Honda Pilot random misfire SOLVED!!! PASSED SMOG!

[@tarumathu1]

My 2007 Honda Pilot misfire. I change spark plug and ignition coil. After seen this video I change PCV valve and it fix misfire. Thanks a lot.

[@waltersmith9366]

Thanks for posting this. Been dealing with all cylinder misfire codes. Going to try the PCV. Thanks again

[@beardedg500]

I couldn't ask on the other video because comments are turned off, but, the intake manifold top you took off , did it had Ani gaskets or they are metal to metal?

[@PeterZafra]

It was metal to metal.

[@beardedg500]

@@PeterZafra wow okok, best way to clean it? Any advice?

[@PeterZafra]

I didn't clean the gasket. Just remove carefully

[@daviddorsey5810]

Great video. My 2003 Acura MDX has all of the same symptoms. The VTM 4 Light and all that jazz. I did change the plugs, air filter, Valve alignment, timing belt, and plug coils so far. I think I'm closing in on the problem. I have 253,000 Miles. I agree, take care of it, it will take care of you and save you car payments!

[@PeterZafra]

David Dorsey if these don't fix the problem, you might need a valve adjustment. Cheers.

[@daviddorsey5810]

It had a valve alignment already. I think I'm closing in on it! What was the most difficult to do? EGR, Throttle body, PCV? I'm home this week on leave. Or, should I get a quote from Acura?

[@AlexYadel]

I adjusted the valves and spent $77 in new gaskets easy 🥵

[@Darkhunter218]

Thank you for your videos man, I haven't had any codes thankfully, also just passed smog but I went into my intake manifold and cleaned out my EGR valve and it took me like 30 minutes to pick out like 98% of the carbon from it. I also cleaned out my PCV valve but have a new one on the way, my 03 Honda Pilot with 268k was just having a bit of excess exhaust smoke, burning a bit of oil, and rough idle which so far seems to be fixed... hopefully with a little more TLC it will be like a new old engine again lol.

[@PeterZafra]

That's awesome. Glad all is well with your car. Cheers

[@ciscobliss4142]

Really great video with excellent explanation...really helped..my check engine light has been off for 7 days so far..awesome job!!

[@PeterZafra]

Awesome. Cheers

[@Dutchmaster412]

having the same issue in my 2003 Acura MDX. changed the coils (spark plug boots) and plugs...light came back on. I'm gonna do this 2mrw and hopefully the misfire goes away! thank u

[@PeterZafra]

Dutchmaster412 after doing all this and if the check engine light comes back, look into a valve adjustment. these honda engines are known for that too.

[@bap8195]

I've been to 4 different shops was told transmission leaking from main seal then right seal now I'm told it's not leaking but instead is leaking engine oil but don't know from where.😞also misfiring codes on all pistons at same time and cv axle boot needs replacing I'm so lost😥Mine is a 2006 Honda pilot with only 70,000 miles on it

[@PeterZafra]

aww man that's a bummer. hope it gets resolved since these are actually good engines.

[@bap8195]

@@PeterZafra *update* They replaced the right axl and boot or something,the valve cover gasket changed plugs and coils.Replaced air intake tube or something because whoever changed my filter last didn't unscrew it and broke it causing the engine to get air etc...It was a nightmare and costed $1,700.00😥😢I cried for days

[@mariodiy4517]

Did you have any live data on the fuel trims? Just curious what that would look like with a bad PVC and EGR valves.

[@PeterZafra]

Sorry I don't.

[@stevenphelps1072]

So I cleaned the egr cover along with an intake cleaner that sucks through the air system, new spark plugs, one new coil pack because one ripped on me when removing it, and PC valve, Still getting p0300- p0305 Have not done egr valve yet.

[@PeterZafra]

Once you've done all those and still pops up, you might need a valve adjustment. Unfortunately, these engines don't self adjust. Especially if you are getting a vtm light.

[@stevenphelps1072]

@@PeterZafra yeah vtm comes on every time

[@stevenphelps1072]

Light come on today says p0300 p0304 p0305 and p01399, I haven't done egr valve yet gonna try that and if it comes on again going to try valve adjustment.

[@Darkhunter218]

@@stevenphelps1072 did a new EGR fix it?

[@stevenphelps1072]

@@Darkhunter218 no light came on again with misfires 2-6 and a multi random, just did a valve adjustment at honda so now we wait and see.

[@bhi12455]

I have an ‘05 MDX currently at 273k miles, I always say the same thing - if you maintain these cars, they last! Honda /Acura is very reliable

[@PeterZafra]

Cheers to many more miles.

