Bad Injectors? ..replacing Q's - Ranger-Forums - The Ultimate Ford Ranger Resource


8-Cylinder Tech If you are one of the few with a V8 engine in your Ranger, or if you dream of a Ranger with a V8 engine, this is the sub-forum for you.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 02-06-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
Bad Injectors? ..replacing Q's

I think im having injector problems as of late and im thinking about replacing them but i was wondering how hard of an install this is going to be for me. I have a complete manual for the motor so i would think i could follow that enough. I put in some cleaner today and im gona see how well it works. But it started off small with just a small hesitation at about 2700-3000 rpm cruising on the highway going about 75-80 or so. Just did it every once in a while almost like a pattern. Then lately it got worse and started doing it just taking off or at lower rpm. its like a power loss and kinda kicks back to normal for a sec then back to running like its losing a cylinder. it got bad enough for me to finally need to start figuring it out. I'm just thinking its injectors since i have one new coil and the other was good, new wires and plugs. If anyone else has some input on what it might be or how difficult injectors are to do that would be great. as i have never done injectors on a car yet
Reply With Quote
  #2  
Old 02-07-2008
My91Ranger's Avatar
Member
iTrader: (1)
 
Join Date: Apr 2007
Location: Roseville, Michigan
Posts: 2,252
3M sells an injector cleaner kit, for about 20 bucks, that hooks up to either the injectors directly or the fuel rail, and blasts them clear, I believe while the engine is running. I've never tried it before but we've had good success with it at work.

I'm about to do my head gaskets, and pull my injectors to replace the fuel rail and O-rings (suggested if they are old or in question), from all of my manuals it doesn't seem 2 be to bad to pull the injectors, i'll let u know u 2 weeks.

Also i've never found a way to clean injectors when they are off of a vehicle??
Reply With Quote
  #3  
Old 02-07-2008
V8Ranger's Avatar
Member
 
Join Date: Jan 2008
Location: Horseheads NY
Posts: 32
I dont know what year 5.0 you are running but when I had to replace the injectors on my 88 Mark VII ( has 5.0HO ) it was a brees. You just have to pull the intake plenum. Its a very easy job. I had one that was leaking but still didnt have any running problems just a gas smell. Good luck
Reply With Quote
  #4  
Old 02-07-2008
chriswells78's Avatar
Member
 
Join Date: Jan 2008
Location: Powell, OH
Posts: 45
They are not that bad. Time consuming mostly. IIRC you have an Explorer motor, right? Are you getting a lean code in either bank? What is your fuel pressure running? I'd be more inclined to think it might be a fuel pump problem rather than injector(s.) Just my $.02
Reply With Quote
  #5  
Old 02-07-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
It was throwing a lean code. i was told by my mechanic yesterday. i didnt ask him which bank or banks it was. I havnt done a pressure test yet, but now that you mention it i might have to check out the pump or the pressure regulator. My explorer pressure regulator i had to swap in might be bad. I put in some gumout full fuel system cleaner yesterday and so far it made slight improvement but that could just be cause its burning better with the **** in there and as soon as i use regular gas i could be back to the same problems. But of course now that i may need to do a pump or pressure regulator i have a full tank :(

im going over to the shop after work today and we are gona check out the pressure and see if the pump or regulator needs a fixn

Last edited by INT3RC3PTOR; 02-07-2008 at 12:37 PM.
Reply With Quote
  #6  
Old 02-07-2008
rangererv's Avatar
Member
 
Join Date: Mar 2005
Location: Dearborn Michigan
Posts: 4,376
as long as the injectors come out easy there not that hard to do. but if ur replacing them it done matter how easy it comes out. use pliers and yank em.
Reply With Quote
  #7  
Old 02-07-2008
chriswells78's Avatar
Member
 
Join Date: Jan 2008
Location: Powell, OH
Posts: 45
I forgot earlier, when you pull them out, make sure you get the o ring. My engine was out of the truck and I was replacing them with 30#ers so I just hap hazardly yanked the fuel rail off and didn't pay any attention. When I went to put the fuel rail back on, one injector was giving me fits. I spent 20 minutes trying to figure out why the thing wouldn't go back on the #6 plug right. Come to find out I had an O ring from the old injectors stuck up in there still. Live and learn.
Reply With Quote
  #8  
Old 02-07-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
well i found out its the right bank(driverside) that had thrown the code. That side is also the side i didnt replace the coil on. So is it maybe by chance the other coil going out as well? if so thatd be a simple fix. I still kinda seems like a fuel problem. Could be my pump or regulator going out maybe?
Reply With Quote
  #9  
Old 02-07-2008
chriswells78's Avatar
Member
 
Join Date: Jan 2008
Location: Powell, OH
Posts: 45
could be. Need to get a gauge on it and see. Is your engine returnless?
Reply With Quote
  #10  
Old 02-07-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
yeah its returnless.
Reply With Quote
  #11  
Old 02-08-2008
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,831
Quote:
Originally Posted by INT3RC3PTOR View Post
well i found out its the right bank(driverside) that had thrown the code. That side is also the side i didnt replace the coil on. So is it maybe by chance the other coil going out as well?
Each coil pack serves 2 cylinders on one bank and 2 on the other. So, if you have a problem on one bank only, it probably isn't the CP.

