Engine Misfire: Ohhh RATS! Not what I thought! 

I've watched quite a few of your videos as an engineer and technician I'm very impressed. You do a great job of keeping the audience up-to-date with your troubleshooting and how you arrive at each decision. Your troubleshooting is methodical (you don't easter egg) and takes into account access to troubleshooting points. Your code reader rocks (and yes it did set you back a pretty penny). I'm a DIY kinda of guy, but I also understand that I can't have every tool and believe that having the right tools for the job and break or make the deal when it comes to fixing and repairing. I value good workmanship, but also acknowledge that sometimes an intermittent fault can be very difficult to diagnose and fix. Sometimes replacing a component doesn't fix the problem and you have to go back and have it looked at again - and we shouldn't necessarily blame the technician. I find myself learning something from every video you make, so it is not wasted time. Thank you for the great work! Keep it up! BTW - I need to start selling you brake cleaner....you use a lot....but it's clear you go the extra mile and in my book that means a great deal. If I lived closer you would be my mechanic of choice.

You read my mind about those spark plug gaps. I really have to compliment you on your filming ability. It's always easy to see what you are doing even in difficult situations. I wonder if you were to include the model of vehicle and the repair in the description that you might get more clicks from people wanting to do the repair on their own. I know I have personally used youtube videos to help with repairs I do and yours are way better than most.

Ps. I love how on just about every job you do something just a little extra to ensure good maintenance even if it’s on something it’s not there for. So hard to find a mechanic that goes even that extra 10 seconds. I’m a big DIY guy and sometimes I just don’t have the time or knowledge to do something and it’s so hard for me to take it somewhere. But I’d definitely trust you with my car in a heartbeat

Thanks again Ray for the video. As a 73 year old ex oval builder and racer I am still learning tricks of the trade In vehicle repairs although must admit i no longer do as much as i used to, but, enjoy watching and diagnosing or at least thinking about whats wrong as you go through the check list then resolve the faults. It keeps my tired old brain ALIVE.. lol - STILL a petrol head (Ok also a diesel head) here In the UK..

i'm always impressed on how you remember where all these hoses get hooked back up to....

when i was a kid one of my grandfathers taught me to use a long-shafted screwdriver as a stethoscope. it was amazing what i could, and sometimes didn't, hear. a great diagnostic tool. totally analogue. no moving parts. THANKS, GRANDPA!!!

Perhaps your very best video. Highly precise and accurate. No falling fastners, no failures. Just good, efficient repairs. Well done, and most educational. Thanks.

I've watched your videos for several weeks now, and I've finally plucked up the courage to fill up my wife's washer bottle. 👍👍😂

I was familiar with the earlier engines (50s-60-70s) and you going thru the engines the way you do is very enlightening for me. Thank you.

You breezed through that engine tear down and reassembly. I'm super impressed.

The rodents know when a car is not driven everyday. This person had disabled placard. It's a expensive problem when they eat the soybased wiring. Great Job Ray!👍👍👍👍

"Put this where it belongs" Me: In the trash.. Ray: *sets in center console*

My morning cup of coffee and Rainman Ray, makes for a good day.

I wish there was more mechanics like you I don't trust mechanics because they scan people And you are very honest I've been watching your videos for a very long time I wish there was more mechanics like you unfortunately there's not

Ray, love your channel and your vids, man! I'm not a mechanic, I'm a DIY'er and rarely take my car to the shop unless I have no other choice. I've learned alot about tools, techniques, and patience watching your videos. I also learned that I need to "up" my tool game a little. Ordering a few things off Amazon including better clamp pliers and the caliper spreader, as well as a good electric ratchet. I usually use and air ratchet, but the electric seems much more flexible, especially in tight places. Thanks for all you do, and for sharing your work. It makes a difference to shade tree mechanics like me!