[@craigl4305]

Need some help here. Was having the misfiring codes and random misfire code show up on scanner without engine light being on. Today I did all the recommended things...replaced PCV and EGR and cleaned ports (it was pretty clean anyway). I also replaced all spark plugs but no boots. Started the car and did the idle relearn procedure as well. Really strange that now the engine light is on along with the VSA light and hazard light for the stability control system. Also, my car was jerky while accelerating on the highway. Is it possible there is now a vacuum leak now somewhere from opening up the top of the engine? The gasket was not broken or anything. Is it possible the PCV OR EGR I put in is faulty?Please help! This is our family car so I need to figure this mess out asap. Also, a new P0523 code popped up. States engine oil pressure sensor/switch - high voltage.

[@PeterZafra]

I haven't had this issue like you but try to reset by removing the negative terminal on the battery and replace after a few minutes. Make sure you replaced all the hoses at the same place and make sure all connectors are connected properly. Hope you get this resolved.

[@craigl4305]

@@PeterZafra thanks for replying so quickly! I just reset it again and did the idle procedure as well. So what's also strange is the cruise function won't work now either...I'm so confused. I double checked all connectors and checked that I didn't over torque the screws on the manifold cover as well. I'm so confused. Could I have caused a vacuum leak? I figured that's what's causing the jerky hesitation when accelerating. Also, I checked all coil packs and all are working.

[@craigl4305]

@@PeterZafra fixed it! So I didn't know you couldn't put after market parts in hondas...especially electrical! I put the original EGR valve back in as my car didn't need a new one and put a Honda PCV valve in. Also, there was a loose plug in the back that I fixed. Did the ILP and all codes are gone!

[@Chachh_]

I have a 06 pilot 2wd i did valve adjustment and its still coming back . I changed pcv valve and sparkplug what noww keep getting p0300 all cylinders misfire

[@PeterZafra]

Have you changed egr valve? Cleaned out egr ports (plate on top of valve cover)

[@Chachh_]

@@PeterZafra no in gonna clean the ports tonight then change egr valve if it still throws code. Can the egr valve be cleaned as well ?

[@Chachh_]

@@PeterZafra i cleaned the ports and passage ways . Wasnt bad really . Still misfiring ill try egr tonight

[@CRAPO2011]

@@Chachh_ what did it end up being, bad coil?

[@axjohn]

@@PeterZafra do you think that some of the EGR valves from Rock Auto can be used on Honda’s or should we only use Honda EGR valves? I have a 2006 Ridgeline.

[@danlatu209]

An oil catch can will also help keep the intake manifold, valves, pistons, spark plugs and egr system clean. My ridgeline runs smooth. If the pcv is clogged, it will cause oil leaks and engine surges.

[@starguy39]

I have a Honda Pilot 2003 with the code P0401 (Exhaust gas re-circulation flow insufficient detected). The VTM-4 and check engine lights are on. I have replaced the two O2 sensors and EGR valve new, and several times cleaned the egr ports. The sparks plugs are new. What the problem could be on my situation.

[@PeterZafra]

delmar you might need to get a valve adjustment. I ended up doing that with this car and it completely went away. This car has over 200k miles

[@stevenphelps1072]

Did you need to replace the gasket on that egr top cover after you cleaned it? Thought i read somewhere its reusable?

[@PeterZafra]

I did not. Just be careful not to break it. Its aluminum so its pretty sturdy but just be careful. Cheers

[@Redridininyohood]

Ive always had luck using copper spray to coat any exhaust gaskets. It creates a carbon seal.

[@axjohn]

@@Redridininyohood what do you mean copper spray? Do you have a link?

[@Redridininyohood]

@@axjohn most local part stores will have it. But ive had really good luck using it on all my exhaust gaskets excluding donuts. Even on new installs. Learned this on one of my honda cars when using online parts. I also get that exhaust paint and spray all the welds real nice. Helps things last. Also I reused my egr gasket cus it came off in one piece but i hit it with this copper spray on both sides. Wire hanger or wire works great👌 shop.advanceautoparts.com/p/permatex-copper-spray-a-gasket-hi-temp-adhesive-sealant-10-oz-80697/7160111-p?c3ch=PLA&c3nid=7160111-P&adtype=&product_channel=Online&store_code=&msclkid=0722fc5b9ba917cb9ebd9cf6e740faf6&Fadhesives%2Fand%2Fcompounds_sealants_gen_gen_all_pros_aap_us_all&Bing_LIA_Sealants%20Adhesives%20And%20Compounds_Sealants_Gasket%20Sealants&gclid=0722fc5b9ba917cb9ebd9cf6e740faf6&gclsrc=3p.ds

[@stevenphelps1072]

My situation is had 5 cylinder misfire codes, changed plugs and one coil that the rubber boot tore off. 1 week and a half later engine light for a p1399 random misfire, runs fine, idles fine so what should i look at? Pcv valve?

