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aa390392
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Joined: March 28, 2007
Posts: 3602
Location: So.Cal
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 Posted: Sun Dec 13, 2015 12:36 pm Post subject: OG 1967 Bendix Radio worked now it crackle's???? Help |
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Hey, I took the engine in for rebuild, prior the radio worked,now with the rebuild engine, the radio now makes crackling noise?
Specs.dual port, 12volt,1967 stock bedix radio,
Like I said it worked fine before. .....something to with the distributor?
Thanks for any and all suggestions
Thomas
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grandpa pete
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Joined: July 06, 2008
Posts: 6426
Location: St. Petersburg, FL
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| Posted: Sun Dec 13, 2015 12:58 pm Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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distributor should give you a wineing noise and can be fixed with a noise suppressor;
crackle might be the speaker is broken or loose
New repop speaker is less than ten bucks at Wolfsburg West
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EVfun
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Joined: April 01, 2012
Posts: 5469
Location: Seattle
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| Posted: Sun Dec 13, 2015 2:26 pm Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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A bad speaker, a bad power or speaker connections, or a cracked solder joint -- these are the usual suspects. A failing part cannot be ruled out. In your advantage is that you have some function, which should should make troubleshooting easier. After checking all external connections you may want to find an old school electronics repair shop.
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aa390392
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Joined: March 28, 2007
Posts: 3602
Location: So.Cal
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| Posted: Sun Dec 13, 2015 4:06 pm Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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Nope none of the above,
Static,and poping when eng. Is running, like I said was perfect before eng. Rebuild..nothing like a resistor in dist?
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aa390392
Samba Member
Joined: March 28, 2007
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Location: So.Cal
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| Posted: Sun Dec 13, 2015 4:08 pm Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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Condensor? Wiring from dist. To plugs?
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rcooled
Samba Member
Joined: September 20, 2008
Posts: 2502
Location: Santa Cruz, CA
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| Posted: Sun Dec 13, 2015 5:26 pm Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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This is only happening when the car's running, right? Does the noise change in any way when you rev the engine? If so, check the plugs to make sure they're the resistor type. Are the plug wires shielded?
| aa390392 wrote: |
| ..nothing like a resistor in dist? |
No resistor, but you might check to see if the condenser was replaced during the rebuild.
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aa390392
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Joined: March 28, 2007
Posts: 3602
Location: So.Cal
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| Posted: Mon Dec 14, 2015 6:41 pm Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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Rcooled are not all plug wires created equal....or do some have resistors in the wiring?
And if the condenser is new or the old one used? Does that make a difference?
Thanks for help
Thomas
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rcooled
Samba Member
Joined: September 20, 2008
Posts: 2502
Location: Santa Cruz, CA
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| Posted: Mon Dec 14, 2015 9:04 pm Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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| aa390392 wrote: |
| Rcooled are not all plug wires created equal....or do some have resistors in the wiring? |
Some wires have a compressed-copper core, or are jacketed in wire mesh to suppress radio static. Un-shielded copper wire (found in the standard Bosch VW cable set) acts like an antenna to broadcast RFI. If you use these wires, you need to pair them with resistor-type spark plugs.
| aa390392 wrote: |
| And if the condenser is new or the old one used? Does that make a difference? |
The condenser helps to minimize sparking at the ignition points when they open & close. This is another source of RFI. Condensers usually last a good long time, but you never know...
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aa390392
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Location: So.Cal
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| Posted: Thu Dec 17, 2015 10:01 am Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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Thanks for help that should cure symptoms
Thomas
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KTPhil 
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Joined: April 06, 2006
Posts: 33986
Location: Conejo Valley, CA
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| Posted: Thu Dec 17, 2015 10:52 am Post subject: Re: OG 1967 Bendix Radio worked now it crackle's???? Help |
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| rcooled wrote: |
Un-shielded copper wire (found in the standard Bosch VW cable set) acts like an antenna to broadcast RFI. If you use these wires, you need to pair them with resistor-type spark plugs.
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...or regular plugs plus the OEM resistor (1KΩ) bakelite SP connectors. |
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