mpg and plugs
#1
mpg and plugs
i bought my truck used and the guy before me changed plugs in it. He changed them to the bosch platinum plugs. I have herd some guys having troubles with these plugs and some guys say they worked just fine. Also after working on the truck a little iv notice the guy had a tendincy to do half a** jobs. so i was wondering what other people are getting for mpg on the 4.0 SOHC engine. this way i could compare sense i never drove the truck without these plugs in them thanks.
#10
Too hot a plug will generally give the feel of more power down low. Too cold a plug will make it stumble until the plugs get to the right temp. Otherwise.. the plugs don't really effect MPG more than about 0.25 to maybe 0.5mpg at the most.
Now if your talking an unshrouded type of plug.. there might be a 0.5mpg gain there. And that's only a maybe..
Rich
Now if your talking an unshrouded type of plug.. there might be a 0.5mpg gain there. And that's only a maybe..
Rich
#11
#12
#14
No kidding. I just replaced all 6 with wires last weekend.
What a pain. I was cursing the engineers the whole time.
I replaced mine, because it was missing down low. The plugs looked OK. I got autolite platinum with autolite wires.
Runs better. I haven't checked the mileage lately. But; I used to get between 18 - 20 on the highway.
What a pain. I was cursing the engineers the whole time.
I replaced mine, because it was missing down low. The plugs looked OK. I got autolite platinum with autolite wires.
Runs better. I haven't checked the mileage lately. But; I used to get between 18 - 20 on the highway.
#15
Avoid Bosch Platinum +Anythings like the plague, the multi-pronged monstrosities cannot be gapped and pre-packaged, have a tiny gap compared to what Ford requires.
Not to mention its a gimmick, electricity travels down the path of least resistance, it won't split up and travel down two, three, four or six different prongs, no matter the shape or size. By that time the plug is fouled out and its pointless how many prongs it has.
Mercedes-Benz is the only manufacturer that still uses Bosch plugs as OE, and not a single one of them are these multi-pronged wallet lighteners.
Not to mention its a gimmick, electricity travels down the path of least resistance, it won't split up and travel down two, three, four or six different prongs, no matter the shape or size. By that time the plug is fouled out and its pointless how many prongs it has.
Mercedes-Benz is the only manufacturer that still uses Bosch plugs as OE, and not a single one of them are these multi-pronged wallet lighteners.
Last edited by 84FordMan; 04-10-2009 at 06:50 PM. Reason: Minor correction
#16
that exactly what it was. the three on the driver side were done and the three on the passenger side were still from factory. i put autolite platinums as well. but the only wires that were available without ordering were duralast so thats what i got for wires. with plugs and wires done know im getting about 16 mpg doin 75 most o the time.
Thread
Thread Starter
Forum
Replies
Last Post
Fx4wannabe01
General Technical & Electrical
9
05-22-2007 10:55 AM