When do you think the 4.1 gets tired?

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Q_SHIP
Posts: 1525
Joined: Sat Nov 27, 2004 5:29 am
Car: 1999 Q45T with a billion miles.

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I have 184k on mine now. It sems to be getting a little slugish. I drive it pretty hard. Think it's that time?


maxnix
Posts: 22627
Joined: Mon Jul 22, 2002 8:11 pm
Car: 1995 Infiniti Q45
1995 Infiniti Q45t
2000 Infiniti Q45

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I doubt it. I have never seen a tired one, but Q45tech has seen more of them.

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Q_SHIP
Posts: 1525
Joined: Sat Nov 27, 2004 5:29 am
Car: 1999 Q45T with a billion miles.

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Hmmm, maybe a throttle body cleaning is due.

Q45tech
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Posts: 14296
Joined: Tue Apr 30, 2002 3:19 am
Car: 1990 Q45 342,400 miles 22 years ownership with original engine
1995 G20t 5 speed 334,000 miles 16" 2002 wheels - 205/50/16 Sr20ve vvl

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Tired is usually defined as compression below limits and clouds of blue smoke [beyond a minute or 2 after cold start].

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Skibane
Posts: 1056
Joined: Wed Apr 26, 2006 5:33 pm
Car: 2000 Q45 AE 110K
Location: San Antonio, TX

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I don't recall EVER seeing a Q that was smoking while being driven (unlike the dozen or so Mitsubishi/Chrysler smokers I see ever day! ).

Maybe we should start a contest to find and photograph the first one!

ScottJackson
Posts: 657
Joined: Fri Mar 26, 2004 6:08 pm
Car: 91 Q45, 92 Q45a, 93 Q45, 79 BMW 635CSi, 95 BMW 540i

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Dang, I shoulda taken a video of my '92 smoking Q. It was a bad injector o-ring that was making one cylinder run WAY rich. Luckily got it fixed quickly. My other Q, which is now a parts car, would smoke quite a bit on startup and would puff just a bit right when it was given a little gas after idling for a while. It had 200,000+ miles when I parked it and the previous owner followed a 20-30K mile oil change schedule.


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