Guests - If You want access to member only forums on HSO. You will gain access only when you sign-in or Sign-Up on HotSpotOutdoors.

It's easy - LOOK UPPER right menu.

fishingstar

Carbon and a direct Injection

18 posts in this topic

I have a 14 Impala with 3.6 in it that has 66000on it. I started getting a p0301 code.

Took it in to the dealer they found low compression. They told me that they are having problems

with the dI engines building up carbon on the valves. So they are going to do a valve job on the heads.

They said it has to do with oil quality I reminded  them that they did all oil changes up to the warranty at 48000

at that point I started to do them my self and used mobile 1. So I'm not buying it.

Do anybody heard of this and how do I stop it from happening again.

 

At this rate this car will be off warranty in less then a year.  

Share this post


Link to post
Share on other sites

I don't know about the car, but I have a 15 Silverado 6.2 and I put on an oil catch can, its made by Elite engineering. I get roughly 2-4 oz every 1000 miles in the can that otherwise would have been on the valves. Check it out and see if they make one for the cars, I know they do for the camaro and corvette.

Share this post


Link to post
Share on other sites

maybe I'm missing something but could the fuel one uses be a part of this problem?

Share this post


Link to post
Share on other sites

From what I under stand the injector is in the combustion chamber the gas does not wash over the valve when the gas is injected. So all of the byproducts stick to the hot valve. 

indirect injection will inject gas so it will wash the deposits off the intake valves.

So long story short gas should have no impact on it.

This is all new to me and I'm trying to understand it and prevent it from happening again.

So if i'm wrong on any thing set me straight.

 

Share this post


Link to post
Share on other sites

You are correct in that a direct injection motor the gas does not wash over the valves. On my Silverado the pcv hose comes from the crankcase and runs back to the intake which runs the dirty oil vapors onto the intake valves, now with my oil catch can it runs from crankcase to catch can, which separates oil from the air before running back into the intake. The new ford ecoboost motor for 2017 has both port and direct injection to help alleviate crusted up valves.

Share this post


Link to post
Share on other sites

Most if not all the manufacturers are running into this issue with direct injection. Upper intake cleanings an a regular basis may be another option to consider.

 

The good news is the timing chain will stretch and cause all kinds of problems. You will most likely be out of warranty when this happens. 

Share this post


Link to post
Share on other sites

Chevy started in 2014 with DI. Before then your fine, port injection.

Share this post


Link to post
Share on other sites

Got my car back yesterday. They cleaned up the head found a bad injector then found a small vacuum leak. After 80 some miles got the same 301 code. They are telling me that the extra fuel from the bad injector was causing the extra carbon buildup. That all makes sense but obviously they have not found all the problems. 

Share this post


Link to post
Share on other sites
37 minutes ago, fishingstar said:

Got my car back yesterday. They cleaned up the head found a bad injector then found a small vacuum leak. After 80 some miles got the same 301 code. They are telling me that the extra fuel from the bad injector was causing the extra carbon buildup. That all makes sense but obviously they have not found all the problems. 

 

Did they throw on a new wire and plug on C1?

Share this post


Link to post
Share on other sites
7 hours ago, leech~~ said:

 

Did they throw on a new wire and plug on C1?

coil over plug. no wire.

 

I just did an injector on a 3.6. Not a real fun job. The injector stuck open and filled the cylinder with fuel. After replacing the injector the engine ran but soon developed some undesirable noises. It is getting a new motor on thursday...

Share this post


Link to post
Share on other sites
58 minutes ago, Jeremy airjer W said:

coil over plug. no wire.

 

I just did an injector on a 3.6. Not a real fun job. The injector stuck open and filled the cylinder with fuel. After replacing the injector the engine ran but soon developed some undesirable noises. It is getting a new motor on thursday...

 

Doesn't like to run with a crank full of gas huh! Lol

 

Share this post


Link to post
Share on other sites

from what they told me the oil had some gas in it. 

before they took the car I looked at the dipstick and it didn't look high.

Share this post


Link to post
Share on other sites
On 12/13/2016 at 5:42 PM, leech~~ said:

 

Doesn't like to run with a crank full of gas huh! Lol

 

The oil was changed with the injector replacement, It definitely smelled like gas....

 

leech~~ likes this

Share this post


Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!


Register a new account

Sign in

Already have an account? Sign in here.


Sign In Now



  • Posts

    • I have been meaning to try to stick a yote too whenever I was out I hoped one would show up instead of a turkey.
    • should have set up in the grass! Uncle went back for evening set up at a pinch point hen and tom came through to go back to roost but no shot!
    • Beside the fun of fooling a turkey and sticking it witj my bow,this is why I love turkey hunting. Slow smoked with apple on the pellet smoker. 
    • Does anyone have a water driven backup sump pump? They look like the cats meow if you live in town. Or does code even allow them? If they are not allowed what is the best battery backup ones?
    • Got out Saturday morning. Perfect weather. Jakes and hens. Had a new group of 6 hens come in with no tom or jakes.   Did have a yote come out of nowhere right into my dekes. 12 yards. Just as I was drawing on it , it must have scented me and booked. A second yote crossed about 50 yards out. Sticking a yote is on my bucket list.   All in all a great morning.    
    • Good season Wild, onto next year. Should be some changes but I don't expect us to do anything crazy. Need to sign Granlund and Nino and that will use up a lot of our cap space. Can't afford Hanzel and possibly Haula and Vegas will be taking a player off our hands. I'm more interested to see who can sustain or step up their scoring next year or if anyone regresses. Granlund, Coyle, Nino, Zucker, Dumba, Spurgeon and Brodin all had career years, those are good problems to have. They showed us a lot but I think they still have room to grow and that is what we need. We have a nice cast of vets but they are likely too old to lead us to a cup, they would be in more supporting rolls. Hopefully our now seasoned young core and continue to build on their impressive seasons. Always disappointing to lose, even worse when you can't score against your old coach but I like the our team and hopefully we can keep getting better.
    • I'm not the most techy 40yr old out there, so I will try to explain what I'm looking to do and hopefully someone can point me in the direction I need to go. I have a cabin in the Chippawa National Forrest, no phone at the cabin and our cell phones dont work at the cabin either. My teenage son wants to take the wheeler and go riding alone. I worry he's going to get lost or if the wheeler breaks down he can't call my cell for help. When we drive my truck around; the gps in it works all the time.  I know I can put a GPS app on my sons phone so he can track his route in reverse to get back to the cabin. But what if he breaks down?  Does anyone know if there is a gps app that I could "pair" up me and my son's phone so I can see where he is at? kill 2 birds with one stone per say, he can use it to navigate himself on the wheeler and I can see where he's at incase I need to rescue him.  Thanks for the help.
    • Hit the Red River over the weekend for the 2nd time this spring. First outing wasn't great with a handful of smaller cats all under 10lbs. This weekend was a different story as we ended up with 15 cats Friday night. 5 over 10lbs, 2 of which were high teens fish. All caught on cut river bait.  Cats were on the shallow side of the river. Water was high and flowing pretty good. All fish were caught and released. Great night of fishin w no bugs to bother us and very nice weather! Gonna give it another whirl soon in a boat this time. Have a look!!
    • I've never tried my booya poppin pad crashers Yet but are they really bad or just not as good? Just wondering.
  • Our Sponsors