Spark Plug recommendation
Posting Guru
Joined: Oct 2000
Posts: 1,577
Likes: 0
From: Southern MD
Spark Plug recommendation
My tune-up guy suggested using the Motorcraft plugs as suggested on the emission sticker under the hood. If you do a lot of driving, go with the same plug, but copper, it'll last a bit longer.
I'm sure other preferences will be forth coming.
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http://easyad.net/images/94vanavitar.jpg http://www.easyad.net/images/mustang1.gif
'94 E-150 Conversion Van 4.9 / C-6 -- '89 Mustang LX 5.0
I'm sure other preferences will be forth coming.
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Postmaster
Joined: Jul 1999
Posts: 3,172
Likes: 4
Spark Plug recommendation
Motorcraft BSF 44C . They do just fine & arent that expensive . There are some auto parts stores that sell them besides Ford , A lot of times you can get them for under a $1 each if they are on sale , Maybe $1.50 reg price .
Post Fiend
Joined: Nov 2001
Posts: 14,947
Likes: 6
From: Topsfield, MA
Spark Plug recommendation
yeah i recommend the motorcrafts too, hard to beat.
95' F-150 EB 300/6
4" Superlift, GIbson, MSD, Ram Air Hood, just ordered BFG MEATS.
88' F-250 Superduty w/ 351w and c6.
80' E-350 w/ 300/6 and a 3 spd column shifter
95' Mercury Cougar 4.6L
Newest addition to the Ford Family....
99' Mustang GT 4.6L
95' F-150 EB 300/6
4" Superlift, GIbson, MSD, Ram Air Hood, just ordered BFG MEATS.
88' F-250 Superduty w/ 351w and c6.
80' E-350 w/ 300/6 and a 3 spd column shifter
95' Mercury Cougar 4.6L
Newest addition to the Ford Family....
99' Mustang GT 4.6L
Freshman User
Joined: Jan 2002
Posts: 32
Likes: 0
Spark Plug recommendation
I run Bosch Platuim Plus (not the four electrode model) or Motorcraft . Split fires are a waste as a saw no improvemt for the bucks and took them back for Motorcraft.
If your are stock I would also stay away from the cheap dist caps and rotors and go with motor craft. My NEW (autoZone)dist cap is only 3 months old and the post are rusted bad making the truck harder to start.
I noticed that with the bosch I got better gas millage and stronger pulling up hills and a rock solid idle.
with motorcraft I get a smothe Idle but some of the top end hp is gone as I have to lug it up hills or slow down enough to drop in to third.
Autolights seem to foul out faster then the rest .
with Bosch plugs I get around 17-18
with MotorCraft I get 16 Mpg
not bad for a 4300 pound 4 wheel drive Barn with a stocker 300 6
If your are stock I would also stay away from the cheap dist caps and rotors and go with motor craft. My NEW (autoZone)dist cap is only 3 months old and the post are rusted bad making the truck harder to start.
I noticed that with the bosch I got better gas millage and stronger pulling up hills and a rock solid idle.
with motorcraft I get a smothe Idle but some of the top end hp is gone as I have to lug it up hills or slow down enough to drop in to third.
Autolights seem to foul out faster then the rest .
with Bosch plugs I get around 17-18
with MotorCraft I get 16 Mpg
not bad for a 4300 pound 4 wheel drive Barn with a stocker 300 6
Trending Topics
Senior User
Joined: Jan 2002
Posts: 317
Likes: 0
From: Minnesota
Spark Plug recommendation
I've heard from a guy working at Napa that Motorcraft plugs are the same thing as Autolite . They look identical except for part numbers.
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Joe Kucinski
Senior User
Joined: Sep 2000
Posts: 385
Likes: 0
From: Flat Rock, Michigan
Spark Plug recommendation
shotgun:
I have driven my '81 4.9L over 200,000 miles and after that long you get to know your engine's favorite things. I use Bosch platnium plugs. They burn clean and last longer than all the others i have tried.
Now let me introduce my newest F-150 below. If my 2002 lasts as long as my 1981 than i shouldn't need another F-150 until sometime around 2022.
2002 F-150 4x4 REGULAR CAB
DARK SHADOW GRAY CLEARCOAT
XLT 139" WHEELBASE STYLESIDE
5.4L EFI V8 (she has *****!)
ELECTRONIC 4-SPD AUTO O/D
3.73 RATIO LIMITED SLIP AXLE
SKID PLATES
7700# PAYLOAD GROUP
TRAILER TOWING GROUP CLASS III
LT245/75R-16D OWL ALL-TERRAIN
BUILT FORD TOUGH!!!
4,050 miles
I have driven my '81 4.9L over 200,000 miles and after that long you get to know your engine's favorite things. I use Bosch platnium plugs. They burn clean and last longer than all the others i have tried.
Now let me introduce my newest F-150 below. If my 2002 lasts as long as my 1981 than i shouldn't need another F-150 until sometime around 2022.
2002 F-150 4x4 REGULAR CAB
DARK SHADOW GRAY CLEARCOAT
XLT 139" WHEELBASE STYLESIDE
5.4L EFI V8 (she has *****!)
ELECTRONIC 4-SPD AUTO O/D
3.73 RATIO LIMITED SLIP AXLE
SKID PLATES
7700# PAYLOAD GROUP
TRAILER TOWING GROUP CLASS III
LT245/75R-16D OWL ALL-TERRAIN
BUILT FORD TOUGH!!!
4,050 miles
Elder User
Joined: Jul 2001
Posts: 773
Likes: 0
From: torrington,ct
Spark Plug recommendation
i was wondering the same thing, has anyone tried those new bosch fours, or heard anything about them. i have heard before that yes the split fires are garbage. for those of you running bosch which ones do you have??
thanks
jon
thanks
jon
Posting Guru
Joined: Aug 2000
Posts: 1,984
Likes: 2
Spark Plug recommendation
fatfarm, I run Bosh Platinums in my Cherokee. They are the single electrode type, and I put the plats in so I wouldn't have to change them as often. The multiple electrodes will last even longer, because the spark transfers to another electrode when one wears. But I don't think that they do anything for perforance, because they still give only one spark per combustion event, not four, as Bosh would like you to think.
I have 10K miles on the Bosh plats now, and like them fine (no misfires). But I haven't pulled one to check it yet.:-X23
I have 10K miles on the Bosh plats now, and like them fine (no misfires). But I haven't pulled one to check it yet.:-X23
Senior User
Joined: Nov 2001
Posts: 161
Likes: 0
Spark Plug recommendation
I have looked around and never found the Bosch Platinum plugs for and strait 6 300 engine. The only one I was able to find was the Bosch Super. What part number are you using that is the Bosch Platinum?
Thanks.
Thanks.
Senior User
Joined: Jul 2001
Posts: 470
Likes: 0
Spark Plug recommendation
Platinum Plugs will last longer. Copper is a better conductor. Every year or so you should replace your copper plugs, your platinums will last at least 2 years. The 2-electrode ones will probably last long, but as mentioned above won't give more power. The 4-way plugs many say are bad, and I would tend to believe them. All that happens when its fireing is the spark kernel goes to 1 electrode, and the other 3 just end up shrouding it. With a 2-way I don't see it shrouding too bad, but with the 4-ways you're taking away alot of angle.
-=Whittey=-
-=Whittey=-