jvandyke

Yep, except that we had it dialed in for the last month. All systems go. Weird. I'm going to proceed under the assumption that it's a carb issue, and tear into it.....again. Something maybe just slipped out of adjustment, vacuum leak, or some dirt in a passage............maybe.

It's pumping gas into the carb though. I'm thinking of just getting a full rebuild kit anyway, of course, you know what they say, 90% of all carb problems are ignition problems! This was true on the '62 Galaxie I've been working on, Rebuilt the carb to end up with a new distributor! Tonight we swapped out cap and rotor. I've read vac, adv. going bad can do weird things. It would barely idle and was rough, it started suddenly, seems like it's missing to me. It was running quite well for weeks then would barely idle and die on touching the gas, limped home and here we are trying to figure it out.

It's been running pretty good until a couple days ago, suddenly any attempt to apply throttle and it dies. We pulled the primary bowl, cleaned, did a little ignition maintenance, new plugs, cap, rotor, just because we should have anyway. No impact. Something went south suddenly. Thoughts?

moved to 68 primary, 76 secondary, also found the fast idle adjustment screw had been bottoming out on the intake (seemingly stopping the primary butterfly from ever achieving full throttle position, hard to believe). Re-worked that. Goes like stink. Electric choke now releases the butterfly from high idle like it's supposed to. I think we're making progress.

my kid (17) either inherited or absorbed his old man's car infatuation, a couple weeks ago, while he was trolling craigslist for his usual favorites, he comes across an X-drag car (streetable), '72 with a zz4. Was made in Carson City back in '96/97, somehow found its way to Michigan and into our greasy little mitts. It's pretty far from it's former glory, a little (VERY little by Michigan standards) rust but ratty interior and tons of flaws, but she runs and goes like stink....most of the time, anyway First question and most pressing: It's got a zz4 with a Holley 670, stumbles very badly on tip in, drops to idle, usually recovers, you can tease it along. Gets better when warm. So far research shows many jet up a bit but not sure what's in there now, going to pull it apart and see. (a few minutes later: 65 primary, 68 secondary, not that I would know but that seems kinda small found this thread that suggests 68 primary, 76 secondary) running an automatic, TH700r4 I think. B&M Hammer shifter that is very FUBAR'd, hard to find a gear, once in she shifts fine. I plan on running through the set up procedures and adjustment may solve it. Anyway, happy to find this resource and hope to glean pearls of wisdom from y'all. We have a fascinating collection of old receipts (including a stack of drag times) so have an idea what's in there but who knows this far down the road, ya know?