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4.7 H.O. oil issue #1422311
04/20/13 02:32 AM
04/20/13 02:32 AM
Joined: Jan 2003
Posts: 20,149
Park Forest, IL
slantzilla Offline OP
Too Many Posts
slantzilla  Offline OP
Too Many Posts

Joined: Jan 2003
Posts: 20,149
Park Forest, IL
I have an '06 Dakota AWD that I bought with 20K miles on it about 18 months ago. Since I bought it the thing has smoked on startup, not every time, and sometimes none. Sometimes it looks like the Marines are getting ready to come through. I have never seen it smoke when going down the road though. It uses about a quart in 800 miles.

Also, at times it tends to run rough at idle, but clears up. Has 59K on it now.

Any ideas?

Thanks!


"Everybody funny, now you funny too."
Re: 4.7 H.O. oil issue [Re: slantzilla] #1422312
04/20/13 12:46 PM
04/20/13 12:46 PM
Joined: Nov 2003
Posts: 1,969
Chandler, AZ
Duner Offline
top fuel
Duner  Offline
top fuel

Joined: Nov 2003
Posts: 1,969
Chandler, AZ
I would take a look at the fuel injectors and maybe some injector cleaner through it. It's my guess that one or two of your injectors are leaking fuel into and washing the cylinder walls down.

Mine would occasionally make a plume of smoke on startup after just driving it - and had an occasional rough idle. I figured out which injector to change on mine when it did the same thing by looking at the plugs.

Although - 1 quart of oil every 800 miles sounds like it could have another issue as well.

Re: 4.7 H.O. oil issue [Re: slantzilla] #1422313
04/20/13 01:23 PM
04/20/13 01:23 PM
Joined: Jan 2003
Posts: 18,389
UPPER MICHIGAN, MARQUETTE COUN...
N
NITROUSN Offline
I Live Here
NITROUSN  Offline
I Live Here
N

Joined: Jan 2003
Posts: 18,389
UPPER MICHIGAN, MARQUETTE COUN...
Sure sounds like valve seals. Back in the 90's the Mitsubishi 3.0 guides would drop in the head.

Re: 4.7 H.O. oil issue [Re: NITROUSN] #1422314
04/22/13 02:06 PM
04/22/13 02:06 PM
Joined: Jan 2003
Posts: 20,149
Park Forest, IL
slantzilla Offline OP
Too Many Posts
slantzilla  Offline OP
Too Many Posts

Joined: Jan 2003
Posts: 20,149
Park Forest, IL
Thanks guys!


"Everybody funny, now you funny too."
Re: 4.7 H.O. oil issue [Re: slantzilla] #1422315
05/02/13 10:45 PM
05/02/13 10:45 PM
Joined: Sep 2004
Posts: 6,906
IL, Aurora
A
ademon Offline
master
ademon  Offline
master
A

Joined: Sep 2004
Posts: 6,906
IL, Aurora
Mine does that once in a blue moon, but I have 187k on it. For the last several years I have been running rotella in it just recently I went with the 10/30 rottela and it seems to like it. I would try the rotella with maybe a quart of mm oil in the crankcase and a heavy dose in the fuel and take it for a blast. Btw mine uses no oil between the 5k oil changes so maybe the rings never seated or one is stuck???







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