Regarding tracing ignition wires when they are in the proper brackets.When I installed my wires in the brackets I drew myself a diagram for each side.I marked what cylinder each wire was for in both the brackets that bolt under the exhaust manifold and what wire was which on the rear  brackets.In other words I have 4 diagrams.Tacked it up on my garage wall.Now if I need to figure which wire is for which cylinder its easy.I am thinking about the problem in this topic.It may well be ignition related BUT is it possible its starving for fuel?Check everything else suggested especialy the coil first.Doesn't fix the problem have a look at fuel system.

  

Did it have miss before putting the parts on? If not very likely have a crossed wire as mentioned. If it had miss before replacing parts and you changed it one wire at a time the previous owner/mechanic may have got one crossed also and you just repeated the oversight. Doesn't cost anything to run firing order first then go with coil. Sounds like one of them may be the problem. I know if they are in the wire brackets it is a pain to run them. Here is link http://www.ford-y-block.com/tuneup.htm .

The two times I had a problem like this, the culprit was the coil. I also noticed you changed a lot of parts, but not the coil, and it's not a expensive part to buy.

Túlio Lazzaroni "FORD", Florianópolis SC Brasil.

'74 Ford Galaxie 500 292 V8

'82 Ford Galaxie Landau 302 V8

'98 Chevrolet S10 4.3 V6

'01 Ford Focus 1.8 Zetec

I agree with the coil diagnosis , I have seen those exact symptoms cured by a new coil

And maybe something so simple as the leads not being pushed into the dizzy cap far enough.. I was suprised how far they go in. Put a timing light on each one for a quick check



"Came too close to dying to stop living now!"

Go back thru your ignition wires and check to make sure you have them on the correct cylinders. I suspect it's wired incorrectly.

Frank/Rebop

Bristol, In ( by Elkhart) 

It seems we have all experienced these symptoms at one time or another. My experience with these symptoms turned out to be the point gap was too close. Check your point gap with a dwell meter if you haven't already.

Failing that as Birdman and others have said it will be ignition problem somewhere.

Regards

Rick - West Australia
Do Y Blocks Downunder run upside down? Gravity Sucks!!

Hi Larry,  I've had cars that behaved like you describe- it turned out to be a bad ignition coil in a couple of cases.  The other one was a bad condenser, even though you have a new one, try a different condenser.  In another case a wire had been pulled off of the coil resistor, and the wire was just barely touching the terminal of the resistor.  Hope this helps- good luck!  Nick Brann - K.C., MO

the car misses a little in park.when you rev it up in park it doesnt break up or nothing.it has a new distributor (57 ford one)it also has a new vacuum advance on it,new points,condensor ,cap and rotor.the plugs and wires are also good.we did a compreeion test and it was good.soon as you put it in drive and start down the road it starts missing really bad and breaking up you can run about 35 mph tops and when you come to a hill 10 mph tops.hope this helped everybody out.thanks everone for all your sugestions so far.thanks larry

larry

My 56 played up big time when it still had the advance-o-matic dizzy and a hole in the diapham. What distributor have you got and have you replaced/checked your vac advance diapham?

Grizzly (Aussie Mainline)