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jgreen
Dodge Dakota
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10/10/2007
19:15:41
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 Subject: help with blow-by please
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Message:
Im getting blow-by and oil is coming out of my breather, PCV, oil cap and there is oil in my hat. I recently replaced the intake manifold gasket and had a compression test done and all my cylenders are within tolerance. The PVC seems to be fine and I just changed the breather. That may fix it, Ill know tomarrow. What else can cause blow-by?
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OBIO3
Dodge Dakota
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10/10/2007
20:35:35
| RE: help with blow-by please
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Remove the PCV And shake it. No rattle no good. Also check for pinched or pluged vacuum hoses
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.boB
Dodge Dakota
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10/10/2007
23:02:56
| RE: help with blow-by please
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Message:
Too much blow by is caused by worn rings. Products of combustion end up in the crank case.
Remove the oil filler cap. run the engine at a high idle. Place your hand lightly over the fill port. How much pressure do you feel? Compare to an engine that isn't spooging oil.
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jgreen
Dodge Dakota
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10/11/2007
16:40:46
| RE: help with blow-by please
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the truck has just over 105000 miles and the engine was rebuilt at 50000. I find it hard to believe that the rings are that worn. PCV is good. New breather is on. No hoses seem to be pinched or pluged. If the rings are worn, this means total rebuild, correct? How long will it last in the current state?
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jgreen
Dodge Dakota
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10/11/2007
16:42:36
| RE: help with blow-by please
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One more thing, wouldnt a compression test reveal worn rings?
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.boB
Dodge Dakota
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10/11/2007
16:50:34
| RE: help with blow-by please
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Message:
No, a compression test would not always reveal what you need to know. Did you do the test both wet and dry?
Crank case pressure only comes from one place - the combustion chamber.
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hey
Dodge Dakota
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10/11/2007
18:55:59
| RE: help with blow-by please
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Message:
check the small things first
seriously
put a new PCV valve and replace the hose
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OBIO3
Dodge Dakota
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10/12/2007
09:05:27
| RE: help with blow-by please
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Question. Did this srart happening after PCV valve was replaced? was a after market PCV valve instaled. If so, get a good ne from the dealer. Just might be all it is
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wylman
Dodge Dakota
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11/08/2007
17:50:41
| RE: help with blow-by please
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jgreen- Who rebuilt your engine? Did anyone make sure the ring gaps were not lined up? I broke a Harley motor down once that smoked and raised all types of cane, Oil was coming out of the breather and exhaust...... When I tore the engine down, it immediately came to light that the ring gaps were not staggered. A light hone and staggering of the rings solved the problem.
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Well...
Dodge Dakota
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11/08/2007
23:49:34
| RE: help with blow-by please
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Message:
what engine is it?
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jgreen
Dodge Dakota
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11/19/2007
18:35:52
|  RE: help with blow-by please
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Message:
The engine is a 318 and was built by someone at Camp Lejune North Carolina. I have no way on knowing exactly what was done. If the rings were not staggered wouldnt that cause an imediate problem? Ive only had the truck for 6 months and it didnt do it until two months ago. After a compression test that was within tolerance, a replaced intake manifold gasket and breather and checking of the PCV valve I'm lost.
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wylman
Dodge Dakota
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11/19/2007
19:37:29
| RE: help with blow-by please
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jgreen- Are you still near camp Lejeune? I live right down the road from there in Hubert. I am leaving tonight for a week but, if you want, I will be more than glad to lookat it for you when I get back. Let me know what you think.
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colomtnmn
Dodge Dakota
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5/19/2008
05:31:56
| RE: help with blow-by please
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Message:
If you guys figure it out I sure would like to know becouse i HAVE THE SAME PROBLEM in my 97 slt with the magnum 5.2, sts turbo, and a hyperteck chip kit I was blaming it on the turbo? but now you all got me wondering if it actualy is?
the colomtnmn
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onearmsteve
Dodge Dakota
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5/21/2008
20:16:11
| RE: help with blow-by please
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Message:
a cylinder leakage test will tell you if its rings are worn or valves are not siting
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daddio
Dodge Dakota
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5/21/2008
23:49:24
|  RE: help with blow-by please
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Message:
Or I can cum blow by you all day long.
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dakota49
Dodge Dakota
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5/25/2008
18:22:18
| RE: help with blow-by please
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it could be broken rings,(compression) they will cause the same problem, but they would also lower the compression a bunch as well.
Dakota49
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intensedak39
*GenIII*
6/02/2008
12:47:37
| RE: help with blow-by please
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Message:
a normal compression check would not always reveal worn rings. .boB got it right by suggesting the wet compression test. a cylinder leak-down test would also be a good source of information as steve suggested.
jgreen, what steps did you take to do your compression check?
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stevie rourke
Dodge Dakota
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6/02/2008
23:21:02
| RE: help with blow-by please
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Message:
want to know about Blow-Bi ?
then Shatto is the guy you want to get in touch with
when it comes to blowing he's the best
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RetardedSon
Dodge Dakota
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6/03/2008
00:18:08
|  RE: help with blow-by please
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Message:
My daddy TexasTodd knows about blow by.
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