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 Old 01-11-2019, 11:35 AM   #1
 
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Default Rough Idle/Gas Smell After Fill Up

Hey guys wanted to bounce something off you.

Starting my MS6, after putting around 5 gallons into an almost empty tank two nights ago, it barley started and struggled to stay running. Sounded like it did when my MAF went bad. After revving it lightly a few times it evened out.

However the idle drops and then bounces back up roughly when at a stop. The next morning it threw a P2187 code. One I am very familiar with.

I figure its definitely an issue with the Evap system. Likely the purge valve or float in the gas tank allowing raw fuel into the charcoal canister. Reason I say that is when I filled it up completely last night, it ran even worse for a while after starting and I could smell raw fuel. Then it idled rough and inconsistent in rpm just like before.

I ordered a new purge valve and will be looking into it this weekend. Boost leak test, vacuum leak check (AP reads -10.2 at idle) and check the ignition.

Anyone ever experience this and find the solution?
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 Old 01-11-2019, 02:56 PM   #2
 
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Have you done any datalogs at idle? Cruising?
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 Old 01-12-2019, 04:42 AM   #3
 
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Default

Originally Posted by Thor Hammer View Post
I ordered a new purge valve and will be looking into it this weekend. B
90% the purge valve swap will fix it.
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 Old 01-14-2019, 10:23 AM   #4
 
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Originally Posted by mituc View Post
90% the purge valve swap will fix it.
Thanks mituc. It was indeed the purge valve causing the issue. It was stuck open.
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