cold miss

[Patf10]

new engine, hei dizzy. I have been getting a cold miss. Last time i was home i put a timing light on #1 plug wire as usual and i wasnt getting a consistan light. Once the jeep warms up it seems to run fine. so im not sure if its a fuel problem or what. Other wires i was, so i am suspecting that i may have a bad wire/plug. i also get a little sputtering under load at about 2000 rpm, im thinking that its more fuel in that situation.

[rollen dean montoya]

as for the cold miss check the all the plug wires and make sure you don't have any burn thru's. as for the sputtering under load not sure about that one but i would check the pressure
coming from the fuel pump to carb.

[tufcj]

I had the same problem on my Jeep. Turned out to be a cracked porcelain on a plug. Ran fine when hot, but had a dead miss if you put any load on it cold.

Bob
tufcj

[Patf10]

thanks guys i think im gonna check all those things out. Im also thinkin about getting a set of wires where i cut them to lenght. any good kits/ cheap/ that fit well. im running ford v8 wires and the fir kinda sucks

[ironman_gq]

I got chevy V8 wires. one of those universal cut to length kits but I'm also running an HEI dizzy. they fit pretty well a few of the wires are a little shorter than they should be but it works.

[AMX69PHATTY]

If you still have a socket style cap, you can get AutoLite wires
at Advanced Auto Parts for $25 made to length.
AutoLite Part #96074 are "Proffesional" Series 7mm
and Part #86074 are "Pro-Fit" 7.5mm.
These are those listed for AMC's from '68 to '76, strait cap boots.
Set actually comes with (10 ) Leads including coil wire.
AutoLite aso lists #96627, #96628, #96631 as for AMC/Jeeps
but the #96074 & #86074 sets are the longest.
All AutoLites #86xxx sets are 7.5mm Pro-Fit & #96xxx are 7mm Proffesional.

[Patf10]

oh forgot to mention im running a hei distributor.

oh and where do most people run their vaccume advance. i have mine pointing straight forward. so the little nipple sticks out between the power steering belt. then i have a 90* bend for clearance.

[AMX69PHATTY]

Vacuum Advance should be positioned crossways
pointing towards Drivers side or a little back towards firewall.
Number 1 on the cap should be at pretty much front and center.

[Patf10]

yea i have #1 towards the front but my hei it didnt seem like there was room to point the advance any other way and still be able to turn the dizzy

[Patf10]

figured out the miss problem, carb was just a little loose and it mush have been sucking air until it warmed up and expanded.

also i was wondering if anyone has any pics of their HEI setup. Id like to see how everyone has wires routed and where the advance goes.