1992 240sx shakes

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ponchs13
Posts: 69
Joined: Tue Oct 05, 2010 8:11 pm
Car: 1992 nissan 240sx
Location: bay area

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My 92 240sx shakes when turning off i believe its dieseling how do i fix the problem car has over 201000 miles injen intake pacesetter headers test pipe with stock exhaust

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sx moneypit
Posts: 8911
Joined: Wed Aug 26, 2009 2:54 am
Car: 2010 Nissan 370Z
1986 Toyota MR2
Location: Memphis,Tn.

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How fast is the engine idling?
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ponchs13
Posts: 69
Joined: Tue Oct 05, 2010 8:11 pm
Car: 1992 nissan 240sx
Location: bay area

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it idles at between 900 and 1000 rpms
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PapaSmurf2k3
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Posts: 19000
Joined: Thu Nov 21, 2002 3:20 pm
Car: 2017 Corvette, 2018 Focus ST, 1993 240sx truck KA Turbo.
Location: Merrimack, NH

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One simple way to diagnose/fix dieseling is to run higher octane fuel. I'd give that a shot first. If your spark plugs are uber messed up, they can create hot spots, which can lead to dieseling as well.
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