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Old 05-09-2015, 03:18 PM   #1
captaintaytay
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Default 8ba backfire

I finally got my Bubba distributor and just installed it.
I'am, (well, I was) confident I had it at TDC.
Checked and re-check my work and tried to start it and bang!.
Big backfire. Do you think I'm 180 off?
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Old 05-09-2015, 03:26 PM   #2
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Default Re: 8ba backfire

There is a old motor book out there with wrong firing order check Mercury.
Some times 180 out doesn't fire at all.
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Old 05-09-2015, 03:52 PM   #3
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Default Re: 8ba backfire

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Originally Posted by George/Maine View Post
There is a old motor book out there with wrong firing order check Mercury.
Some times 180 out doesn't fire at all.
That still leaves me at square one.
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Old 05-09-2015, 04:30 PM   #4
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Default Re: 8ba backfire

You may have smoked your power valve with the backfire if it was through the carb.
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Old 05-09-2015, 04:32 PM   #5
Walt Dupont--Me.
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Default Re: 8ba backfire

It sounds like it's 180 off. remove no. one spark plug ( front one on drivers side) stick finger in hole, bump starter, when it blows compression out turn engine in the correct rotation to line up timing mark, see if rotor is pointed to no. one in the cap. Walt
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Old 05-09-2015, 04:48 PM   #6
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Default Re: 8ba backfire

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If you didn't do one wire at a time start over.
TDC the rotor should be at 6 o'clock that's number one go in correct direction for firing order. That 6 o'clock is the ford start #1 and some times marked on cap.
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Old 05-09-2015, 05:25 PM   #7
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Default Re: 8ba backfire

How did you determine TDC?
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Old 05-09-2015, 05:57 PM   #8
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Default Re: 8ba backfire

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Originally Posted by JSeery View Post
How did you determine TDC?
Filled a bottle half way with oil and ran a tube to #1 cylinder turned over motor by hand until bubbles started and then went the other way until I got it.
It's on the internet somewhere.I got the link from here.

Anyways, distributor was off 180 degrees.
Put it back at proper place and it fired right up, but noticed a clacking sound.
It was coming from the distributor so I put it at TDC again and pulled the distributor out and noticed the distributor shaft has 1/2" of movement up and down. The ends of the rotor screws were hitting the top of where the condenser wire nuts up to the points. My old distributor does not move that much at all.
I did mount it properly pretty basic, but the shaft movement seem excessive.
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Old 05-09-2015, 07:05 PM   #9
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Default Re: 8ba backfire

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Originally Posted by Walt Dupont--Me. View Post
It sounds like it's 180 off. remove no. one spark plug ( front one on drivers side) stick finger in hole, bump starter, when it blows compression out turn engine in the correct rotation to line up timing mark, see if rotor is pointed to no. one in the cap. Walt
"Front one on drivers side"??
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Old 05-09-2015, 07:24 PM   #10
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Default Re: 8ba backfire

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Originally Posted by captaintaytay View Post
Filled a bottle half way with oil and ran a tube to #1 cylinder turned over motor by hand until bubbles started and then went the other way until I got it.
It's on the internet somewhere.I got the link from here.

Anyways, distributor was off 180 degrees.
Put it back at proper place and it fired right up, but noticed a clacking sound.
It was coming from the distributor so I put it at TDC again and pulled the distributor out and noticed the distributor shaft has 1/2" of movement up and down. The ends of the rotor screws were hitting the top of where the condenser wire nuts up to the points. My old distributor does not move that much at all.
I did mount it properly pretty basic, but the shaft movement seem excessive.
Sounds like you figured it out. With your method when you get the bubbles keep turning it the same direction (normal engine rotation) until the bubbles stop. TDC should be somewhere near.
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Old 05-09-2015, 07:41 PM   #11
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Default Re: 8ba backfire

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Originally Posted by JSeery View Post
Sounds like you figured it out. With your method when you get the bubbles keep turning it the same direction (normal engine rotation) until the bubbles stop. TDC should be somewhere near.
Yes Sir, it worked great.
But still a problem with new distributor.
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Old 05-09-2015, 07:55 PM   #12
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Default Re: 8ba backfire

The finger will always tell you!!
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Old 05-10-2015, 02:59 AM   #13
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Default Re: 8ba backfire

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Originally Posted by captaintaytay View Post
Yes Sir, it worked great.
But still a problem with new distributor.
Speak to bubba, sure he'll fix it.
Martin.
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Old 05-10-2015, 07:03 AM   #14
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Default Re: 8ba backfire

Cross out that (front drivers side) SHOULD BE FRONT PASSENGER SIDE. I've got a cold and was all drugged up, I'll blame it on that. Walt
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Old 05-10-2015, 08:44 AM   #15
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Default Re: 8ba backfire

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Originally Posted by captaintaytay View Post
Yes Sir, it worked great.
But still a problem with new distributor.
Way too much end play, i set them with a shim and run each one on a machine.
Get it back to me , i will fix and return the day i get it back.
Cant imagine how the end p[lay got off that much....

Sorry for any problems ......

Jim at Bubbas
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Old 05-10-2015, 12:28 PM   #16
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Default Re: 8ba backfire

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Originally Posted by BUBBAS IGNITION View Post
Way too much end play, i set them with a shim and run each one on a machine.
Get it back to me , i will fix and return the day i get it back.
Cant imagine how the end p[lay got off that much....

Sorry for any problems ......

Jim at Bubbas
Thanks Jim, PM sent.
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Old 06-13-2015, 01:48 PM   #17
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Default Re: 8ba backfire

Just got the chance to put in my Bubba dizzy that Jim fixed.
This is the first time since I have owned this car that it runs so good.
What a difference! Thanks alot Jim, your a heads up guy and a give great customer service. On to the next phase now.

P.S. Thanks also to "Bruce Lancaster" for great advise.
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Old 06-13-2015, 02:19 PM   #18
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Default Re: 8ba backfire

Quote:
Originally Posted by captaintaytay View Post
Just got the chance to put in my Bubba dizzy that Jim fixed.
This is the first time since I have owned this car that it runs so good.
What a difference! Thanks alot Jim, your a heads up guy and a give great customer service. On to the next phase now.

P.S. Thanks also to "Bruce Lancaster" for great advise.
Thanks for the reply , i hate to see a thread of anykind that doest have a closing fix,
The distributor did have a ton of end play , looked like the lower brass bushing had moved upward in the aluminum housing. Beats me how but it did, these are new housings we are using and we will double check them from now on. Thanks again for being patient on the repair.....
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Old 06-13-2015, 06:10 PM   #19
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Default Re: 8ba backfire

Quote:
Originally Posted by Walt Dupont--Me. View Post
Cross out that (front drivers side) SHOULD BE FRONT PASSENGER SIDE. I've got a cold and was all drugged up, I'll blame it on that. Walt

You'd be right first time in my part of the world Walt

GB
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Old 06-14-2015, 06:44 AM   #20
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Default Re: 8ba backfire

Another "Jim stands by his work" testimonial. A real gentleman. He walked me through a similar mess awhile back. I later discovered that the problem was the "loose nut behind the wrench" DUH! Thanks from all of us Jim.
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