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Oil smells like fuel

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Old 06-14-2023, 08:41 PM
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Buy a denso unit, they are the makers new.
Old 06-14-2023, 08:46 PM
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Out of curiosity, what is the cost of the OEM part?
Old 06-14-2023, 08:58 PM
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Or a Hitachi - Made in Germany - $350 - https://www.ebay.com/itm/295257614062
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Old 06-14-2023, 09:08 PM
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Originally Posted by statgator
Out of curiosity, what is the cost of the OEM part?
Way too much lol! Over $600
Old 06-17-2023, 11:17 AM
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New plugs and O2 sensor are installed. Plus, I just got the engine oil changed...so lets see what happens over the next few hundred miles. What do you think of the condition of the old spark plugs? They have just under 10k miles.





Old 06-17-2023, 11:20 AM
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While I was "in there" I took the liberty to use my new bore scope to take a peek at the number five cylinder. Looks a little crusty to me, lol, so I added some carbon/fuel injector cleaner to the fuel system too.




Old 06-17-2023, 12:05 PM
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Lots of short trips? Plugs look carbony.
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Old 06-17-2023, 02:35 PM
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Originally Posted by A8L_New_England
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Or a Hitachi - Made in Germany - $350 - https://www.ebay.com/itm/295257614062
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The German Hitachi's are $309 on eBay and Amazon. (HPP0023)
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Old 06-18-2023, 03:03 PM
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Thanks for the input. I'm going to sit-tight for the next few days and see what happens. Hopefully, I won't need the HPFP afterall, but time will tell.
Old 06-21-2023, 10:16 AM
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Default I had the same problem

I have a 2017 Audi A8L 4.0l and my oil smelled like fuel. I also had a strong fuel smell from the exhaust at idle. I also found out that after driving the car and letting it go through the heat cycle I would leave the car off for 30-50 minutes then try to start it up it would hard crank. I first just had fuel smell in oil then all these popped up. I wanted to change both HPFPs because I got a good deal from the auto zone but found out when pulling out the passenger side HPFP that the passenger was leaking because there was fuel sitting. I still ended up changing both and then changing the oil. I have no problems today
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