Hey Ray! Big fan! I didn't know there were more people in the world that are as goofy as me, especially mocking the phone ringing lol. With that being said, you're attention to detail never ceases to impress! Doing the right thing every time seems to be getting lost in some trades. If I can offer one thing, when you're tired of "doing", please teach. You have a natural talent for it and you could influence so many new mechanics with your awesome work ethics!

Missfire counters are under Functional Tests on the Snap On tool for Mopars.

Did a 1/2 brake job on my car this weekend. Just got rotors turned due to rust from lack of use and when I tightened the bolts for the brake hardware I said without thinking..."CLICK".

To assist you in the future, the misfire counter is under System Tests, then Which Cylinder is Misfiring. Another great diagnostic adventure. Thanks sir! 👍👍

Literally this guy is the only guy I would let fix my veichle if I went to a shop I’m a mechanic also and he is like me detail oriented

i love your content because its methodical and shows the whole process. too many mechanical videos make shit look like it takes 10 minutes lol

I’m extremely impressed by your work ethic! Your videos are well done, informative and entertaining! I just wish I was in your area. Keep up the content! I’m hooked!

It's amazing, how much plastic is used in engines now! 😮

That being a Chrysler. Switch the ignition key on and off 3 times. The 3rd time landing in the run position. Don't start the engine. The codes will appear on the digital mileage indicator.

Where is this guy located, he needs to be my go to mechanic, learning a lot from him as well. Keep It up brutha!!

The click and tippy tap tap sounds are universal language.

We have problems with Pine Martens here in Greece 🇬🇷. Eaten main wireing loom in my Isuzu . My wife had the entire bonnet insulation eaten plus half of the fire wall insulation in her car. Dryed pine marten crap and a haft eaten rat nice. You have a good day 👍

Thanks. I always appreciate knowing the mileage of the vehicles you're working on.

It had to be a relief that none of the wires were chewed up. Just mechanical issues, not rodent related. You always make the jobs look easy. I guess doing this job every day would make it just a walk in the park. Occasional backyard mechanics (like myself) would cringe at the idea of tearing into something that someone else diagnosed. How could I trust their diagnosis? Experience is the key! Good video! Thanks for sharing the information!

Spent so much time under the hood of my Jeep, I immediately recognized that 3.6 pentastar.

That's a good point about the risk of a vacuum leak from a port fuel injector seal, I never understood that. Of course. Fuel won't necessarily leak out, if the seal between the injector and intake manifold is sucking air in. Manufacturers made diagnostics so much more difficult when they decided to hide injectors underneath the intake.

Always impressed by people who know their stuff. Have to agree with others comments thou. While apart, replace all o rings, saves a job later.

I would liked to have seen a continuity test of the old Injector and verification of power and driver availability at the injector connector. Prior to Shotgunning a part.

good tip for when you have open runners like this, cut some cardboard to shape to stick over the holes. its saved my ass before now

Wow...that was a lot of unwanted crap. i would have sprayed the areas down with brakleen or similar...that stuff would surely kill any unwanted disease left by the critters. A great video as always Ray!!

Rainman Ray's Repair...chrysler misfire data should be found under functions in ur scanner ...just helpful advice. Love the channel

Great repair I was surprised they didn't eat the injector wires also so they used that engine as a next Not a food source which was nice jt was just a faulty injector @Rainman Ray's Repairs

ANOTHER OUTSTANDING REPAIR! Roger in Pierre South Dakota

Awsome videos Ray I came across your channel one day and I can't stop watching very informative. Your knowledge is impressive can't stop watching. I would bring my car to you any day unfortunately I live in Massachusetts where you get all 4 seasons in a week lol

Another good job. Yes I would have guessed rats or what ever had ate wires. Enjoyed

I was happy to see a car owner do the right thing and have the work done. It kills me to see you diagnose and the owner decline the work.

I would always check each spark plug for gap. I takes one minute to confirm the gap.