[@PeterZafra]

Depending on mileage, check on getting a valve adjustment. Are you getting a VTM light?

[@stevenphelps1072]

I have 190k miles on it, and no vtm wasnt on, it was for my cylinder misfires though, im trying to avoid valve adjustments if necessary, i still need to pull my egr cover and see if it is clogged like yours

[@PeterZafra]

With that many miles, for sure it is. Random misfire points to a lot of different things. Not specific cylinder. Try cleaning the egr ports because that can cause a mis for sure. But if it keeps returning especially with a vtm light, then a valve adjustment might be inevitable. Cheers

[@masterofnonetv8361]

Is there a gasket under that plate on top of the motor that has the egr passages? I cant find anything.

[@PeterZafra]

Yes. It's an aluminum one. Be careful removing it.

[@monstrxusgt4544]

By any chance, was your pilot have a shaky feeling when you were inside the car? Like you felt it in the seat mostly?

[@PeterZafra]

Yes. Only when the VTM light was on. Then it went away when it was fixed.

[@monstrxusgt4544]

How did you make it go away? What part can change that?

[@jamarcusjohnson5590]

Hey Peter, thanks for the video. I have a quick question. Did you use OEM Parts? Or aftermarket from a local auto parts store?

[@PeterZafra]

On this one i think i used aftermarket but i highly suggest oem if you can afford to.

[@jayhernandez6812]

hi i have 2006 honda pilot and start in morning air idle shake so i have to warm up good when the car is warm idle shake no problem but when car sit again for long time warm up again so idle won't shake. Car is not dying just only when car is cold specially morning idle shake but like i said when car is warm no idle shake problem. What can i do to fix this please help thanks?

[@mkrp4]

Valve adjustment must be attempted first (for tight exhaust valves)

[@elpollo980cantoran9]

Pudiste arreglar tu problema a mi honda pilot 2007 le pasa lo mismo

[@eyeyron5007]

This is similar to my friend's 05 acura RL. The codes are p0300, p0303, p0305 & p0306. The car has 92k miles. We changed the plugs on 3 cylinders but the light didn't go away after driving for 20 miles. We haven't changed coils. The car runs smoothly but kinda chokes when starting the car. What could this be?

[@PeterZafra]

+Aaron Agsalud most likely will need a valve adjustment.

[@JustMe-fl1db]

Thanks for these vids! Question, was your evap test not completing? My scanner constantly says evap not ready. Besides that I am having the same exact behavior as yours.

[@PeterZafra]

no problem. evap system isn't always applicable on these cars. if your car always pops the vtm and Chek engine light and you've done all these things that I did, you might need a valve adjustment.

[@jayhernandez6812]

Yes i did valve adjustment the code 172 and 175 misfire went away no problem now thanks.

[@Cr1m1nalspeed_1]

Jay Hernandez How much did they charge you?

[@JeremyAnnis-qk7cc]

To reset the computer all you need to do is pull the negative off the battery for 15 or 20 minutes then reconnect the negative cable

[@christianrivera9886]

Have this code with a vtm light on too...any suggestions?

[@PeterZafra]

Most likely, a valve adjustment. Costs around 600 in the dealership. In the end, it's what fixed this issue with this car. After doing all this work, the light would go away, pass smog, and eventually the issue would come back. Not until the valve adjustment that it completely went away.

[@OjChicken102]

@@PeterZafra So what actually solve this engine misfire problem is a valve adjustment? Is it necessary for the valve adjustment if only the check engine light is on but not the VTM light?

[@papo862]

i had a random misfire p0300 with 4,5,6,2 cylinder misfire i had visible leak from the power steering pressure hose i replaced the hose and the codes are gone weird 05 honda odyssey

[@PeterZafra]

Wow. That is weird. Glad you fixed it. Cheers

[@papo862]

@@PeterZafra will be replacing the PCv and other things mentioned in description thanks for the upload 👍 subscribed

[@ashifpa85]

my 2008 pilot shows the same misfire codes. so should i go ahead and do the valve adjustment so that i dont need to worry about any of these? or do these steps along with the valve adjustment to get it completely fixed?

[@PeterZafra]

Ashi if you get he vtm code and random misfire codes, you might want to consider the valve adjustment. of course there's no guarantee but in our case, it fixed the problem. never had the problem again.

[@ashifpa85]

honda dealership is asking for 550 for valve adjustment and 100 for software update. i am confused of it is worth. or ignore the engine light on. but i am not sure this could lead to some other problems later and end up in paying more.

