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  #16 (permalink)  
Old 04-28-2014, 12:27 PM
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. Sounds like classic case of secondaries still opening at too low an RPMs and/or too lean... (assuming ignition timing OK...) giving engine stumble when flooring it...

. What's cam size and compression ratio?

. If electronic ignition, bad module inside distributor can do that dying trick ... I had that problem on 9-11-2001... engine would start, towed back home, but kept leaving me stranded out on the road... 23 year old module crumbled in my fingers as I removed it... can't believe it ran at all...

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Old 04-28-2014, 06:16 PM
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Quote:
Originally Posted by BuzzLOL View Post
. Primary jets sound enormous... but, I'm only used to Holley carb.s... where it would be about #66's... and secondary jets usually lots bigger than primary jets because of the Holley primaries booster power valve...

. Sounds like classic case of secondaries still opening at too low an RPMs and/or too lean... (assuming ignition timing OK...) giving engine stumble when flooring it...

. What's cam size and compression ratio?

. Could also be vacuum leak at gasket under carb. and/or vacuum hoses not all re-hooked up...

. Is this electronic or points ignition? My distributor module did the same thing when it was going bad in '78 Ford 351M at 23 years old on 9-11-2011... got it started... would die and strand me out on the road... then repeat... the module was so old and rotten it disintegrated in my fingers as I removed it... can't believe it ran at all...
The Edlebrock carb is a Carter AFB clone that has metering rods in the primaries but not in the secondaries. So whe calculating the effective flow area of the primaries the diameter of the metering rod has to be subtracted from the jet size. The metering rods never come out of the jets they mesh into so the fuel flow never sees the full jet size. So this jet sizing will look odd compared to a Holley. 4 or 5 decades ago I tried to run a pair of AFBs on my FE big block and finally gave up and went back to Holley's. I could even get a Q-Jet to run on my daily driver Mustang 302 but never could get an AFB to settle down on that either.

Yeah, Ford electronics leaves a lot to be desired.

Bogie
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Old 04-30-2014, 07:15 PM
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Buzzlol, it was regularly points but converted it to accel's
Point eliminator. Also, the voltage going to the + of the coil jumps around in the 8- 14 volt range.
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Old 05-06-2014, 01:42 PM
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. Volt meter will give strange readings at coil with engine running...
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  #20 (permalink)  
Old 05-06-2014, 01:44 PM
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. Find the problem yet?
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Old 05-08-2014, 07:09 PM
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Hey all, quick update the cause of my truck dying was my accel coil and point eliminator false. The bogging was the stupid airflap set wrong. Needless to say, she's running good.
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Old 05-08-2014, 10:37 PM
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Sounds like a classic ford duraspark box on the fritz, they are cheap to buy.
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  #23 (permalink)  
Old 05-09-2014, 11:07 AM
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. LOL! Give me one point for the airflap/secondaries being the OP's problem... he said above the accel ignition parts weren't the problem...

. On the other hand, I think my DuraSpark box died yesterday after 'only' 36 years... I'll try changing it in a bit... my ignition pickup in the distributor died 9-11-2001...
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