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Cold Starting Normal Situation?
http://www.lostjeeps.com/forum/phpBB3/viewtopic.php?f=5&t=13368		 Page 1 of 1
Author:  Marlon_JBT [ Thu Oct 12, 2006 1:54 pm ]
Post subject:  Cold Starting Normal Situation?
Question for you guys, I'm going to describe exactly what happened today as I started up my Jeep.

Odometer: 5054
Fuel In Tank: about 11 or 12 gallons of estimated LSD B15.

About 2 or 3 weeks ago, I noticed that my oil on my dipstick was at the "Add" mark, so I peeked in the owners manual, says add one quart. OK, done. I let it sit overnight, check it... full. Great, I say. Darn diesels. ;)

It has been sitting in the same parking space since Tuesday evening. I let the glow plugs warm up the engine. It took about one second, temperature is about 39º.... so says EVIC.

I checked the oil..... to my surprise, now it says it's overfilled....... by a heck of a lot?!?!?!

Turned the key, took about 3 seconds to start, while starting a white cloud came out of my exhaust, then when it turned over, a bunch of blue smoke poured out.

Engine sounds somewhat normal, bit rough running as reported in the other threads, and expected as every engine I've ever driven, whether gas or diesel sounds and runs strange until warmed up in cold weather. No CEL or Oil Pressure Lamp.

Other than that, it drove exactly like a Liberty should in 39º weather... suspension creaky and stiff, slow shifting, hard power steering, cold seat belts, etc etc etc. Fun. :) :)

So my question is... is my engine overfilled or not and is the blue cloud coming out of my exhaust related to it?
Author:  KJbob [ Thu Oct 12, 2006 2:28 pm ]
Post subject: 
I'm not sure if you are checking your oil when your engine is cold (like sitting overnight), but that's when you should do it. Be consistent; always check it when your engine is cold.

Mine sat out overnight last night (below freezing). When I started it this morning I was reminded how bad these things sound initially in cold weather. No smoke though (or so little I didn't notice).

I usually have to add oil about every 3,000 miles, but I don't add a quart at a time. Maybe a half quart, max, and then I'll check it again the next morning adding if necessary (Usually I don't have to add more oil).

Hope this helps.
Author:  DZL_LOU [ Thu Oct 12, 2006 2:30 pm ]
Post subject:  Re: Cold Starting Normal Situation?
Marlon_JBT wrote:
Question for you guys, I'm going to describe exactly what happened today as I started up my Jeep.

Odometer: 5054
Fuel In Tank: about 11 or 12 gallons of estimated LSD B15.

About 2 or 3 weeks ago, I noticed that my oil on my dipstick was at the "Add" mark, so I peeked in the owners manual, says add one quart. OK, done. I let it sit overnight, check it... full. Great, I say. Darn diesels. ;)

It has been sitting in the same parking space since Tuesday evening. I let the glow plugs warm up the engine. It took about one second, temperature is about 39º.... so says EVIC.

I checked the oil..... to my surprise, now it says it's overfilled....... by a heck of a lot?!?!?!

Turned the key, took about 3 seconds to start, while starting a white cloud came out of my exhaust, then when it turned over, a bunch of blue smoke poured out.

Engine sounds somewhat normal, bit rough running as reported in the other threads, and expected as every engine I've ever driven, whether gas or diesel sounds and runs strange until warmed up in cold weather. No CEL or Oil Pressure Lamp.

Other than that, it drove exactly like a Liberty should in 39º weather... suspension creaky and stiff, slow shifting, hard power steering, cold seat belts, etc etc etc. Fun. :) :)

So my question is... is my engine overfilled or not and is the blue cloud coming out of my exhaust related to it?


White smoke occurs mainly during cold starts. when the fuel tends to condense into liquid and does not
burn due to cold engine parts. White smoke could also be misinterpreted as steam as vapor droplets.

The blue smoke is caused by crankcase oil entering the combustion chamber and being emitted after
partial combustion through the exhaust. Could be due to oil overfill, or oil in the CAC hose from the CCV or oil in the CAC hose from the turbo.

If both of these smoke colors appear for only a few seconds, I would not get to excited but I would monitor the oil and the CAC hoses for the blue color smoke.
Author:  cocojo [ Thu Oct 12, 2006 3:59 pm ]
Post subject: 
I wouldn't drive it much overfilled. Under full is much better than over filled. Overfilling can cause seals to leak. Have the oil changed, it is worth the money of an oil change rather than blown seal replacement. Or you could try taking some out, but that can be a pain.
Author:  RFCRD [ Thu Oct 12, 2006 5:15 pm ]
Post subject:  Re: Cold Starting Normal Situation?
Marlon_JBT wrote:
So my question is... is my engine overfilled or not and is the blue cloud coming out of my exhaust related to it?

I doubt it's overfilled if you let it go to the add mark before adding a quart. Sometimes you need to dip the stick several times to get an accurate reading. Personally believe the o-ring seal around the top of the dipstick pulls oil up the dipstick tube and thus affects the readings. Sometimes I crack open the sealed oil fill plug as it seems to lessen the chance of a strange readings. Just another CRD quirk.
Author:  TDI4BY [ Fri Oct 13, 2006 4:09 am ]
Post subject: 
The B-15 might cause that, when I run bio(usually more like B-50 or B-99) I can blow a huge cloud upon initial start up.
Author:  RFCRD [ Fri Oct 13, 2006 9:49 am ]
Post subject: 
TDI4BY wrote:
The B-15 might cause that, when I run bio(usually more like B-50 or B-99) I can blow a huge cloud upon initial start up.

Biodiesel might do this but what he is seeing (smoky start-up) is to be expected in the cold weather. It's been cold enough around the Great Lakes the past few morning to do this. If you have any motor oil coming through the CAC it will blue-smoke until the catalyst is up to temp.
Author:  Marlon_JBT [ Fri Oct 13, 2006 1:20 pm ]
Post subject: 
I figured the white smoke was normal...

It's the blue smoke I'm concerned about. I have never seen it before.

I'll check my oil later today and see how it is around 5:30PMish.
Author:  Marlon_JBT [ Fri Oct 13, 2006 6:13 pm ]
Post subject: 
No white smoke, no blue smoke today.

45º

Oil level still flaky, if I turned the dipstick around, I got a lower reading? Confused!
Author:  RFCRD [ Fri Oct 13, 2006 7:52 pm ]
Post subject: 
Marlon_JBT wrote:
No white smoke, no blue smoke today.

45º

Oil level still flaky, if I turned the dipstick around, I got a lower reading? Confused!

Flipping the dipstick will change the reading slightly.

Just wondering two things:
1. Did you have this Jeep last winter?
2. Have you looking inside the CAC hoses for oil contamination?

Usually with cold diesel smoke, white is raw fuel and blue is motor oil. The source of the smoke is likely motor oil from the CAC. Once the catalyst is warm it will clear (along with any odor).
Author:  Marlon_JBT [ Sat Oct 21, 2006 7:45 pm ]
Post subject: 
Took off the CAC hose. No more oil in there than it was at 2000 miles. Just a thin layer around the whole hose. You can see the red rubber in some spots.

I took the oil cap off before checking, and checked SEVERAL times. Seems to be at the full mark now. Weird.

This vehicle is definitely a Jeep. Nothing at all remains constant. :lol:

I'm now at 5559 miles.

Did I have this Jeep last winter?

Check the rate at which miles are piling up on it. I don't think so. 8) :lol: Hehe.

No I did not. I had my old '04 last winter.
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