|
|
06-23-2015, 03:16 AM
|
#1
|
Junior Member
Join Date: Jun 2015
Posts: 16
|
Triton V10 injectors not firing
Hi all,
I have a 2005 Coachmen Mirada on a Ford chassis. It will not start, my mechanic tells me we have 43 psi at the rail for fuel and all plugs are sparking. He says on testing the injectors are not firing. We are in the United kingdom so not to many experts on these engines here. He has asked me to ask, if anyone has a wiring diagram and does the crankshaft sensor control the injectors
any help gratefully received
|
|
|
|
Join the #1 RV Forum Today - It's Totally Free!
iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!
You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!
|
06-23-2015, 03:19 AM
|
#2
|
Community Administrator
Join Date: Aug 2009
Posts: 53,430
|
Triton V10 injectors not firing
Welcome to irv2. I'm sure someone will be along shortly to assist.
Cliff
__________________
Cliff,Tallulah and Buddy ( 1999-2012 )
|
|
|
06-23-2015, 05:35 AM
|
#3
|
Registered User
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 7,114
|
I am not the expert. But I do have diagrams for the 2001 Coachman Mirada (2001 F53)
Fuel pressure at the rail says a lot of stuff is OK.
Looking through the diagrams, the fuel injectors and spark plug coils are controlled directly from the PCM (Powertrain Control Module)
The Camshaft sensor feeds the PCM and I see a note that it is used to fire the FI during start. (see below)
This also has a crank sensor, but apparently doesn't get involved with FI firing
See attached.
..
|
|
|
06-23-2015, 06:15 AM
|
#4
|
Senior Member
Ford Super Duty Owner
Join Date: Jan 2011
Location: Lowell, Arkansas
Posts: 7,297
|
What have you done to assure that the injectors ARE NOT OPENING TO ALLOW FUEL INTO THE COMBUSTION CHAMBER? I'm guessing that your tech knows what he's doing but I've been caught before making assumptions so that's why I'm asking that question. Verify that no fuel is getting into any of the chambers and explain how that was determined. This I will also agree to. One can assume if you are getting spark and compression it should fire unless no fuel is present. It's still best to not make assumptions.
TeJay
__________________
TeJay Auto Instructor/4-yrs USAF/ Liz: RN/ WBGO 2014 Vista 30T/ F-53/CHF/5-Star/Koni * Bella & Izzy * Golden /Cocker mix/ Louie The Cat* All Retired
|
|
|
06-23-2015, 08:09 AM
|
#5
|
Registered User
Ford Super Duty Owner
Join Date: Nov 2014
Location: NW Ohio
Posts: 7,114
|
TeJay,
Sounds like the tech is moving in the right direction, but like you say, if the tech isn't familiar, he could overlook stuff.
I would get a can of starting fluid or carb cleaner and spray it in the intake as I crank. If it tries to fire and run, That pretty much says fuel problem.
If he has 45 psi at the rail, that says the pump is OK, Other than wierd problem, i.e. water in fuel, If it doesn't start, the FIs would be the next suspect.
He could take a sample of fuel from the rail and make sure its not water.
I have a set of NOID test lights that I used once. These will tell you if the injectors are firing. it won't tell you if they are firing correctly.
Fuel Injection Test Injector Tester Noid Light Tool Set | eBay
|
|
|
06-23-2015, 08:54 AM
|
#6
|
Junior Member
Join Date: Jun 2015
Posts: 16
|
Quote:
Originally Posted by Waiter21
TeJay,
Sounds like the tech is moving in the right direction, but like you say, if the tech isn't familiar, he could overlook stuff.
I would get a can of starting fluid or carb cleaner and spray it in the intake as I crank. If it tries to fire and run, That pretty much says fuel problem.
If he has 45 psi at the rail, that says the pump is OK, Other than wierd problem, i.e. water in fuel, If it doesn't start, the FIs would be the next suspect.
He could take a sample of fuel from the rail and make sure its not water.
I have a set of NOID test lights that I used once. These will tell you if the injectors are firing. it won't tell you if they are firing correctly.
Fuel Injection Test Injector Tester Noid Light Tool Set | eBay
|
My tech has used lights to see that the injectors are not operating. So he now suspects ECU or crankshaft sensor, but was not sure if the sensor did operate the injectors.
Thank you all for your input.
|
|
|
06-23-2015, 09:05 AM
|
#7
|
Senior Member
Join Date: Jan 2015
Location: So.Cal.
Posts: 297
|
Did he pull the codes? That tells you more than anything else. Post the codes so we can see whats going on.
__________________
2013 Itasca Sunova 30A
2006 Crownline 250cr
2012 Ram Laramie Longhorn
|
|
|
06-23-2015, 09:47 AM
|
#8
|
Senior Member
Join Date: Dec 2003
Location: Motor City, Mich
Posts: 3,367
|
If it has spark, it's not the crank sensor, and the ECU is online and at least partially functioning. It'll start without the cam sensor, fuel may be mistimed, but it will run.
Injectors have power? There should be 12 volts on one wire. The ECU grounds the other to make it fire.
Try this link for injector wiring diagram
And this one for where the power gets to the injectors
__________________
Tim.
|
|
|
06-23-2015, 09:20 PM
|
#9
|
Senior Member
Join Date: May 2012
Posts: 977
|
If you have no strobe at the injectors make sure the ecu is getting the signal from the cam sensor. If so then the ecu will most likely be your problem. The ecu uses the signal from the cam sensor to pulse the ground to the injectors. It can always be faulty wiring in between but a simple continuity test can eliminate that part.
|
|
|
06-23-2015, 09:25 PM
|
#10
|
Senior Member
Ford Super Duty Owner
Join Date: Apr 2012
Location: Austin, TX
Posts: 1,886
|
Quote:
Originally Posted by tderonne
Injectors have power? There should be 12 volts on one wire. The ECU grounds the other to make it fire.
|
That'll measure 12v on either wire, as not running it's an open circuit and the only difference on which wire is the resistance of the injector.
That is, check for 12v at the injector with the other probe grounded..
As mentioned above, it's the ECU's job to "pulse" the injector to ground.
|
|
|
06-24-2015, 04:00 AM
|
#11
|
Junior Member
Join Date: Jun 2015
Posts: 16
|
Quote:
Originally Posted by tderonne
|
Thanks for trying, but the links will not work.
|
|
|
06-24-2015, 08:44 AM
|
#12
|
Senior Member
Tiffin Owners Club
Join Date: Jul 2011
Location: Cape Cod
Posts: 360
|
Check it with a scan tool. Let us know the codes. Does it have PATS? If you would like to PM me the VIN I can check for VIN specific issues.
|
|
|
06-26-2015, 11:43 AM
|
#13
|
Junior Member
Join Date: Jun 2015
Posts: 16
|
Quote:
Originally Posted by Todd157k
Did he pull the codes? That tells you more than anything else. Post the codes so we can see whats going on.
|
Code was PO316 (26,10,3,16)
|
|
|
06-26-2015, 11:44 AM
|
#14
|
Junior Member
Join Date: Jun 2015
Posts: 16
|
Quote:
Originally Posted by cb1000rider
That'll measure 12v on either wire, as not running it's an open circuit and the only difference on which wire is the resistance of the injector.
That is, check for 12v at the injector with the other probe grounded..
As mentioned above, it's the ECU's job to "pulse" the injector to ground.
|
12 volts at the injectors.
|
|
|
|
|
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
|
|
Thread Tools |
Search this Thread |
|
|
Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
» Recent Discussions |
|
|
|
|
|
|
|
|
|
|
|
|
|