Spark plugs

Ask technical questions about your Ford Bronco II here. Technical write-ups on your axle swaps, engine swaps, chop tops, etc. are encouraged.
garagedude
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Joined: Sat Dec 10, 2005 12:27 pm
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Spark plugs

Postby garagedude » Thu Jul 05, 2007 9:29 pm

Which spark plugs and heat range would you use for a stock 84. I drive mostly on highway. Its starting to miss some, so time for a change.

Paul
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Location: Marysville, Indiana
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Postby Paul » Thu Jul 12, 2007 9:01 pm

you say a stock 84 BII well then you can be sure the stock plugs used by ford that are fairly inexpensive ....... Autolite brand ....... would be just fine for the application, or if you want to spend more you can buy bosch or the others but if it was good enough for ford to use for it it should be good enough to substantiate the truck now.....
1989 Bronco II 4x4
Mitsubishi 146 5 speed,
Stock D35
235/75/15
4.0L upgrade
NO LIFT
Crop Top

Dreg
Posts: 21
Joined: Wed Dec 06, 2006 6:14 pm

Postby Dreg » Sat Jul 14, 2007 2:24 pm

I've had good luck with NGK.

http://www.sparkplugs.com

Lance Skene
Posts: 130
Joined: Fri Dec 27, 2013 8:06 am
Location: Calgary Alberta

Re: Spark plugs

Postby Lance Skene » Thu Apr 02, 2015 10:48 am

Many autoparts stores these days have the referance book near the plugs, you simply look up your vehicle/engine and find the # of the plugs... or ask at the parts counter. New cap and rotor would be a good idea also.

Have you ever considered the duraspark conversion? Its well worth the effort.. better mileage, more power, less likely to fail. I have an '84 and an '85 both converted, wouldnt even consider running a 2.8 without it now.
'80 Bronco 351M
'85 BII 2.8/Duraspark
'89 F150 302 Supercab

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tekatlarge
Posts: 950
Joined: Tue Jan 17, 2006 8:54 am
Location: Kent, Worshington

Re: Spark plugs

Postby tekatlarge » Thu Apr 02, 2015 5:39 pm

I don't always change the plugs in my Fords but when I do I only use Dos Autolite!
The Tek @ Large
Kent,Worshington
I was borne under a rock. So what's your excuse?

raljake
Posts: 2
Joined: Wed Apr 29, 2015 6:51 pm
Location: SC

Re: Spark plugs

Postby raljake » Mon May 04, 2015 2:01 am

Old thread but I just want say that Motorcraft/Autolite works ok.

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tekatlarge
Posts: 950
Joined: Tue Jan 17, 2006 8:54 am
Location: Kent, Worshington

Re: Spark plugs

Postby tekatlarge » Mon May 04, 2015 2:44 pm

No body laughed at my joke!!!! Whaaaaaaaa
The Tek @ Large
Kent,Worshington
I was borne under a rock. So what's your excuse?

Fairlaneboy66
Posts: 5
Joined: Sat Mar 19, 2016 11:09 pm
Location: 80030

Re: Spark plugs

Postby Fairlaneboy66 » Sat Mar 19, 2016 11:58 pm

Check the restance on the sparkplug wires to make sure they are in spec. Between 3000 ohms to 15000 ohms per foot and check the coil while your at it. The primary coil will be around 1 to 2 ohms and secondary coils should be between 10500 ohms and 15000 ohms. Check the primary by using your leads across the power and ground on the coil. Check seconndary coil by testing from power or ground to coil output (lead to the distributer) I usually check both to make sure.


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