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Old 05-15-2014, 06:56 AM   #1
FordCustom
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Default 8BA, pops and backfires but no start.

I am thinking it's just out of time possibly, but not certain of it. New plugs, wires, coil, cap, rotor, points and condensor, etc. I don't have a fuel source hooked up at the moment, just dribbling a little gas down the carb with the choke set (new cable on that, and carb has been gone through as well) It cranked slow until the gas started going in, then the cranking speed doubled. I got a little smoke out of the breather, and a few smokey backfires out the muffler. It's close to running, but something's amiss. Could it just be out of time? I have the points set with a feeler gauge, etc.

Ahh the joys of bringing an engine back from the dead.....
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Old 05-15-2014, 09:06 AM   #2
19Fordy
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Default Re: 8BA, pops and backfires but no start.

Sounds like the timing is 180 degrees off and/or the firing order is incorrect. First check the firing order (1,5,4,8,6,3,7,2) then the timing.
Read all this for more info. https://www.fordbarn.com/forum/showth...ght=8ba+timing
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Old 05-15-2014, 09:13 AM   #3
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Default Re: 8BA, pops and backfires but no start.

I replaced the plug wires closely following a diagram starting at number one. I will look it over this evening. Thanks.
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Old 05-15-2014, 10:17 AM   #4
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Default Re: 8BA, pops and backfires but no start.

So the points should be pointing up and on the left side as a starting point. The vacuum advance diaphram is pointed up, and the line for it pointed off at an angle towards the carb. How about plug wires touching? They are wire core, so would they arc from one to the other if touching?
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Old 05-15-2014, 10:49 AM   #5
Seth Swoboda
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Default Re: 8BA, pops and backfires but no start.

Read 19Fordy's post again. Even though the plug wires are all in the right location the timing can still be 180 degrees off. Put the engine up on #1TDC and the rotor should point to the #1 plug on the distributor and the dimple on the crank pulley should line up with the pointer. It's easy to check and if your timing is set correctly, then I would go back to the condensor.
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Old 05-15-2014, 11:02 AM   #6
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Default Re: 8BA, pops and backfires but no start.

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I had that problem with a bad coil on my 52 Ford! Just another place to look after the other checks. Dave
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Old 05-15-2014, 11:03 AM   #7
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Default Re: 8BA, pops and backfires but no start.

A few back fires out the muffler? seems if it were out 180 it would fire out the crb too. Maybe only out by a gear tooth and is too retarded to catch and start. You also state it turns faster when it gets fuel, also a hint of the timeing being out. Just a thought.
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Old 05-15-2014, 01:59 PM   #8
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Default Re: 8BA, pops and backfires but no start.

New coil new points new condensor..as said earlier. Doesn't meAn they can't be bad though. I will give wverything a once kver tonight starting with checking TDC.
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Old 05-15-2014, 02:00 PM   #9
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Default Re: 8BA, pops and backfires but no start.

A lot of vehicles will run with the distributor out 180. I take it these will not?
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Old 05-15-2014, 02:02 PM   #10
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Default Re: 8BA, pops and backfires but no start.

What????
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Old 05-15-2014, 02:29 PM   #11
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Default Re: 8BA, pops and backfires but no start.

Quote:
Originally Posted by FordCustom View Post
A lot of vehicles will run with the distributor out 180. I take it these will not?
Never, ever heard or seen that .
Please explain and give an example.
Thanks.
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Old 05-15-2014, 04:46 PM   #12
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Default Re: 8BA, pops and backfires but no start.

I swear I read that in a book, long ago in the pre internet days. I could be wrong, or the book was wrong?
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Old 05-15-2014, 05:20 PM   #13
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Default Re: 8BA, pops and backfires but no start.

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A lot of vehicles will run with the distributor out 180. I take it these will not?
Really? I'd like to read that book.
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Old 05-15-2014, 05:36 PM   #14
s55mercury66
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Default Re: 8BA, pops and backfires but no start.

If the distributor cap was 180 out....better toss that book
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Old 05-15-2014, 06:07 PM   #15
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Default Re: 8BA, pops and backfires but no start.

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A lot of vehicles will run with the distributor out 180. I take it these will not?

Name 3 !!!

R
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Old 05-15-2014, 06:08 PM   #16
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Default Re: 8BA, pops and backfires but no start.

Well, I am finally home, and about to look it over. I will be back with my findings. Silly me to assume it was running when stored 25-30 years ago..
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Old 05-15-2014, 06:23 PM   #17
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Default Re: 8BA, pops and backfires but no start.

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Well, I am finally home, and about to look it over. I will be back with my findings. Silly me to assume it was running when stored 25-30 years ago..
Ahhh the old ran when parked.
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Old 05-15-2014, 07:07 PM   #18
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Default Re: 8BA, pops and backfires but no start.

Oh wow!!! My brain was playing tricks on me when I was installing the wires, and bigtime! All of the diagrams show the distributor connections going around one way on the diagram, and the close up of the distributor is flipped.. Somehow I had ALL the wires going around the distributor the opposite direction of how they were supposed to be. . I yanked all the wires off, trusted the ancient cap I had with the numbers hand painted on it, annnnd....

It sprang to life and idled like a brand new engine until the gas I dribbled down the carb ran out. No ticks, no knocks, nothing. It ran quietly, and the smithy muffler I shoved on the end of the rusty tailpipe beat out a steady lumlumlumlumlum.. I am ecstatic, as you might imagine!! Thanks for the help guys..!!
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Old 05-15-2014, 07:37 PM   #19
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Default Re: 8BA, pops and backfires but no start.

It doesn't get any better than this!
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Old 05-15-2014, 08:16 PM   #20
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Default Re: 8BA, pops and backfires but no start.

And just to have proof that it actually did fire up.


http://s114.photobucket.com/albums/n...c7d40.mp4.html
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