Injector Question
Senior Member
Joined: Jul 2010
Posts: 8,544
Likes: 2,552
From: Alaska
Since you're the second senior member to suggest this, I have to ask. Why would a different brand of coil or plug cause a misfire? It is all brand new equipment that is built to OEM spec or better. And I should probably add some more backstory here.
The truck had a check engine before I did all of the tuneup work. However, I did not get to drive it and experience how it was before the tuneup was done, therefore I can't confirm or deny if it had a miss before. There was also an intake air temperature sensor code when the mechanic scanned it, I don't know if that has anything to do with this or not.
The truck had a check engine before I did all of the tuneup work. However, I did not get to drive it and experience how it was before the tuneup was done, therefore I can't confirm or deny if it had a miss before. There was also an intake air temperature sensor code when the mechanic scanned it, I don't know if that has anything to do with this or not.
There are numerouos injectors that you can buy that will boost a little performance. The Bosch replacements are great, if you can find them at a good price. I bought a couple of sets of them off eBay, and I sold one set to another individual. I don't know how they worked for him. Mine were the best mod, made by me, in my opinion. A compression test will tell you an awful lot of information. I'd definitely do it if it wasn't done by the mechanic before.
http://www.ebay.com/itm/2-Yr-Warrant...lVetTd&vxp=mtr
Last edited by akdoggie; Apr 19, 2016 at 10:51 PM.
Thread Starter
Junior Member
Joined: Apr 2016
Posts: 13
Likes: 0
Screwthat, thanks for the info on the intake air temperature sensor, i will talk to the mechanic about it more tomorrow. Please keep me posted about the possible issues with the parts I put on.
Akdoggie, the first thing I had the mechanic check was compression because I also suspected a valve problem. All of the cylinders tested good, #4 was slightly below the rest but nothing to worry about. Unfortunately my father started working on the truck while I was still in Fort Worth so I did not get to take the truck and get the codes read.
Those injectors look pretty nice, are they still 19 lb./hr. ones? How many miles do you have on yours? They look similar to the ones in the link in my original post, maybe I am on the right track. Thanks!
Akdoggie, the first thing I had the mechanic check was compression because I also suspected a valve problem. All of the cylinders tested good, #4 was slightly below the rest but nothing to worry about. Unfortunately my father started working on the truck while I was still in Fort Worth so I did not get to take the truck and get the codes read.
Those injectors look pretty nice, are they still 19 lb./hr. ones? How many miles do you have on yours? They look similar to the ones in the link in my original post, maybe I am on the right track. Thanks!
Senior Member
Joined: Jul 2010
Posts: 8,544
Likes: 2,552
From: Alaska
Screwthat, thanks for the info on the intake air temperature sensor, i will talk to the mechanic about it more tomorrow. Please keep me posted about the possible issues with the parts I put on.
Akdoggie, the first thing I had the mechanic check was compression because I also suspected a valve problem. All of the cylinders tested good, #4 was slightly below the rest but nothing to worry about. Unfortunately my father started working on the truck while I was still in Fort Worth so I did not get to take the truck and get the codes read.
Those injectors look pretty nice, are they still 19 lb./hr. ones? How many miles do you have on yours? They look similar to the ones in the link in my original post, maybe I am on the right track. Thanks!
Akdoggie, the first thing I had the mechanic check was compression because I also suspected a valve problem. All of the cylinders tested good, #4 was slightly below the rest but nothing to worry about. Unfortunately my father started working on the truck while I was still in Fort Worth so I did not get to take the truck and get the codes read.
Those injectors look pretty nice, are they still 19 lb./hr. ones? How many miles do you have on yours? They look similar to the ones in the link in my original post, maybe I am on the right track. Thanks!
