I messed up... Help?
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Joined: May 2013
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From: Anchorage, AK
I messed up... Help?
Okay, so here is my situation. Before I take this to a shop I was wondering if I could get a few opinions. I recently purchased a 1979 Ford F150 with a 351M. I did an oil and coolant change, installed a Weiland Action+ Intake Manifold, Holly 600CFM four barrel with vacuum secondaries, FelPro valve covers and breathers, and removed all the EGR components. FelPro gaskets all around. I spent a few days tuning the carb and distributer. Just installed a new battery, battery cables, and spark plug wires. I took it out for the first time today. Big problem. It'll start up and idle just fine. Smooth running down the driveway. But as soon as I give it gas to pull off, it pops and sputters 
. I really can't explain the exact sound. Maybe a quiet backfire? At first I thought I blew a gasket. But I checked all the gaskets. No problem there. Running 90 octane so I don't think it's a knock, but I don't know. Any suggestions?
. I really can't explain the exact sound. Maybe a quiet backfire? At first I thought I blew a gasket. But I checked all the gaskets. No problem there. Running 90 octane so I don't think it's a knock, but I don't know. Any suggestions?
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New User
Joined: May 2013
Posts: 5
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From: Anchorage, AK
THANK YOU!!
Thanks guys! I timed it by max vacuum in manifold, so I knew that wasn't it. But the distributor is stock so I was afraid I was going to have to buy a new one. But while looking at build pictures I found I swapped two spark plug wires!! Even though I labeled them. Thanks again!
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New User
Joined: May 2013
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From: Anchorage, AK
One quick question, why is the engine able to idle with plug wires switched around? O.o
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Cargo Master
Joined: Apr 2010
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From: Billings, MT
Because you still have six other cylinders firing on time and making power.
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