I have a 14 charger with the same engine, have always been a pro taking off both intakes but was always scared to mess with the fuel rail but now i know its so simple thanks!!

That one is faster than ours 🧐 On another note, hopefully you feel better 🙂

Based on the look of the bottom of that injector, I personally would be tempted to replace them all, or the rings at least. Nice video, it's always the back row, isn't it?!

@20:18. whenever I remove the fuel rail and do not know the age of the o rings, I change all of them. they can be deformed over the years from heat

One day I went out to find my 94 ZJ Jeep running incredibly rough. Looked under hood and found rodents chewed up a bunch of hoses, wires, and the MAF sensor pigtail [from engine wire harness] right down to the plug. All together they affected at least 5 systems in my engine. For less than $30 I was able to buy new vacuum hoses, connectors, and plug end for the injector coil, but I couldn't buy just the pigtail for MAF sensor and new one didn't come with new pigtail. Until I could get to a junk yard, I had to figure out how to take plug end apart and re-solder wires directly onto the pins inside the plug. Totally did it, all the while it was below freezing outside. After I got everything reconnected engine worked perfectly!

Love your videos. I was an auto technician years ago and I can appreciate your level of skill (very high). One thought though. I don't know if it's prevalent in your area, but you won't get rabies from rodent droppings. However, you can get Hanta virus. It's rare, but can be fatal in some cases. Many patients were infected from cleaning up mouse or rat droppings. I'd hate to see anything happen to you. Good techs are hard to find.

I always start the threads by hand I don’t wanna cross threads anything. It a good advice too

YOUR TOOL COLLECTION AMAZES ME,.

Good to get the plugs changed as well

You ate a good mechanic I like watching 😊thanks

This helped me lots, I have a 2012 dodge journey rt with the same engine and with multiple misfires (1, 3, 5, more prevalent on first cylinder)

Tech tip......always check for injector AND coil codes.....because on that engine, if the coil is out of range, the ecu will shut off the injector for that hole

Always check the oil filter housing and cooler unit under the lower intake manifold for oil leakage into the engine valley on the penta stars! FCA has made updated units as well as better seals for newer engines with the latest housing design that still leak. I just had to do a 2017 caravan! Only put seals and so far so good...something to look for anytime the intake manifold has to come off. Nice work and video!

I'v done a lot of work on the Pentastar v6, but I noticed when the fuel injector is bad there is a black liquid substance that drips from them. The only thing I can think of is poor fuel care or the plastic fuel rail is breaking down within the system not sure. Great job man!

You vacuuming all that debris reminded me of the movie Tommy Boy. David Spade vacuuming up the moths in the hotel room. "Can we get any more moths in here?"

Hope you feel better Ray. God bless

Good work fella! I've watched a good bit of your videos lately. You always learn something new even being a car person. Greetings from the land of vikings :-) BTW have a speedy recovery

Nice job bro..Great skill's and a great attitude.. I just like to watch you work. My days of wrking on much are over..Wish you were in my burg I'd have you wrking on ALL my Junk !! Lol ! Keep up the good work ! I give all yer vids the thumbs up !

Textbook troubleshooting with the scan tool. Well done. Iridium spark plug gap?...measure and make a note. Otherwise, leave them alone. But all the shade tree mechanics say 'gap them', wrong. This is 2021 not 1993. Those are the same people that say ignore the engine oil spec, just use what's handy, close enough...

Get well soon !

Another good one Ray to enjoy with my morning coffee. Feel better.👍👌

This channel is fantastic!

As soon as I saw" misfire" I knew you'd be working on a Chrysler product

"People need to get a cat." We had a cat get under the hood once. ONCE! OMG it was a mess!

There's going to be some very angry rats, who climb back in and say "HEY! who stole all our fuzzy nuts? We worked weeks to collect all those"

Is it just me or does most of his videos have all similar like counts? lol Enjoyable content sir. 👍

I hope you get over your respiratory ailment, Ray. When that happens to me, I usually end up with full blown bronchitis. Take care of your body, because you're going to need it a very long time.

