Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

There are two questions here. I have a 1980 CJ-5, with V-8 engine. I
cannot say when the plugs were last changed (years), and I think that the
plug wires are original. I plan to change the plugs and wires soon. Is
there a very good specific brand to use for this? I want real good
quality parts if I am going to go to the trouble to do this.

Question 2-- my radio in this jeep suffers from terrible ignition
noise while listening to the am band. FM is ok. I suspect the plug
wires may be contributing to or causing this noise. Is there any other
culprit I should be thinking about if that doesn't provide the full cure ??

Thanks for any helpful comments !!


--James--

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

James Nipper did pass the time by typing:
> There are two questions here. I have a 1980 CJ-5, with V-8 engine. I
> cannot say when the plugs were last changed (years), and I think that the
> plug wires are original. I plan to change the plugs and wires soon. Is
> there a very good specific brand to use for this? I want real good
> quality parts if I am going to go to the trouble to do this.
>
> Question 2-- my radio in this jeep suffers from terrible ignition
> noise while listening to the am band. FM is ok. I suspect the plug
> wires may be contributing to or causing this noise. Is there any other
> culprit I should be thinking about if that doesn't provide the full cure ??
>
> Thanks for any helpful comments !!

Good quality cap and rotor with brass fittings, not the crappy
aluminum looking ones. Good resistor style spark plugs, and a
good set of wires. They make RF supression core wires, those
should be what you look for.

I use Bosch cap/rotor/wires and Autolite plugs. Works for me.

Does your 80 have points? :) Prolly not but just in case, there
is a noise supression cap that goes in there. Looks like a little
metal can with one wire on it.

Bad ground on the engine will cause lots of noise. Check your
engine ground strap to see that it hasn't corroded away.

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

James Nipper did pass the time by typing:
> There are two questions here. I have a 1980 CJ-5, with V-8 engine. I
> cannot say when the plugs were last changed (years), and I think that the
> plug wires are original. I plan to change the plugs and wires soon. Is
> there a very good specific brand to use for this? I want real good
> quality parts if I am going to go to the trouble to do this.
>
> Question 2-- my radio in this jeep suffers from terrible ignition
> noise while listening to the am band. FM is ok. I suspect the plug
> wires may be contributing to or causing this noise. Is there any other
> culprit I should be thinking about if that doesn't provide the full cure ??
>
> Thanks for any helpful comments !!

Good quality cap and rotor with brass fittings, not the crappy
aluminum looking ones. Good resistor style spark plugs, and a
good set of wires. They make RF supression core wires, those
should be what you look for.

I use Bosch cap/rotor/wires and Autolite plugs. Works for me.

Does your 80 have points? :) Prolly not but just in case, there
is a noise supression cap that goes in there. Looks like a little
metal can with one wire on it.

Bad ground on the engine will cause lots of noise. Check your
engine ground strap to see that it hasn't corroded away.

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

James Nipper did pass the time by typing:
> There are two questions here. I have a 1980 CJ-5, with V-8 engine. I
> cannot say when the plugs were last changed (years), and I think that the
> plug wires are original. I plan to change the plugs and wires soon. Is
> there a very good specific brand to use for this? I want real good
> quality parts if I am going to go to the trouble to do this.
>
> Question 2-- my radio in this jeep suffers from terrible ignition
> noise while listening to the am band. FM is ok. I suspect the plug
> wires may be contributing to or causing this noise. Is there any other
> culprit I should be thinking about if that doesn't provide the full cure ??
>
> Thanks for any helpful comments !!

Good quality cap and rotor with brass fittings, not the crappy
aluminum looking ones. Good resistor style spark plugs, and a
good set of wires. They make RF supression core wires, those
should be what you look for.

I use Bosch cap/rotor/wires and Autolite plugs. Works for me.

Does your 80 have points? :) Prolly not but just in case, there
is a noise supression cap that goes in there. Looks like a little
metal can with one wire on it.

Bad ground on the engine will cause lots of noise. Check your
engine ground strap to see that it hasn't corroded away.

