Blackstone oil analysis shows gas in oil
#1
Evolving Member
Thread Starter
Blackstone oil analysis shows gas in oil
My report shows:
Fuel % 5.8 when it should be <2.0, that's nearly 1/3 of a quart of gas in 5 quarts.
flash-point in degrees F 270 when it should be >385
I used mobile 1 synthetic 5w20 and had 5000 miles on that oil.
I've been doing some research and think it might be my PCV valve that's bad. It has never been replaced. I have 121,000 miles on it. The valve costs $40 new. Can I remove the original one and just clean it with brake or Throttle body cleaner, then put it back in? What do you guys think?
Fuel % 5.8 when it should be <2.0, that's nearly 1/3 of a quart of gas in 5 quarts.
flash-point in degrees F 270 when it should be >385
I used mobile 1 synthetic 5w20 and had 5000 miles on that oil.
I've been doing some research and think it might be my PCV valve that's bad. It has never been replaced. I have 121,000 miles on it. The valve costs $40 new. Can I remove the original one and just clean it with brake or Throttle body cleaner, then put it back in? What do you guys think?
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pcguru2000 (Jan 5, 2018)
#4
Evolving Member
Thread Starter
Once warmed up, it also idle's to a low rpm that causes some shaking, while in drive and stopped at a light. If I pop it in neutral it's fine. Any chance it could be a vacuum hose that is leaking and causing rich mixture?
I'll check the spark plugs, they were replaced a few months ago. I'll also try to take a look through the spark plug hole and see if one cylinder is sparkling clean.
I never look at my tailpipe so I'm not sure if I will be able to tell unless it's really bad.
Thanks a bunch for helping troubleshoot this!
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