Question about 2005 Ford F-150

1 Answer

How do I tell if an injector is working.

I have changed the plugs and still getting a mis-fire reading on 5 and 7.

Posted by on

  • kevin carpenter May 11, 2010

    IS THIS A V8 OUR A V10 MOTOR A VAUCCMN LEAK CAN CAUSE THIS PROBLEM ON EITHER MTR. WHEN YOU CHANGED THE PLUGS DID YOU REPLACE THE COIL BOOTS AND THE COIL SPRINGS. WAS THERE ANY COOLANT IN THE PLUG HOLES? ALSO WHEN YOU REINSTALL COILS DID THEY SNAP DOWN TIGHT.

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Ford Master
  • 751 Answers

Hi my name is Allen, the first thing you need to do when you have a misfire is check compression for the cylinder that is misfiring with a compression gauge. The answer to your question posted on the forum. You need to check first to see if the computer is doing its job, here is how! Unplug the suspected injector and with a test light or noid light check at the connector with the engine running, if the light pulsates off and on, then the computer is operational. But before removing and checking the spray pattern of the injector, be sure the problem its not mechanical by checking the compression as I stated above. For further asistance you may contact me through FixYa.

Posted on Dec 27, 2008

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Mis fire on no 5


Check compression, but make sure you put injector in the right spot. Also double check firing order. Also gap on plugs. Did you drop one maybe?

Feb 21, 2013 | 1995 Mercury Grand Marquis

1 Answer

Code reader says 5cylinder mis fire changed plug changed coil pack still reading mis firwe 2002 envoy 4.2 liter


There can be other reasons for misfires beside spark plugs/coil, such as a bad injector, low compression in that cylinder, burnt valve seats.

Oct 10, 2011 | 2002 GMC Envoy

1 Answer

Engine is shakeing really bad


This is typical of a mis-fire. Check the spark plug wires to se if they are all connected and ensure they have no cracks or wear. Secondly, check the distributor cap and rotor for excessive wear and replace if so. Third, change the spark plugs. If this doesnt work it could be a mis-firing fuel injector.

Sep 02, 2011 | Ford Mustang Cars & Trucks

1 Answer

Dodge obd code p0305


The DTC (Data Trouble Code) P0305 is the generic OBD-II DTC for "Cylinder 5 Mis-fire Detected", and it means that the OBD-II control unit has detected a problem with the #5 cylinder.

The problem could be a faulty spark plug, or a spark plug wire for the #5 cylinder, or the coil for that cylinder could be faulty (2.7 liter), or the distributor or distributor cap could be faulty (3.0 liter), or the fuel injector for the #5 cylinder could be faulty.

Before you look for any electrical problems causing the mis-fire on the #5 cylinder, first do a compression check to be certain that the mis-fire is not caused by a mechanical problem.

Here are the firing order diagrams for the 2.7 and the 3.0 liter enginesto help assist you.


2.7 liter

c709010.jpg

3.0 liter

bf79aec.jpg

Jul 03, 2010 | 2002 Dodge Stratus

3 Answers

3.4 GM v6. dead skip on #4 cyl. Spark plug ok, wire ok, replaced injector. Still dead skip. Found cyl. by disconecting wires to injectors. #4 not affected.


The very first thing that you should do after finding a cylinder mis-fire that can not be easily explained such as a fouled spark plug, is to take a compression test especially of the mis-firing cylinder to be certain that the mis-fire is not caused by a mechanical problem, and I have seen people spend a lot of time and money trying to hunt down an electrical problem when the actual problem was a mechanical one, and no electronic part will repair a burnt or bent intake or exhaust valve.

Jun 06, 2010 | 2003 Buick Rendezvous

2 Answers

OBD system diagnostic trouble codes? what do they mean? P0123 P0138 P0205 P0305 P0300


po123-tps curcuit high---po138-02 sensor high volts bank 1 sensor 2,--po205--injector curcuit open cylinder 5,---po305-- misfire cylinder 5,--po300 random/multible mis fire,

Jun 02, 2010 | 1998 Dodge Caravan

1 Answer

95 Maxima Mis-Fire


Hello,the problem there is not a good spark in the compression chamber,so that it will develop a bad miss firing and you will not have a good acceleration.I advice you to change change all the spark plugs wire ,the wire lose the spark.Hope that help you

Sep 03, 2009 | 1994 Nissan Maxima

1 Answer

Reads codes of po300,po302,po303,po305


Hi these are mis-fire codes ,
P0300 is a general mis-fire detected code the others relate to specific cylinders,
P0302 is cylinder 2 misfire
P0303................3........
p0305..................5........
I would check your spark plugs first if Ok you need to make sure the coils are working ok for this you need an osciloscope to check output voltage if your not sure then take to a qualified mechanic with Cadilac experience it could be caused by an air leak,bad ECT sensor or even Mass air flow sensor ,codes only tell you the result not the cause

Jul 24, 2009 | 2003 Cadillac CTS

1 Answer

Misfire on no 5


check plug to #5 injector or bad injegtor

May 25, 2009 | 2004 Ford F150

2 Answers

2002 hyundai santa fe 2.7 multi misfire number 2and 5 cylinders


OK IS THERE IS ACTUALLY A mis-FIRE THIS VEHICLE SHOULD BE SHAKING DURING IDLE AND ACCELERATION IF IT IS, here is what you do get a noid light this used to check injector pulse. This vehicle will set a misfire code if injector is not functioning efficiently or bad. A noid light is like a test light bulb can be bought at almost any auto store.SART UP VEHICLE AND DISCONNECT THE INJECTOR WIRE TO THE CYLINDER THAT'S mis-FIRING AND CONNECT noid LIKE TO ELECTRICAL PLUG. DO THIS ONE CYLINDER AT A TIME. The nod light should have a steady flickering light/consistent pattern of flickering. If there is Gap/irratic flickering or no flickering BINGO you have found your problem. NO FLICKERING= bad/broken injector wire if not broken BAD COMPUTER/ECU. IF THE FLICKERING IS CONSISTENT /GOOD = BAD INJECTOR..replace injector and solve the misfire problem. However is all the components tested are ALL GOOD. Then the only other SOURCE for a mis-fire is the camshaft sensor that provides reference for injector pulse and the crankshaft sensor provide reference for Spark pulse. JUST ON A LAST NOTE: make sure all oils are getting electrical power to them. Good Luck I know this is alot of info at once. Contact me if you need more help. Thanks fr using FIX YA

Jan 08, 2009 | 2004 Hyundai Santa Fe

Not finding what you are looking for?
2005 Ford F-150 Logo

Related Topics:

57 people viewed this question

Ask a Question

Usually answered in minutes!

Top Ford Experts

yadayada
yadayada

Level 3 Expert

70387 Answers

Colin Stickland
Colin Stickland

Level 3 Expert

22041 Answers

Ron Lankford

Level 3 Expert

5386 Answers

Are you a Ford Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...