A: There are so many issues that can be brought up that this covers. Spark: Bad vac advance or sticking mechanical. Dist shaft throwing grease splotches between the points (always lube the wear bar on the points, not the dist lobe!), misaligned points, dropping voltage or weak coil (I just put a '77 Mopar coil on my points controlled '73 J400 for a BIG power/easier starting difference!) Timing too far retarded. (one other nasty that just happened to me on my '90 E350 cube van with 460: sheared dist gear roll pin that kept me from selling at today's swap meet I had been planning all year to go to!) Fuel: Wrong/sticking power valve, vacuum leak disrupting fuel flow, wrong jets. Clogged fuel pump inlet (I add a filter before my pumps in all my AMCs except the in-tank EFI models) Mechanical: Sloppy timing chain, cam walk (a very bad thought!), too tight of valves. From: "JOE FULTON" <piper_pa20@xxxxxxxxxxx> To: <mail@xxxxxxxxxxxx> Sent: Sunday, September 25, 2005 6:59 PM Subject: 304 Missing > I have been driving my 73 Javelin some. 304/auto. I > just finished a restification project on it. I did > rebuild the carb and put new distributor cap, points, > condenser. I have timed it, etc. > > It idles well and runs OK at lower speeds but really > stumbles either when you put your foot in it or almost > anytime above 50 or 55 mph. > > It has the stock Motorcraft 2100/2150 carb. All vacuum > lines have been replaced and I am pretty certain they > are routed correctly. I did replace the power valve > when I rebuilt the car due to a very rich idle > condition. > > I plan to check the timing again tomorrow, but any > other suggestions would be appreciated. > > Joe Fulton > Salinas, CA