Honda Civic / Del Sol (1992 - 2000) EG/EH/EJ/EK/EM1 Discussion

gassy oil

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Old Nov 2, 2008 | 05:23 PM
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Default gassy oil

ok i went to change my oil and it smells like gas can any one help please
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Old Nov 2, 2008 | 05:28 PM
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what engine? how many miles are on it?
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Old Nov 2, 2008 | 05:30 PM
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usually thats a sign of the rings, or leaky injectors possibly. But what happens is: one way or another gas or comusted gas in the form of excessive blow by makes its way to the oil cause the rings are wore too much
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Old Nov 2, 2008 | 05:32 PM
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Default Re: (z6hatchboy)

wwell it does have a blown head gasket and its a d16z6 with 100000 milesw on it
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Old Nov 2, 2008 | 05:36 PM
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if it has a bad hg why did you even ask us this? get it replaced
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Old Nov 2, 2008 | 05:38 PM
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Default Re: (SOHC_4dr)

yea but i dont understand why a head gasket would do this
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Old Nov 2, 2008 | 05:41 PM
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the head gasket separates the oil passages, coolant passages, and combustion chambers. your oil passage is leaking into your combustion chamber and the gas and oil are mixing together. have you noticed blue smoke out your tail pipe?
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Old Nov 2, 2008 | 05:43 PM
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Default Re: (SOHC_4dr)

cant really see my pipes i have have none lol it stops at my exhuast manifold (headers)
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Old Nov 2, 2008 | 05:44 PM
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ok lol well get the hg replaced and your done
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Old Nov 2, 2008 | 05:47 PM
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Default Re: (SOHC_4dr)

how rare is it to stretch a head bolt by 1/4 inch??
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Old Nov 2, 2008 | 05:49 PM
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never reuse a head bolt. get a new one everytime. thats all you really need to know
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Old Nov 2, 2008 | 05:53 PM
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Default Re: (SOHC_4dr)

i need all ten how much do the set of ten run about?
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Old Nov 2, 2008 | 05:54 PM
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not sure. give me min ill let ya know
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Old Nov 2, 2008 | 06:00 PM
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about 10 a bolt. go to myhondapartsstore for them. it'll be on a discount for 7 instead of 10
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Old Nov 2, 2008 | 06:04 PM
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Default Re: (SOHC_4dr)

wait a dollar a bolt or 10 dollars a bolt?
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Old Nov 2, 2008 | 06:07 PM
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Default Re: (lilshady6796)

$10 per bolt. so for all ten you'll pay $100
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Old Nov 2, 2008 | 06:09 PM
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Default Re: (SOHC_4dr)

damn ill just buy arp studs lol it will be better btw how would i find out if my bolts really are stretched
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Old Nov 2, 2008 | 06:13 PM
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they are stretched because they are used lol there is no if about it. but if you look for a change in the thread pattern of discoloration due to the stretch
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Old Nov 2, 2008 | 06:30 PM
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Default Re: (SOHC_4dr)

o ok i see ill just get arp studs lol
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Old Nov 2, 2008 | 06:32 PM
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got it. good luck
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Old Nov 2, 2008 | 06:49 PM
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the stock head bolts arent torque to yield bolts and shouldnt be stretched if done right, and if stretched 1/4 inch that could've cause some problem, might want to it re-surfaced
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Old Nov 2, 2008 | 06:53 PM
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Not sure if most of you noticed this or not, but the oil smelling slightly of gas after a few thousand miles would be considered normal. No engine has perfect sealing capabilities, so obviously you're going to have slight blow-by passed the piston rings, meaning the oil will eventually have a fuel smell to it. This is also the reason we have PCV valves. Also, depending on how many miles are on the motor, how well the motor has been taken care of, etc. could also determine things. Some engines usually just have this problem, such as a a rotary engine. Didn't matter if they were freshly rebuilt or had 100k miles on them, you'd always get fuel dilution in the oil. lol
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Old Nov 2, 2008 | 06:58 PM
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Default Re: (The_Honda_Guy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by The_Honda_Guy &raquo;</TD></TR><TR><TD CLASS="quote">Not sure if most of you noticed this or not, but the oil smelling slightly of gas after a few thousand miles would be considered normal. No engine has perfect sealing capabilities, so obviously you're going to have slight blow-by passed the piston rings, meaning the oil will eventually have a fuel smell to it. This is also the reason we have PCV valves. Also, depending on how many miles are on the motor, how well the motor has been taken care of, etc. could also determine things. Some engines usually just have this problem, such as a a rotary engine. Didn't matter if they were freshly rebuilt or had 100k miles on them, you'd always get fuel dilution in the oil. lol</TD></TR></TABLE>

Yes all cars do have some blow by, but it is so little that it makes the sealing of the bottom end so good that, that is the reason we have pcv's not so they can vent the blow by, there just not that much blow by. Even with the small amount of blow by present from the factory its not enough to really notice a gas smell from oil. When you get that smell noticably you have a problem.
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Old Nov 2, 2008 | 07:08 PM
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If that was the case then why would every vehicle that gets an oil change at 3,000 miles have a slight hint of fuel smell to it? Obviously with the slight bit of blow-by over 3,000 miles you're going to get the slight fuel smell. If you'd like to figure out how many power cycles are in those 3,000 miles be my guest, but during each of those you're getting a slight bit of blow-by. I believe what you're trying to say is if the oil smells strongly of gas after only 500 miles or so, that would indicate more of a problem than if it only smelled slightly of it after a 3,000 mile oil change.
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