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Post sandy gas quality

After a long search and an even longer wait, I finally found some gas for my z at*a local gas station. *The brand of gas I cannot actually recall, but

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Old 11-09-2012, 04:04 PM   #1 (permalink)
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Exclamation Post sandy gas quality

After a long search and an even longer wait, I finally found some gas for my z at*a local gas station. *The brand of gas I cannot actually recall, but was definitely not a big chain like sonoco, which I usually use. I told them to fill me up with 91. Shortly after the trip home, my SEL turned on. I immediately checked my gas cap to make sure everything was tightened properly, drove around for a little bit, the light was still on. *The next day I turned on my car, warmed her up for a good 5 min and noticed an unusually high idle rpm. With the car warmed up, the tach read 1000-1100. * This worried me, so I took the car to autozone to check the SEL code. Came back to the dreaded p0300 aka multiple random misfire. My father mentioned earlier that no named brand gasoline companies sometimes dilute their gas with water. This suspicion was confirmed by the gm at autozone. So I purchased some injector cleaner to help remedy the problem.*

This message goes out both as a WARNING and a PLEAto the z community to help diagnose my problem. Keep in mind that I have installed gen 3 intakes along with motordyne exhaust. Untuned. This never threw a SEL for the 6 months I had these parts on. Any comments on what I should do to trouble shoot and or resolve this problem will be appreciated.
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Old 11-12-2012, 08:29 AM   #2 (permalink)
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Originally Posted by igota21incher View Post
After a long search and an even longer wait, I finally found some gas for my z at*a local gas station. *The brand of gas I cannot actually recall, but was definitely not a big chain like sonoco, which I usually use. I told them to fill me up with 91. Shortly after the trip home, my SEL turned on. I immediately checked my gas cap to make sure everything was tightened properly, drove around for a little bit, the light was still on. *The next day I turned on my car, warmed her up for a good 5 min and noticed an unusually high idle rpm. With the car warmed up, the tach read 1000-1100. * This worried me, so I took the car to autozone to check the SEL code. Came back to the dreaded p0300 aka multiple random misfire. My father mentioned earlier that no named brand gasoline companies sometimes dilute their gas with water. This suspicion was confirmed by the gm at autozone. So I purchased some injector cleaner to help remedy the problem.*

This message goes out both as a WARNING and a PLEAto the z community to help diagnose my problem. Keep in mind that I have installed gen 3 intakes along with motordyne exhaust. Untuned. This never threw a SEL for the 6 months I had these parts on. Any comments on what I should do to trouble shoot and or resolve this problem will be appreciated.
Thanks!
This is one of the reasons the Z will stay in the garage until things get back to normal. My uncle had the same issue in his X-terra when he filled up at a no-name gas station in Jersey. It was def water. They pumped the gas out and re-filled it with better quality gas. It basically had to work it's way out of the system. Injector cleaner won't really do anything. The injectors are fine. It's more likely that the octane rating is much lower than advertised. If it's still runs, your best bet is to go easy on this tank of gas and flush it out.
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Old 11-14-2012, 01:21 PM   #3 (permalink)
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As long as you stay away from stations that were submerged under water you should be okay, water settles at the bottom of the tanks and the pickup is floating so is rare that you will pump in gas.
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Old 01-24-2013, 09:28 AM   #4 (permalink)
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As long as you stay away from stations that were submerged under water you should be okay, water settles at the bottom of the tanks and the pickup is floating so is rare that you will pump in gas.


Also avoid filling up any place that is currently or just recently got refilled... It stirs up all the sludge and nasty things for you engine and you are more likely to have issues

Not all gas (and gas stations) are created equal, would you feed yourself garbage out of the trash to save a few buck?
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