If it comes to it, injector replacement should be easy once the upper is out of the way. They are just trapped between the lower intake manifold and the fuel rails. A word of caution: the electrical connectors for the injectors become brittle over time and it is very easy to break the retention clips when removing them. If this happens, you would need a complete replacement engine harness or a set of Motorcraft repair connector kits. Either option is expensive.
Reply With Quote
  #12  
Old 02-08-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
thanks for the heads up Bob. I might be tearing into the motor to see whats up this weekend
Reply With Quote
  #13  
Old 02-08-2008
chriswells78's Avatar
Member
 
Join Date: Jan 2008
Location: Powell, OH
Posts: 45
That is a great heads up Bob. I did mine on an 85 degree fall day so they weren't that brittle but if you do it in the could you pretty much double your chance of snapping something plastic.
Reply With Quote
  #14  
Old 02-08-2008
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,831
My engine came from the yard without a harness. The used harness I bought for it had been removed by someone else and most of the clips were already broken. I was talking to a dealer tech about it and he said they break all the time on older engines. Luckily I found a friend of a friend who had some extra connector shells that he donated to my project. The Motorcraft repair connector kits for the injectors are around $35 ... EACH! The price of a new engine harness would have been even higher - more than I paid for my used engine and transmission combined.
Reply With Quote
  #15  
Old 02-08-2008
chriswells78's Avatar
Member
 
Join Date: Jan 2008
Location: Powell, OH
Posts: 45
I have this saved as a favorite, they have aftermarket EFI injector pigtails for $6 each. They are the best place I've found for ford connectors. If you modify fords on any sort of regularity it's real helpful.
http://rjminjectiontech.com/index.php?s=o2
Reply With Quote
  #16  
Old 02-08-2008
V8 Level II's Avatar
RF Veteran
iTrader: (4)
 
Join Date: Nov 2004
Location: Michigan
Posts: 7,831
Quote:
Originally Posted by chriswells78 View Post
Bookmarked!
Reply With Quote
  #17  
Old 02-08-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
yeah nice site! got it bookmarked myself.

So i put in another new coild on the right side to see if my luck its was that easy. But It seems so far (only driven it around the block and a few take offs) like its stopped the hessitation off and on etc and staying on for a while. but it almost seems like it has a little power loss all around. not taking off like it used to etc. I will see if it pulls the usual rough run like its been doing when i drive to my buddys place a few miles away. At this point it def. seems like a fuel problem and not spark
Reply With Quote
  #18  
Old 02-09-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
Hooked the truck up to my buddys snap-on scanner and found out about alot of whats going on. Its not injectors, not a fuel pump or regulator problem. But the passenger side bank was the lean one and the right was perfect. The lean side was dumping tons of fuel to make up for whatever was making it run so lean. the 02 sensors were working good, but one was showing weird numbers. then it got me thinking, i have had an exhaust leak at the pass. exhaust man. where it meats the exhaust. the donut is leaking enough to blow out and possibly suck in enough air to throw off how much air the motor is thinking it has. So tomarrow im taking the joint apart and replacing the bushing with a thicker one or just a new one. Hopefully its just this dumb problem that i can fix and be all good.
Reply With Quote
  #19  
Old 02-09-2008
chriswells78's Avatar
Member
 
Join Date: Jan 2008
Location: Powell, OH
Posts: 45
Good luck with those bolts. They tend to be a bieoch. I had to cut mine on both trucks. Sawzall was my friend :)
Reply With Quote
  #20  
Old 02-09-2008
INT3RC3PTOR's Avatar
Veteran Status Achieved
Thread Starter
iTrader: (4)
 
Join Date: Jul 2005
Location: Minnesooooota
Posts: 8,203
yeah for sure, luckily they are new bolts..but i still could be in a world of hurt
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
6 Bad Fuel Injectors??? rpbelize 4.0L OHV & SOHC V6 Tech 7 10-05-2011 11:09 PM
Will Replacing a bad Idle Air Control Valve Improve Gas Mileage? Liquidswords32 General Technical & Electrical 1 05-10-2011 11:24 PM
The_Dealer: Bad Deal Bad Member Bad Sell! LayingFrame89 Ranger Products, Company, & Member Reviews 34 12-01-2007 07:59 AM
Stock Drivesaft with RCD = BAD BAD BAD PICS INSIDE ranger General Ford Ranger Discussion 32 07-31-2007 12:50 PM
ALL offroaders are BAD BAD BAD! FMD General Ford Ranger Discussion 13 04-25-2006 08:21 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 03:57 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.