Hey guys, longtime lurker here. (And complete moron when it comes to cars) I've finally given up scouring threads trying to figure this out, and figured I'd just try to get some help straight from the source lol. So, my 74 Mav has been sitting for about a year, after points issues, then never time to work on due to work, etc. But it's never been in good shape after I got her, I'm just stubbornly trying to fix her. So, I changed the points to the electronic duraspark, everything seems set up right, but won't start. New fuel pump, had the carb cleaned, (the accelerator pump's spring seems worn out or stuck or something) I replaced some fuel lines that were leaking, but still cranks and wont turn over. BUT the distributor still seems strange, I can't adjust the gap, the whole plate on the bottom seems loose (I'll attach a picture). Anyways, any help would be appreciated! Thasks guys!
Duraspark refers to solid state units '75 & up that never used points... What you have is a aftermarket unit that replaced the original points... If that's the Petronix, it isn't going to make the first spark without the black ring installed that's pictured in this link... http://www.cjponyparts.com/pertronix-electronic-ignition-ignitor-single-point-v8-1965-1974/p/PER1/
Yup, I've replaced the coil, sorry, and whoops! I think it was hot spark, that was the brand. And I have that black ring installed, I believe.. (goes around the rotor?)
Yep fits around rotor... If the plate is loose the pivot at approx one o'clock in pict is worn out... Used to be repair kits but these days probably easier to pull you conversion and install in a good or rebuilt dist...
Alright, I figured I might have to replace the whole thing anyways, lol. I've replaced just about everything else. Probably not worth the time, money and effort I've invested, but I'll be damned if this baby kicks my ass lol. I figured though, if you can tell in the picture, that the piece at the top left, looks like it used to have a screw or something attached, but it feels like plastic and like it had been broken off...I assumed I was missing something to tighten the whole thing down with. But still it struggled to life and ran for a little bit earlier today with me just messing with it! It putted around the yard for a bit, but when I threw her in reverse, she died!
I believe that's a single wire used for grounding breaker plate to disty body... That hollow pin is just a guide, its the one I mentioned that isn't supposed to have any slop(something like .003-.004 max)... You can remove the breaker plate and possibly come up with something as a replacement for the plastic pin pivot... Earlier models used a brass bushing and a steel pin for pivot...
Okay gentlemen. According to a coworker who tinkers with old cars, the issue is with the fuel still. I had thought so at one point, because the gas was getting into the bowl of the carburetor, but not being pumped in. So I bought a new fuel pump, no, had the carb rebuilt, no, still not pumping. You can pump the little needle on the accelerator pump by hand, until it finally squirts a little bit, but it acts like it's getting stuck or something when you just try to pump it via the pedal. Again, excuse my ignorance, I'm quite the newbie with fixing this stuff, haha.
OK gotta learn sometime someplace... Open your mind and we'll dump in the info... Assuming you have a 2100 Motorcraft carb... If the shooters inside the barrels( venturi) isn't squirting there may be a problem with the flexible rubber plug(41) that allows gas to be pulled into the pump chamber... The diaphragm(39) then pushes fuel into the small passage ways that feed the squirters... If spring 40 is missing, on wrong side of diaphragm, or reversed it isn't going to pump... If gasket(32), weight(33) or check ball (34) are missing it isn't going to pump... Also if gasket 30 is missing or the hollow screw(29) is plugged it won't squirt... Most usual problem are spring or check ball/weight related...
I've got a single barrel, I don't think that's the same..but the concept of what could be wrong is still the same, I assume? The friend who rebuilt it, said that it looked like it had been done before, scratches all over it, etc, so I don't know...maybe I'll just buy a whole new carb offa ebay lol
Oops sorry, I sometimes forget there were engines other than 302 in these cars... Dunno much about the single barrel carbs, only worked on those as a last resort...