Senior Member
Joined: Jul 2010
Posts: 8,544
Likes: 2,552
From: Alaska
Opps. Didn't read the wording correctly. The Bosch upgrades are 24# where as the stock injector is 19#. Brain cramp. lol They say you don't need bigger injectors, but the difference in performance is quite a bit better, than stock. You do have to tune the engine with a handheld, but to me it was worth the extra. Think of it like this. It's like putting a 650cfm Holley in place of a 500cfm carburator. The engine runs cooler, (more fuel), and the mpg is actually about the same. It usually works great, but you do have to tune for the excess fuel input. That's what a tuner is for.
97Badass---stock is 19# in almost all stock Fords. 24# is the upgrades. The Shelby's are higher. I agree 100% about E3 plugs. A total waste of money, imo.
Here is a link for the 19#'s if the OP is interested. These are good used, but there are new ones for the price I showed for the Bosch 24's.
http://www.ebay.com/itm/FORD-4-6-5-0...NXFw9A&vxp=mtr
97Badass---stock is 19# in almost all stock Fords. 24# is the upgrades. The Shelby's are higher. I agree 100% about E3 plugs. A total waste of money, imo.
Here is a link for the 19#'s if the OP is interested. These are good used, but there are new ones for the price I showed for the Bosch 24's.
http://www.ebay.com/itm/FORD-4-6-5-0...NXFw9A&vxp=mtr
Last edited by akdoggie; Apr 20, 2016 at 04:28 AM.
Senior Member
Joined: May 2015
Posts: 667
Likes: 43
From: North DFW
So I found a thread about e3's causing a misfire but it's on another forum so don't flame me for linking to it lol.
http://www.f150online.com/forums/v6-...ugs-no-go.html
As for why one is better than the other, the e3's are made by, if what I've read is correct, an oriental company and actually allows a separate marketing company to market them and hype them up. The e3's design is actually a performance inhibiter. The spark is going to travel the shortest distance from the center electrode to the side electrode. So you aren't going to get more spark just because your center electrode splits into two parts to form their diamond fire nonsense. Another down side is that the side electrode can actually block or shroud the spark from the fuel and can present hot spots that can cause pre detonation (an issue I had in my cheap Walmart weed whacker when I gave them a try).
There are many factors that determine spark plug performance such as electrode designs and gaps, heat ranges and several other things such as nickle coated threads to prevent corrosion in aluminum heads. But why does everyone suggest motorcraft? After years of learning about these trucks and many trials and errors, motorcraft has always been the best performing plug and coil to buy for stock application.
http://www.f150online.com/forums/v6-...ugs-no-go.html
As for why one is better than the other, the e3's are made by, if what I've read is correct, an oriental company and actually allows a separate marketing company to market them and hype them up. The e3's design is actually a performance inhibiter. The spark is going to travel the shortest distance from the center electrode to the side electrode. So you aren't going to get more spark just because your center electrode splits into two parts to form their diamond fire nonsense. Another down side is that the side electrode can actually block or shroud the spark from the fuel and can present hot spots that can cause pre detonation (an issue I had in my cheap Walmart weed whacker when I gave them a try).
There are many factors that determine spark plug performance such as electrode designs and gaps, heat ranges and several other things such as nickle coated threads to prevent corrosion in aluminum heads. But why does everyone suggest motorcraft? After years of learning about these trucks and many trials and errors, motorcraft has always been the best performing plug and coil to buy for stock application.
Thread Starter
Junior Member
Joined: Apr 2016
Posts: 13
Likes: 0
Just a quick update for everyone, I ordered the injectors from the link that I originally posted and the shop installed them today. All misfires are gone and the truck is running smooth and strong now. It turns out that the plugs and coils were not the problem, although only time will tell if they are quality parts or not. Thank you to everyone for the helpful replies and resources.
Senior Member
Joined: Jul 2010
Posts: 8,544
Likes: 2,552
From: Alaska
Just a quick update for everyone, I ordered the injectors from the link that I originally posted and the shop installed them today. All misfires are gone and the truck is running smooth and strong now. It turns out that the plugs and coils were not the problem, although only time will tell if they are quality parts or not. Thank you to everyone for the helpful replies and resources.
