spark plugs

94redranger · 09-03-2007, 10:17 PM

what are the best plugs to buy for the 94 4.0 motor? How good are plugs like bosch platinum 4's or denso iridiums? thanks

steve34043 · 09-14-2007, 10:46 AM

Hi again,

Use the original motorcraft platinum plugs. I tried the bosch and melted the electorde up into the plugs. The spark out of the coil pack is too high for them. I did a lot of research on it, and the motorcraft are the best.

Steve

85_Ranger4x4 · 09-14-2007, 10:52 AM

Most Fords for some reason do not like Bosche plugs, stay with either Autolight or Motorcraft, they are both good. I have heard of the Bosches also coming apart inside the engine, which is not a good thing for a spark plug to do.

michowski · 09-14-2007, 01:08 PM

stay away from bosch. Ive heard a lot more negative then positive about them in fords for some reason. I would either get motorcraft or ac delco.

Explorin94 · 09-14-2007, 07:52 PM

I wouldn't put Bosch's in my worst enemies vehicle!

94redranger · 09-14-2007, 08:07 PM

how about denso iridiums or ngk iridiums?

**JoshT** · 09-14-2007, 08:35 PM

Quote:

Originally Posted by Brett Simpson

I wouldn't put Bosch's in my worst enemies vehicle!

I would!

Quote:

Originally Posted by 94redranger

how about denso iridiums or ngk iridiums?

I don't know anything about iridium plugs, but NGK is pretty good. I run NGKs in my motorcycle, four wheeler and the lawn equiptment. That said we run Autolites in the vehicles.

Quote:

Originally Posted by 85_Ranger4x4

Most Fords for some reason do not like Bosche plugs, stay with either Autolight or Motorcraft, they are both good. I have heard of the Bosches also coming apart inside the engine, which is not a good thing for a spark plug to do.

For the Autolite vs Motorcraft, they are the same plug. Motorcraft plugs are made by Autolite. My truck had Bosches in it when I bought it, after pulling the out a few fell apart in my hands, that's never happened with the Autolites or NGKs.

skippy · 09-14-2007, 08:50 PM

use autolite plugs,the bosch plugs are definite purpose plugs.they were,near as i can tell,intended for use as fishing line sinkers and they work very well when fishing the bottom.

jtfoxman · 10-05-2007, 09:10 PM

Quote:

Originally Posted by steve34043

Hi again,

Use the original motorcraft platinum plugs. I tried the bosch and melted the electorde up into the plugs. The spark out of the coil pack is too high for them. I did a lot of research on it, and the motorcraft are the best.

Steve

Mine did the same with the Bosch plugs. Either motorcraft or I use the Autolite double platinums for the past few years and they seem to work just as well as the motorcraft.

ashleyroachclip · 10-24-2007, 10:45 PM

So are platinum plugs required on our 4.0's ?
Reason I ask ,is because I bought my truck a few years ago , and it had the original plugs .
Platinums .
I replaced them with regular autolites 745's .
The only problem I have had is that the 2nd plug on the passenger side , always burns the plug beside the ground electrode , or sometimes burn the ground electrode off entirely , after about 6 months .
I am wondering if I have a bad coil pack or a bad wire .
I have looked under the hood at nite , and have no arrant sparking .
Any one have any ideas?

09-03-2007, 10:17 PM	#1
94redranger Member Join Date: Aug 2007 Year: 1994 Make: Ford Model: Ranger Posts: 212 Rep Power: 12 iTrader: (0)	spark plugs what are the best plugs to buy for the 94 4.0 motor? How good are plugs like bosch platinum 4's or denso iridiums? thanks
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09-14-2007, 10:46 AM	#2
steve34043 New Member Join Date: Sep 2007 Year: 1994 Make: Ford Model: Ranger Posts: 11 Rep Power: 0 iTrader: (0)	Hi again, Use the original motorcraft platinum plugs. I tried the bosch and melted the electorde up into the plugs. The spark out of the coil pack is too high for them. I did a lot of research on it, and the motorcraft are the best. Steve
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09-14-2007, 10:52 AM	#3
85_Ranger4x4 Member Join Date: Aug 2007 Location: Between Omaha & Des Moines Year: 1985 Make: Ford Model: Ranger Engine: 5.0 Class: 4x4 Used For: A weapon of massive consumption. Posts: 11,201 Rep Power: 51 iTrader: (0)	Most Fords for some reason do not like Bosche plugs, stay with either Autolight or Motorcraft, they are both good. I have heard of the Bosches also coming apart inside the engine, which is not a good thing for a spark plug to do. __________________ 1985 Ford Ranger Custom, 4x4, PA 3" BL, 5.0 HO wannabe, C5 Transmixer, 31 spline T/L 8.8 w/ disc brakes. Build Thread My Ranger is not old; no one would call her old. She has a bluff bow, lovely lines. She's a fine truck: weatherly, stiff and fast... very fast, if she's well handled. No, she's not old; she's in her prime.
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09-14-2007, 01:08 PM	#4
michowski Member Join Date: Aug 2007 Posts: 1,167 Rep Power: 14 iTrader: (1)	stay away from bosch. Ive heard a lot more negative then positive about them in fords for some reason. I would either get motorcraft or ac delco.
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09-14-2007, 07:52 PM	#5
Explorin94 Member Join Date: Aug 2007 Location: Farmington Il. Year: 1988 Make: Ford Model: Ranger Engine: 4.0 Class: 4x4 Used For: Trail Slut Posts: 2,139 Rep Power: 19 iTrader: (1)	I wouldn't put Bosch's in my worst enemies vehicle! __________________ HE WHO DIES WITH THE MOST TOYS WINS
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09-14-2007, 08:07 PM	#6
94redranger Member Join Date: Aug 2007 Year: 1994 Make: Ford Model: Ranger Posts: 212 Rep Power: 12 iTrader: (0)	how about denso iridiums or ngk iridiums?
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09-14-2007, 08:50 PM	#8
skippy Member Join Date: Aug 2007 Location: Georgia,USSA Year: 1983 Make: ford Model: ranger xlt Engine: 2.8l durasparked rice killer Class: 2wd street Used For: building carbon debits Posts: 4,893 Rep Power: 26 iTrader: (0)	use autolite plugs,the bosch plugs are definite purpose plugs.they were,near as i can tell,intended for use as fishing line sinkers and they work very well when fishing the bottom. __________________ fairtax.org fairtax.net Colt .45,don't leave home without it. What's in your holster? I don't hate often but when I do it's libtards. I may be found dead in a ditch,but i'll be laying in a pile of brass.
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10-24-2007, 10:45 PM	#10
ashleyroachclip Member Join Date: Oct 2007 Year: 1994 Ranger STX Make: 1995 Explorer L Posts: 145 Rep Power: 12 iTrader: (0)	So are platinum plugs required on our 4.0's ? Reason I ask ,is because I bought my truck a few years ago , and it had the original plugs . Platinums . I replaced them with regular autolites 745's . The only problem I have had is that the 2nd plug on the passenger side , always burns the plug beside the ground electrode , or sometimes burn the ground electrode off entirely , after about 6 months . I am wondering if I have a bad coil pack or a bad wire . I have looked under the hood at nite , and have no arrant sparking . Any one have any ideas?
	Tweet

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