How to fix coil on plug misfire

this segment i wanted to address how to diagnose a misfire problem on a coil on plug ignition system. this video shows the simplest way to find the problem using no special diagnostic tools or equipment. enjoy!

Category:

Autos & Vehicles

Tags:

• willieb66
• autohowtovideos.com
• shadetree
• mechanic
• howto
• volvo
• s80
• ignition
• misfire
• diagnose
• fix
• repair
• coilonplug
• sparkplug
• check
• engine
• light

[crownviclvr]

im having the same issue but some people say injector and im throwing misfire codes? 2000 crown vic 4.6

[willieb66]

@crownviclvr I've never seen an injector go bad on a 4.6. of course there is a first for everything. those engine are really bad for coil failures, coil boot failures, and plug failures. try swapping some parts around like shown in this video and see what you come up with. If you do find a bad coil make sure you replace the plug on that cylinder!! remember use only motorcraft plugs and coils.

[georgelopez22]

To: Willieb64

I have a 07 ford F-150, and i just changed the spark plugs after that the check engine light came on. i got it scan and they said it was P0420 code. Catalyst efficiency low bank 1. Probable cause: (1)Catalytic converter defective (failure possibly due to # 2,3 or 4) ( 2) Engine misfire or running condition. An associate from a auto parts said it was the fuel injectors, i think is some thing else. Can you help me?

Thank You.

[willieb66]

@georgelopez22 i have a feeling this may be a little bit to in depth for diagnosis over youtube but we can give this a shot. was or is the vehicle running bad? if so this will cause catalyst deterioration. 90% of the time a P0420 code sets when the converter is indeed bad. catalytic converters are covered under a U.S. federal emissions warranty for 8 years and 80,000 miles! which means if your converter is bad Ford must replace it at no charge! i suggest ford diagnose this problem. Willie B.

[frank0067]

bought new plugs for chevy venture V6 1998 when installed them i got misfire on cylinder #1, changed plug and wires set . got same thing #1 misfire..everything always ran ok before until the new plugs went in.. they are one of the highest watt plugs anywhere..but company said should be fine . OIL looks clean, coil has spark..

IS it injector? or these unusual plugs?

[willieb66]

@frank0067 put the correct AC Delco plugs in it and recheck. if your problem still exists we'll go from there......

[mamamelki]

I've had a hard time finding an honest mechanic. Thanx Willie you show interest in having happy customers by showing us how on youtube. Hope you get a lot of customers. Your video helped a lot.

[latoywri]

I was gonna get charged 150$ for something this simple? SMH!!!

[crownviclvr]

i went and did your test it all checked out good on the crown vic and now its saying cyl 3 and 7 missfire and tune up isnt even a year old yet



[9393DJCobra]

is that basically a spark plug wire? or are coils and wires completely different?

[evilscorpio05]

Thank you willie!!!

[imjustpassinthru]

Now charge 'em $412.74!

[fastlenny69]

Great video. I have an S80 I just got today and its a 2000 with 120,000 on it. Has been taken care of pretty well and is clean but the engine sounds like the one in your video when you pop the hood, are the S80s supposed to sound like this? The car runs good otherwise, full power and drives smooth.

[Liamautomechanic]

good vid willie,