2005 Dodge Dakota 3.7 Valve Seal replacement 

Me alegro de que haya ayudado! (I hope this means “I’m glad it helped” but I’m trusting Google translate.)

Check the PCV system real carefully. On this truck, the valve stem seals were the issue, but if you aren’t seeing smoke during cold starts or after idling a while, my next guess would be the PCV.

@@RedeemedMechanic thanks. I replaced the PCV valve itself, and there was no change. I’ve heard there’s more to check. I’d really appreciate your thoughts. Maybe make another video showing how to check the PCV system? 🤔

Yes it did. Engine still runs great. I just saw this vehicle the other day for other reasons.

I had to remove the brake booster. The little tool just wouldn’t clear otherwise. A small glob of grease on the blade of a small screwdriver was the best method for sticking keepers back in.

@@RedeemedMechanic thanks a lot I will try this Tomorrow 👍🏼

@@RedeemedMechanic thanks that helped a lot 👍🏼

I ended up removing the booster. It was just a hair too tight to access the back two rockers.

@@RedeemedMechanic Awesome, i appreciate your content also!

@@tyrantdragon000 thanks!

Valve guides are usually changed at the machine shop. You need a drift for the specific guide size. And you usually push them out from the combustion side of the head (if they can be driven). Otherwise, if they can’t be pressed our, you have to drill or ream them out with a precision bit.

No they merely seal oil out of the cylinder. Those seals should never even see compression because the valves are supposed to seal them off during the compression stroke. However, the rocker lash adjusters can cause misfires if they are bad, because the valve may not open fully. If you find low compression, before you tear things down too far check those lash adjusters.

@@RedeemedMechanic thank you for the reply... surprisingly compression was fine. I feel like I should do a leak down test to make sure it's not the rings... I have brand new plugs and coils in there. Only bank 1 is misfiring. All three cylinders on that bank. Fuel pressure good. O2 Sensors on that bank are bad. Both have circuit high and low codes. Was hard for me to believe the O2 sensors would cause such a severe misfire... so I was lead to either the cat being clogged or bad, or compression. Like I said compression is good, leak down I haven't tried yet. Haven't taken out an o2 sensor yet either to see if it runs a little better, nor have I installed a new one.

@@benhajdu4040 maybe try swapping the sensors from left to right bank ? That would diagnose two concerns at once. First, if the misfires move to the other bank it will tell you if the 02’s are causing the misfire. It will also tell you that the O2 circuit codes are caused by the sensors and not their wiring. You could also test exhaust back pressure while the sensors are out.

@@RedeemedMechanic wow, great advice! Thank you very much redeemed! I appreciate it greatly. Will let you know how it goes tmrw. Still in vacation mode today. Cheers!