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#4692286 - 03/12/18 09:32 AM 2002 Infinity Q45 smoking under hood
Gito Offline


Registered: 08/30/09
Posts: 590
Loc: CA
2002 Q45 Infinity with approximately 205k miles.

What would cause excess smoke under the hood. Oil cap is in place and car is running fine. A lot of smoke coming out from under the hood.
Will be towing the car to be safe.

Any advice is greatly appreciated

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#4692290 - 03/12/18 09:46 AM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18178
Loc: Dallas,Tx USA
Look to see if you have valve cover gaskets that may be leaking oil into the exhaust.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4692298 - 03/12/18 09:57 AM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
Trav Offline


Registered: 11/20/06
Posts: 18900
Loc: MA, Mittelfranken.de
Does it smell like burned oil?
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ASE L1, Master. Deutsch Meisterbrief.

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#4692315 - 03/12/18 10:25 AM Re: 2002 Infinity Q45 smoking under hood [Re: aquariuscsm]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18178
Loc: Dallas,Tx USA
Originally Posted By: aquariuscsm
Look to see if you have valve cover gaskets that may be leaking oil into the exhaust.


"On to" the exhaust I meant.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4692620 - 03/12/18 04:28 PM Re: 2002 Infinity Q45 smoking under hood [Re: aquariuscsm]
Gito Offline


Registered: 08/30/09
Posts: 590
Loc: CA
Originally Posted By: aquariuscsm
Originally Posted By: aquariuscsm
Look to see if you have valve cover gaskets that may be leaking oil into the exhaust.


"On to" the exhaust I meant.


Looks like oil leaking onto the exhaust. Maybe a broken oil line. Haven't checked anything else. We had to tow it.

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#4693175 - 03/13/18 08:07 AM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
MarkM66 Offline


Registered: 10/19/10
Posts: 1544
Loc: stl
Originally Posted By: Gito
Originally Posted By: aquariuscsm
Originally Posted By: aquariuscsm
Look to see if you have valve cover gaskets that may be leaking oil into the exhaust.


"On to" the exhaust I meant.


Looks like oil leaking onto the exhaust. Maybe a broken oil line. Haven't checked anything else. We had to tow it.


What kind of "oil line?" Does it have an oil cooler?

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#4693193 - 03/13/18 08:26 AM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
aquariuscsm Offline


Registered: 12/30/06
Posts: 18178
Loc: Dallas,Tx USA
I'm thinking it's your valve cover gaskets.
_________________________
1996 Nissan 300ZX 5-speed,Arctic Pearl(#175 of 300)
Quaker State Ultimate Durability 10W30
2012 Honda Accord Coupe EX-L 2.4,auto,San Marino Red
Pennzoil Platinum 0W20



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#4693796 - 03/13/18 06:46 PM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
mk378 Offline


Registered: 09/27/15
Posts: 1421
Loc: USA
If you have it while it is smoking, you should open the hood and try to localize where it is coming from.

But yes, the most common reason for smoke without the car breaking down or completely catching on fire is an oil leak dripping onto the exhaust.

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#4694347 - 03/14/18 09:04 AM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
Gito Offline


Registered: 08/30/09
Posts: 590
Loc: CA
Turns out it was a radiator hose that came off and sprayed coolant on the exhaust manifolds.

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#4699644 - 03/19/18 11:36 AM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
zorobabel Offline


Registered: 01/27/11
Posts: 479
Loc: Anaheim, CA
Thanks for posting the conclusion.
_________________________
1997 Maxima 175k, Delvac 15w40, Wix 51315
2004 Corolla 189k, VWB 5w20 + SSS 10w40, MGL4967

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#4699964 - 03/19/18 05:18 PM Re: 2002 Infinity Q45 smoking under hood [Re: Gito]
NoNameJoe Offline


Registered: 06/03/15
Posts: 414
Loc: New York
Next time you can usually tell by the smell and color of the smoke. Oil usually results in bluish/black colored smoke with that truck exhaust smell. Coolant results in a white cloud that smells somewhat sweet.

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