[@PeterZafra]

+Ashi I don't remember a software update for the car but the valve adjustment fixed the issue of vtm and random misfire. 550 is a decent price for valve adjustment. Try looking for an independent Mechanic.

[@ashifpa85]

i just noticed that i didnt fully inserted the oil dipstick when i checked the oil last time. do you see if this could cause the misfire codes to pop up?

[@PeterZafra]

+Ashi no it won't cause a misfire.

[@mjmalaske]

I'm getting random misfires as well. Car runs fine aside from poor gas mileage. The VTM 4 light does randomly come on as well. I changed all plugs and coils. No EGR build up. Anyone have similar?

[@PeterZafra]

You might need a valve adjustment.

[@teacherleo2147]

Need help please. My Honda Pilot 2004 runs smoothly and nice then suddenly stalls like it's running out of gas but then runs smoothly again. Went to AutoZone these are the codes P0206 P0300 P0132 P0204 P0202 P0132. Where should I start? Thanks for your help.

[@PeterZafra]

Those are random misfires. Did you do anything before this started happening?

[@teacherleo2147]

@@PeterZafra honestly I bought it running good. Suddenly started like that

[@-g.k.4389]

What is a good code reader, I'm looking to buy one on Amazon

[@PeterZafra]

I've had this for 20 years. You can get any obd2 reader and they will all read codes for you. Cheers

[@jackiecastro3222]

Does anyone know a possible problem to my car ? (2006 honda pilot) It has a check engine light with multiple codes : p0305 p0306 p0303 p0300 also the VTM 4 light is on

[@PeterZafra]

Valve adjustment

[@jackiecastro3222]

Peter Zafra thank you !!

[@PeterZafra]

If you have tried cleaning the egr ports, plugs, egr valve, still have these multiple random misfire and vtm light, a valve adjustment most likely is needed. Cost around 600 bucks but will fix the problem.

[@JohnDoe-ek7ic]

Peter Zafra I recently did a valve adjustment an it gave me way better gas mileage it ran fine for a day or two but now is misfiring again is there anything I need to do after adjusting my valves like resetting the computer

[@keunhyungkimswim]

i have a 2005 honda odyssey it same p0300~0307 all misfire issue i dont have idea. that is worst issue ever random misfire,,i thought i will try to clean pcv valve and egr valve.and replace spark plugs.. do i need more?

[@PeterZafra]

+KEUN HYUNG KIM when it's random misfire code, that usually points to dirty egr ports or possibly a valve adjustment. Check to see if your egr ports are clogged. I made a short video on it. I'm not a 100% sure that odyssey and pilot have the same engine but possible. Hope that helps. On this Honda, I ended up getting a valve adjustment to get rid of the random misfire code.

[@keunhyungkimswim]

I hopefully if egr issue be happy. But what is valve adjustment? Pcv. Egr. and many of the valve there. Thanks

[@PeterZafra]

KEUN HYUNG KIM valve adjustment is a pretty big job that requires taking off the top engine cover (valve cover) an experienced Mechanic would need to do that job. hopefully that's not your case.

[@keunhyungkimswim]

I got it good to know. Thanks

[@XXYY2959]

how many miles did your car have when you went through all this

[@PeterZafra]

XXYY2959 over 225k for sure

[@XXYY2959]

thanks for the quick reply

[@eyeyron5007]

I thought your random misfire was solved through cleaning the list above? Did you eventually do a valve adjustment and solved the issue?

[@PeterZafra]

+Aaron Agsalud hi. Yes. This solved the problem enough for the codes to clear and pass smog. However, these motors tend to need a valve adjustment. Once that was done, it completely went away. If you get vvti light, most likely you will need valve adjustment.

[@craigl4305]

IMPORTANT REMINDER: ONLY EVER USE HONDA PARTS!!! NEVER USE AFTER MARKET, ESPECIALLY ON ELECTRICAL PARTS! My 2008 Honda Pilot EX basically rejected the after market PCV valve I put in so i replaced with Honda one ($50) and all codes are gone! My EGR was fine so I didn't replace that but I replaced all spark plugs and good as new!

[@scientist100]

Parts cannon guy lol, good luck all.

[@trashybaby3353]

That's so cool It help so much :)

[@PeterZafra]

Cheers

[@willywonka2005]

replacing the egr was probably the culprit

[@jeanpaulkapongodealmeidatr6263]

it’s still coming back after all this

[@PeterZafra]

Is your VTM light on? If you've done all this and your vtm light is on, you might need a valve adjustment.

[@manueld2517]

me sirvio tu video.