Don't think it's the butterfly but the linkage somewhere (didn't before I rebuilt and I didn't touch the butterfly)
- Pops when I shut it down, going to double check the timing when I get idle adjusted
- See above, need to adjust idle after I readjust the timing... it's a recursive process
TLDR: Go back to the basics. If the carb is new, and the timing is OK. Just start it on the choke (a very normal occurrence, even EFI cars pump a little extra fuel in when it's cold (even on a warm day). Try to drop the choke after 20sec or so and see what happens
Also, don't give up. It'll work. This is a very informative and friendly forum, and they'll get your car going in the end
Good luck and let me know if I can help
Daniel