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

    • Tomorrow we will be back at it
    • I am giving it a last hurrah tomorrow. Sorry I haven't been able to check in here much. I have hardly been able to get out this year between work, a baby at home, and a recent trip out of the country for a relative's wedding.    Last time I was out I had a real nice Tom within 20 yards after a very long standoff. I think I screwed it up by rushing myself a bit. He stood around 50 yards out literally strutting back and forth like someone had drawn a line in the mud that he wouldnt cross. He must not have wanted to fight with the strutter decoy we had out. He did that for 45 minutes to an hour and finally came our way after a hen led him towards us.    They came past us but were outside the decoys and angling slightly away from us. Then the tom turned and started angling straight at the strutter decoy. That meant he was basically quartering to me and when he was 15-17 yards or so out I drew because in the back of my mind i was thinking if he kept moving that way and past the decoy he would quickly be in a spot I would have had no shot.   In hindsight I think he had realized (once he got close enough) that he would have been able to whoop up on the decoy and he was coming in to do just that. I probably should have waited to see, but I didn't and right as I hit the backwall of my draw his head popped up on alert and he turned around and walked straight away knowing something wasn't quite right. I could have easily shot at him at 20 yards but he was facing away and I just didn't feel comfortable. I am confident I would have hit my mark but I didn't like shooting at something walking straight away when I am not experienced with bow hunting turkeys.   I know some people will say that I should have shot, but I have been bow hunting for awhile and never wounded anything because of a poor shot or poor shot selection, so I didn't want that to be a first. Hopefully I get a shot at redemption tomorrow!
    • Way to go team!! I sure took the avg score down with my jake
    • nice story, fishing has a way of easing the pains we have. even when we hurt like crazy when done for the day we are looking forward to the next outing.
    • way to go, guys yep, the toms not about to give up even though its close to closing time have seen several strutters the past couple weeks and heard gobbles yesterday while fishing
    • great job. makes it 5 for 5 for team 5 congrats on a nice tom, 57 and that willl give our team score a boost
    • One More Cast      Photo by:  Roger Abraham   If any of you out there are regular readers of my tales, you have followed my recent struggles with back and knees.  I can’t put a name to this drive I have to be on the stream as of late.  It borders on obsession. I guess in my mind if I am healthy enough to fish the world is right with me and I am not getting old and feeble.      Today I was a witness to that I am not the only one.  Lots of anglers and hunters live to go out into the outdoors. .  It is what drives them.  It makes them feel alive.  It is their passion.  I told my fishing buddy Abe today my thoughts.  I told him how I was feeling a little old.  I guess my 60th birthday coming up next month makes me feel mortal.  Abe laughed and said I was a young buck compared to him.  Abe turns 76 this year.     Abe told me tales about catching big trout in tiny streams in Wisconsin and out west.  The twinkle in his eye when he reminisced I had seen before in many trout anglers.      We fished a stretch for 2 hours.  I sat down and rested often.  Abe kept on fishing. He got hung up in a box elder branch and lost a lure.  Abe told me box elders trees were his nemesis when he fished.   He asked me which tree was my kryptonite.  I told him, "ones with branches."  We both had a chuckle and continued fishing.   I thought to myself this guy is really driven.  I hope I am like him at 76.     We got to the vehicle and Abe wanted to continue fishing.  Abe’s waders sprang a leak earlier and he fell in the water a couple times.  He was quite wet.  He wanted to change in to dry clothes before we continue.  Abe peeled off his wet shirt and there were two things stuck to his chest.  He could tell by my questioning look he needed to tell me what was up.     Abe told me he had been having heart problems lately and he was supposed to be wearing a heart monitor.  He left it in the car because he was afraid of getting the electronics wet.  Here I have been whining about being old and the guy I was fishing with left his heart monitor in his vehicle.      Abe reassured me that he was in no danger and he could continue fishing.  I started brainstorming on a place to fish where it was not so hard walking.  Now that I knew he was not as healthy as he looked I wanted an easy place to fish.  I knew the place and it was upstream 5 miles.     We arrived at the well manicured field.  It looked like a golf green.  I picked the area because the farmer kept sheep and goats on the land and the weeds and brush were gone because of the goats.  We walked and fished.     Abe told tales of the old days and of fish lost and landed.  I walked a little forward to fish and looked back to check up on Abe.  What I saw when I looked back scared me and I immediately asked Abe if he was ok.  Abe was laying flat on the ground face down.  I thought the worst and he could tell by my face.  He told me to calm down.  His back was acting up and he needed to straight it out and that was the best way to do it.   We fished a little bit more and he took a photo of me.  He liked the lighting. He told me it captured the essence of trout fishing.  He did not have a camera.  I let him use mine.  He was not camera savvy and needed an impromptu lesson on how to use it.   We drove to his car and we talked about our love of the outdoors. We shook hands and headed our separate ways and promised to fish again soon.  As I drove home I smiled and thought about how I am going to be when I am 76.  I hope I am like Abe and my eyes still twinkle when I talk of chasing trout and I am still driven to make one more cast.
    • The past week has had me having multiple close calls and missing a brute at 45 yards.  Tonight I talked my dad to give it another try and there were birds in the field when we got there.  Birds ended up leaving as we tried to sneak in.  A short 20 minutes later they were back and we watched and worked the big group of toms and hens for more than 2 hours before we got one to commit.  Dad shot him with his 20 gauge at 48 yards,(this thing shoots an awesome pattern).  The 3 year old was down and only flopped a few times.   Nice 1+ inch spurs, 10" beard and heavy.  A good evening for sure!
    • Sorry to disappoint guys, but this tom was not my first bird of the season. Apparently that's part of the rules. The score won't count towards the team. I don't have any measurements for the jake I shot so we will have a zero from me.    At least my freezer is full. 
  • Our Sponsors