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Truck STARTED MISSING.. we replaced spark plugs, the coiil pack and , and now finally, the fuel injector plug and it's still missing

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  • 180 Answers

What kind of truck?????????how bout some info.

Posted on Dec 31, 2013

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Posted on Jan 02, 2017

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SOURCE: 2002 ford ranger 3.0 is missing on 2 cyl plugs ok injectors ok new coilpack

do a compression test,as the intake manifold,like alot of fords is no good.

Posted on May 22, 2009

  • 617 Answers

SOURCE: i have a 2001 f150 super crew 5.4L.its missing

Yes sir, oil on spark plugs caused by seal of valve cover, which will cause misfire, replace yor valve covers

Posted on Feb 11, 2010

SOURCE: 99 chevy 1500 5.7 missing on 3 4 6 replaced tp,

Not much else it could be you have renewed just about everything. How about the coil sets? How healthy do the sparks look? try swapping some the faulty cylinder coils around with those that are good and noting the shift in misfires. The coils get hot and suffer over time. I think if you examine the sparks from each plug in turn you will see big differences from good to poor. For safety disconnect the fuel pump relay when checking the spark we don't want any fires.

Posted on Sep 18, 2010

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Hi,i have a 2005 4lt v6 4x4 courier petrol was running fine started missing changed spark plugs crank sensor cam sensor coil pack computer still not running properly only running on 4 cylinders.


you have changed all the electronics but that is half the problem
misfires are from low fuel pressure , faulty injectors/tips , wiring to the injectors and ECM

May 11, 2016 | Cars & Trucks

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Jeep engine troubleshooting


run fault codes and you will find that missing is also from faulty injectors, mechanical faults, low fuel pressure and not always spark plugs and leads

Dec 23, 2013 | Cars & Trucks

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Changed spark plugs ht leads and coil and still the car is missing when i drive it wot am i missing


With the miss you have it could be a few things.
did you change all the coil packs?
did you refit the heat shields to the new spark plug needs as these can cause a miss .
it could be the electronic module under the coil pack.
it could be a faulty injector or fuel problem..

Aug 31, 2013 | 1998 Holden VT Commodore

1 Answer

MISFIRE ON CYLINDER 4 AND 6 WITH AN ENGINE LIGHT ON


Check the coil packs on the plug if equipped with that type, or the coil packs at the end of the spark plug wires, if so equipped.

Also, check that the fuel injectors are firing on all 8 cylinders.

Definitely, check out what other codes are stored in the computer besides a missing condition.

I have a 1999 Expedition that had a miss on a cylinder, and it turned out to be a bad coil pack. You have 2 cylinders missing, so I would check each cylinder for good spark, or replace the coil packs as necessary to see if that resolves the problem.

Good luck on this repair.

Dec 31, 2010 | 1997 Ford Expedition

1 Answer

4th cylinder not firing but have visualy seen spark by plug...replaced spark plugs...spark plug wires...coil pack...thought maybe cloged fuel injector...replaced,still missing and engine light on


have check engine checked at an autozone for free. it could be an egr valve or a stuck lifter or numerious other things testing needs to be proformed to narrow it down.

Dec 26, 2010 | 2003 Dodge Neon

2 Answers

MOTOR MISSING LIKE NOT GETTING GAS OR SPARK PLUGS NOT FIRING I REPLACED FULE FILLTER AND CLEANED SPARK PLUGS BUT STILL MISSING


Hello,
I would check and find the dead cylinder(s) and determine if its spark related or fuel. You can do this by removing the plug wires one by one with insulated pliers. Note: Pull the wires loose first with the engine off and take caution not to tear the boots. If you remove the plug wire and here an arc snap noise and it doesn't change the way it is running you know 2 things you have spark and it's one of the cyls that are missing. If thats the case look for a lack of fuel or bad compression. The injectors If this is a Vortec early stile it will have popet style injectors. The popets plug up and cuse a no fuel situation in that cylinder.
Check it out and let me know.
Roy

Nov 15, 2009 | 1994 GMC Suburban

2 Answers

2002 Ford Tarus intermittant missing cyl #3 after tuneup


I would remove one plug at a time, plug it back in wire and lay on top of engine block. Have some one crank and look for spark. Do this for each plug. If 1 is missing. You have bad wire. If two sparks are missing, then you have bad coil pack, if 3 is missing, you have two bad packs or bad module, if all cylinders are missing, then module or cranks sensor is faulty. Dont forge to change those plug wires just as often as plugs. They may look good still, but they get weak

Sep 11, 2009 | 2002 Ford Taurus

2 Answers

Check engine light is on, engine weak and missing


put a screw driver into the plug that you think is missing get it one forth of an inch away from a good ground and crank the engine over if there is spark try replaceing the plug or plug wire or both, and if there is no spark if that model has a distributor replace the cap and rotor and wires otherwise if it has the coil pack you will have to change the coil pack.

Aug 20, 2009 | 1998 Ford Explorer

2 Answers

Miss on # 3 cylinder


Check the plug and plug wire to #3, if they are ok test the fuel injector and test the compression on that cylinder.

Nov 09, 2008 | 2002 Ford Mustang

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