Have a better day Ray Ray

Thanks for making another great, informative video. The gear stick next to the steering wheel is such a weird place. It'd be annoying. I'm sure many people have accidentally whacked it when they go to indicate or change something on the stereo. I hope you warned the vehicle owner about potential damage from leaving their OBD 2 reader in the OBD 2 port, or it could be a lesson of letting people learn from their own mistakes.

Get well soon, as you probably did already !!!

"Limb Rats" I believe that's what left all the debris.

Working on boats we would get boats in for "Summerizing" and usually had a boat or two that had mice in them over the winter. What a mess.

Thanks, this helped me on my 3.6L Jeep Wrangler!

Thanks for the video. Have a great day

It is important to note that dielectric grease will melt silicone rubber over time, and thus should not be used on connectors, such as o-rings, that are made of this rubber. That was from Permatex directly just a heads up...

had the same problem with rats and palm nuts on my wife's 2006 Commodore Omega (GMH) here in Queensland Australia (same climate as Florida) , fortunately they hadnt chewed the wiring ......just made a hell of a mess using the space under beauty covers as a food storage bin , nasty little bastards lol

I forget you're not in the rust belt of the Northeast/Midwest. We never-seize EVERYTHING before reinstalling.😁😁

The Hyundai assembly plant in LaGrange Ga. had 100 acres of new cars waiting for the “chip”. While waiting for the part, field mice destroyed ALL of the vehicles by eating the wiring!

The Customer should solve their rat problem with a "Automotive-Approved Rat Trap" and some "Under hood Peanut butter Bait".

Nice job, good diag. Nice that people agree and want the work done. You get handed out decent work to make money on. Never forget how important that is. Some places are like a dry well because of wrong attitude. You get that feeling of having done the car some good and helped your customer. Blessings to you.

I had a minivan once and went out to go to work and the engine had a terrible misfire. I opened the hood and a squirrel was sitting in the engine compartment and flew out. I saw small bits of plastic wire insulation all over the place and found that he had chewed through 3 of my 6 fuel injector wires. I had to get my soldering iron out and repair them. I still made it to work on time but barely.

I'm sorry you're not feeling well, I hope things clear up soon!

Lol "you people need to get a cat !" Priceless

you make it look so easy

Great video Ray. You are very good at diag and thorough. You could work on my car any day. This job was easy but I have seen you tackle much worse.

"Come back, socket" - To every 10mm ever.

Looks like Fivel has been busy under the hood again😆😆😆

I had a 2016 Chevy Colorado with the 2.8L Duramax get a rat infestation. Insurance covered the repairs I only had to pay insurance deductible. over 2,000 in damaged wires and insulation, most of the cost was labor hours.

Thanks for a great video , have a great day!

Too bad you don't live near me. We need honest guys like you to repair cars around here in Alabama.

good work i wish i could learn troubleshooting and the great work

Almost 50,000 subscribers!!!!!

Ray I always check for injector pulse on these guys, before doing a injector replacement. I have see more than one with a blown driver in the computer from a shorted injector. I have also see the coil packs short and blow the driver in the computer.

I have got taking that intake off down to a art because all the oil filter housing that leak on that motor. And ofc Walmart oil change places beaking parts in the housing.

You are a first class mechanic. well done. I did my tune ups on my 68 Fury when I was a kid. A whole lot easier.

Great video. I did notice that one of the clips that stabilizes the radiator hose against the intake was missing (you attached the other one). Only assume it was missing before the repair.

Pulled all 4 plugs in the used car my son bought. 2 were factory original. 2 were much shorter and for the 6cyl engine. Still ran fine with 2 wrong plugs, but gas mileage greatly increased with 4 new plugs.

I hear you about breathing the aerosols. I get the same thing from fumes which then turns into a sinus infection.