--
-- DougW -- 93 ZJ 4.0 http://members.cox.net/wilsond
HESCO Supercharger - 300W IASCA Stereo - Edelbrock IAS Shocks
Gibson Exhaust - rear DCpower - custom gauge install - Stillen Rotors

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

I just went through this with my 99 Jeep Cherokee. The dealer did a
50K tuneup and I ended up going from a perfectly RF silent engine to a
radio interference spark gap generator. I found that my problem was
with the new distributor cap and rotor they put in. It was a very
cheap cap with aluminum fittings and a carbon button center conductor.
I replaced it with a distributor cap with a brass spring loaded center
conductor and a brass type rotor and that cleaned up all the noise.

As someone said to me here in this forum, if the engine doesn't start
with a pull cord, stay away from Champion plugs. I went with
Autolites and they worked fine. I also used Autolite Professional
Suppression wires, but to be honest, the Chrysler Mopar wires the
dealer had installed seemed to be every bit as good, and had a few
thousand ohms more resistance in each wire, which might mean even more
supression at RF.

Good luck, I know it can be an irritating problem!

Ender

"The only thing necessary for the triumph of evil is for good men to do nothing." Edmund Burke

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

I just went through this with my 99 Jeep Cherokee. The dealer did a
50K tuneup and I ended up going from a perfectly RF silent engine to a
radio interference spark gap generator. I found that my problem was
with the new distributor cap and rotor they put in. It was a very
cheap cap with aluminum fittings and a carbon button center conductor.
I replaced it with a distributor cap with a brass spring loaded center
conductor and a brass type rotor and that cleaned up all the noise.

As someone said to me here in this forum, if the engine doesn't start
with a pull cord, stay away from Champion plugs. I went with
Autolites and they worked fine. I also used Autolite Professional
Suppression wires, but to be honest, the Chrysler Mopar wires the
dealer had installed seemed to be every bit as good, and had a few
thousand ohms more resistance in each wire, which might mean even more
supression at RF.

Good luck, I know it can be an irritating problem!

Ender

"The only thing necessary for the triumph of evil is for good men to do nothing." Edmund Burke

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

I just went through this with my 99 Jeep Cherokee. The dealer did a
50K tuneup and I ended up going from a perfectly RF silent engine to a
radio interference spark gap generator. I found that my problem was
with the new distributor cap and rotor they put in. It was a very
cheap cap with aluminum fittings and a carbon button center conductor.
I replaced it with a distributor cap with a brass spring loaded center
conductor and a brass type rotor and that cleaned up all the noise.

As someone said to me here in this forum, if the engine doesn't start
with a pull cord, stay away from Champion plugs. I went with
Autolites and they worked fine. I also used Autolite Professional
Suppression wires, but to be honest, the Chrysler Mopar wires the
dealer had installed seemed to be every bit as good, and had a few
thousand ohms more resistance in each wire, which might mean even more
supression at RF.

Good luck, I know it can be an irritating problem!

Ender

"The only thing necessary for the triumph of evil is for good men to do nothing." Edmund Burke

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

"Ender" <enderwiggin3rd@SBhotmail.com> wrote in message
news:8loe00pqkvsse96dggmaoo1ocg3fn3aeoe@4ax.com...
and had a few
> thousand ohms more resistance in each wire, which might mean even more
> supression at RF.

Exactly. This is why we have resistor spark plugs and carbon core ignition
wires. :)

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

"Ender" <enderwiggin3rd@SBhotmail.com> wrote in message
news:8loe00pqkvsse96dggmaoo1ocg3fn3aeoe@4ax.com...
and had a few
> thousand ohms more resistance in each wire, which might mean even more
> supression at RF.

Exactly. This is why we have resistor spark plugs and carbon core ignition
wires. :)

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/

Re: Best Spark Plugs? Wires ? // AM Radio Interference Noise ?
 

"Ender" <enderwiggin3rd@SBhotmail.com> wrote in message
news:8loe00pqkvsse96dggmaoo1ocg3fn3aeoe@4ax.com...
and had a few
> thousand ohms more resistance in each wire, which might mean even more
> supression at RF.

Exactly. This is why we have resistor spark plugs and carbon core ignition
wires. :)

Jerry
--
Jerry Bransford
To email, remove 'me' from my email address
KC6TAY, PP-ASEL
See the Geezer Jeep at
http://members.cox.net/jerrypb/