Oil on Spark Plugs / CoP / Cyl Misfire
10-02-2012, 07:39 PM
#11
Thread Starter
Join Date: Sep 2012
Location: Ohio
Posts: 9
Hi Sailor and all lurkers on this thread.
The compression test results are in.
Now I have removed the other two spark plugs which were cyl 3 and 4 (pass closer to the firewall). And the spark plug in cyl 4 was completely soaked with oil. By far the worst of all eight.
Here are the results:
#1 - 160
#2 - 175
#3 - 170
#4 - 190
#5 - 175
#6 - 175
#7 - 175
#8 - 180
Now remember in my original post I was getting a misfire code for cyl 6 and then 7.
Hopefully someone that has some knowledge of the these compression numbers can verify what they indicate. Good or bad.
Also, the number sequence for the cylinders is passenger side from front bumper to firewall is 1, 2, 3, 4.
And then driver side from front bumper to firewall 5, 6, 7, 8.
Correct?
The compression test results are in.
Now I have removed the other two spark plugs which were cyl 3 and 4 (pass closer to the firewall). And the spark plug in cyl 4 was completely soaked with oil. By far the worst of all eight.
Here are the results:
#1 - 160
#2 - 175
#3 - 170
#4 - 190
#5 - 175
#6 - 175
#7 - 175
#8 - 180
Now remember in my original post I was getting a misfire code for cyl 6 and then 7.
Hopefully someone that has some knowledge of the these compression numbers can verify what they indicate. Good or bad.
Also, the number sequence for the cylinders is passenger side from front bumper to firewall is 1, 2, 3, 4.
And then driver side from front bumper to firewall 5, 6, 7, 8.
Correct?
10-04-2012, 02:51 PM
#14
Gentleman's Relish
Join Date: Feb 2005
Location: AZ
Posts: 13,090
Hello Everyone,
1st post here and looking for advice. Please know that I have researched these topics on this and other forums.
My car is a 2002 Mustang GT manual with 143,000 miles.
Over the past few months I have noticed occasional blue smoke puff out of my tail pipes when taking off from a stop after the engine is warmed up.
After checking the oil levels, the oil does go down a lot and requires 2 or 3 quarts in-between regular changes.
More recently the car began to loose power and idle rough. SES lights and codes indicate P0316 and P306.
I moved the coil over pack from cly 6 to 5 and had autozone check the codes again. No change. I moved the fuel injector from cyl 6 to 5 and had autozone check the codes again. No change.
after about a week the code and engine misfire stopped. Then after a couple of weeks it returned. This time with codes P0316 and P0307.
I changed the crank position sensor. But no fix. So I began removing coil packs and noticing oil on the boots and in the boots. Especially the CoP from cyl 7 had execisive oil. I pulled out six of the spark plugs and they had some oil on them from the top down to the threads.
My car is a mess and I am having trouble finding solutions.
Sorry if the post is TLDR. Please offer some advice or ideas if you can. Thanks.
1st post here and looking for advice. Please know that I have researched these topics on this and other forums.
My car is a 2002 Mustang GT manual with 143,000 miles.
Over the past few months I have noticed occasional blue smoke puff out of my tail pipes when taking off from a stop after the engine is warmed up.
After checking the oil levels, the oil does go down a lot and requires 2 or 3 quarts in-between regular changes.
More recently the car began to loose power and idle rough. SES lights and codes indicate P0316 and P306.
I moved the coil over pack from cly 6 to 5 and had autozone check the codes again. No change. I moved the fuel injector from cyl 6 to 5 and had autozone check the codes again. No change.
after about a week the code and engine misfire stopped. Then after a couple of weeks it returned. This time with codes P0316 and P0307.
I changed the crank position sensor. But no fix. So I began removing coil packs and noticing oil on the boots and in the boots. Especially the CoP from cyl 7 had execisive oil. I pulled out six of the spark plugs and they had some oil on them from the top down to the threads.
My car is a mess and I am having trouble finding solutions.
Sorry if the post is TLDR. Please offer some advice or ideas if you can. Thanks.
This same saturated plug or plugs are also teh culprit for throwing Code 0307 and 0306.
You have two gaskets your are talking about. One could be related to the misfire, one is not.
A Valve Cover Gasket has nothing to do with your existing problem. However, you do need to take your Valve Cover (and the associated gasket) off to view/replace the Valve Stem Seals.
Valve Stem Seals are under the Valve cover and seal out crankcase gases and oils from your combustion chamber that might otherwise enter through the Valve Stem sleeve. When these seals fail you get the type of issues you are having.
My suggestion is to replace all of the valve stem seals on that side of the engine (cylinders 5,6,7, and 8). Just looking at them and feeling them will not tell you if they are leaking. If they have shrunken, they may still look and feel ok but they will be too small of a diameter (or lenght) to keep the oil out. It only takes a couple thousands of an inch shrinkage to start getting problems.
It's not major engine work as long as you don't let a valve drop into the motor.
Thread
Thread Starter
Forum
Replies
Last Post
Golfsito
GT S197 General Discussion
9
10-06-2015 11:02 AM
Omgitsa88Stang
5.0L General Discussion
5
10-05-2015 07:33 AM