Question about 2000 Nissan Xterra

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Oil caked sparkplug

Ive pulled a sparkplug and it has oil caked on it i want to know if it could b a blown ring

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Yes or it could be bad valve seals

Posted on May 09, 2009

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Posted on Jan 02, 2017

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2 Answers

Water in the oil


Radiator coolant in the engine oil is normally an indication of a failed cylinder head gasket or a crack in the cylinder head or both.

Running the engine in an overheated condition will cause head gasket failure and often a crack in the cylinder head.

The problem you have is coolant is escaping into the engine's lubrication passages via the failed head gasket or head crack and contaminating the engine oil. If not fixed you will cause further damage to the engine as oil contaminated with radiator coolant cannot adequately lubricate the engine.

Running a leak down test on each cylinder will confirm the leak. In this case you are going to need to have the cylinder head removed and thoroughly checked for cracks and any warpage as well as a new cylinder head gasket fitted. The condition the engine block surface will also need to be checked.

Jun 14, 2016 | Cars & Trucks

1 Answer

2003 toyota mr2 exhaust valve


It could also be broken piston rings...but if your not burning or using oil, highly likely. The way to check wether it is piston rings or an exhaust valve is to put some oil(about 2 tablespons) into the effected cyclinder space by removing sparkplug and adding. **you must remove all sparkplug leads at this time to prevent it from "firing". If you then attatch a compression guage to the cyclinder, turn the engine over with the starter motor,noting the reading. If it is "broken rings" the compression will improve dramatically with engine turnover. If it stays the same the culprit is a burnt exhaust valve(s). This should ONLY be done by a competent person. Hope this helps

Jan 16, 2013 | 2003 Toyota MR2 Spyder

1 Answer

Does not turn over. makes a clicking noise when you turn the key


Fuel spider has blown an o-ring and fuel has flooded a cyl. Pull all the sparkplugs and rotate the engine by hand to empty the cyl.

Aug 25, 2011 | 1997 GMC Sierra

2 Answers

I have fire, gas, and no blown fuses. ive replaced distributor, cap, button, and coil and also replaced fuel pump. Im lost dont know what to do


Did you make sure you put the sparkplug wires back in the right holes?
If so it could be a compression problem. If you have the tool you can check it yourself by removeing the sparkplug one at a time and and put the gage in the empty sparkplug hole. Have some one turn over the motor and see if your compression is right. Do this to all the cylenders to be sure. If you dont have the tool, take it to a mechanic and have it checked. He can tell what it is and what it is suppose to be. Not knowing what engine you have, I can not tell you what compression to look for. If your compression is low, the rings are gone.

Feb 26, 2011 | Ford Probe Cars & Trucks

1 Answer

I found oil on 2 spark plugs telling me the head gasket is blown. Ive never replaced one before what can you tell me?


Oil on the plug does not indicate a head gasket.
It could be a bad ring, valve guide or valve seal.
A leak down test will comfirm a head gasket leak
A compresion test will confirm a ring problem.
Oil consumption and smoke indicate ring and valve problems.
If it smokes on stat up, most likely valve guide or seal.
If if smokes when you drive and let off the gas quickly from speed, then most likely a ring or cylinder wall problem.

Good Luck

Oct 05, 2010 | 2006 Saturn ION

2 Answers

Add 3 quarts of oil too much to the car the car started to smoke oil,check engine light came i got a oil change about 10 miles after that the check engine light went off the oil light has came on twice...


it may have blown the oil rings out on the pistons, thats what ive always heard about putting in too much oil is that it can mess up the oil rings and compression rings resulting in the engine needing rebuilt

Jan 15, 2010 | 1991 Honda CRX

1 Answer

Driving home car starts to loss power and smoke out tailpipe. find two sparkplugs fouledwith wet oil any clue


Sounds like your oil rings are shot on those two pistons, and the fact that you are losing power probably means that the compression rings are shot as well. I'm guessing that there are a lot of miles on the engine? I would first have a compression test done on all cylinders. Possible blown head gasket or need of a valve job. Let me know!

Nov 28, 2009 | 1997 Plymouth Breeze

1 Answer

Help


white smoke is you car burning water but you know that it sounds like you have ahair line crack in you engine block it doesnt show till you sit still the presure on your engine is pressing your block or head together keeping it from leaking but at idel it starts to leek what is the color of you oil if it is brown or milky that most likely the problem. they make a tester the you put on you radiator to dee if it bubbles if it does you have a blown head gasket or a cracked block or head. might want to look for an engine replacement. you can try liquid glass but it is only temporary and will ruin your engine in the long run. i dont recomend it but it can work for @ 200 miles if your luckey

Jul 20, 2009 | 1992 Daihatsu Charade

1 Answer

50 percent compression on piston


Squart some oil into that cylinder through the sparkplug hole and test again. If the compression is now a lot better your rings are bad or broken, If it does not improve then you have a bad or burned valve. 

May 06, 2009 | 1989 Ford Escort

1 Answer

Nissan lec ps 98model


Typically, White smoke from the Exhaust Means that the Motor is Burning Oil. Keep an Eye on the Oil level and let me Know.

Jan 15, 2009 | 1997 Nissan Sentra

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