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2002 Infinity Q45 smoking under hood #4692286
03/12/18 09:32 AM
03/12/18 09:32 AM
Joined: Aug 2009
Posts: 664
CA
Gito Offline OP
Gito  Offline OP
Joined: Aug 2009
Posts: 664
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

Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4692290
03/12/18 09:46 AM
03/12/18 09:46 AM
Joined: Dec 2006
Posts: 18,630
Dallas,Tx USA
aquariuscsm Offline
aquariuscsm  Offline
Joined: Dec 2006
Posts: 18,630
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
Quaker State Ultimate Durability 5W20

Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4692298
03/12/18 09:57 AM
03/12/18 09:57 AM
Joined: Nov 2006
Posts: 19,920
MA, Mittelfranken.de
Trav Offline
Trav  Offline
Joined: Nov 2006
Posts: 19,920
MA, Mittelfranken.de
Does it smell like burned oil?


ASE L1, Master. Deutsch Meisterbrief.
Re: 2002 Infinity Q45 smoking under hood [Re: aquariuscsm] #4692315
03/12/18 10:25 AM
03/12/18 10:25 AM
Joined: Dec 2006
Posts: 18,630
Dallas,Tx USA
aquariuscsm Offline
aquariuscsm  Offline
Joined: Dec 2006
Posts: 18,630
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
Quaker State Ultimate Durability 5W20

Re: 2002 Infinity Q45 smoking under hood [Re: aquariuscsm] #4692620
03/12/18 04:28 PM
03/12/18 04:28 PM
Joined: Aug 2009
Posts: 664
CA
Gito Offline OP
Gito  Offline OP
Joined: Aug 2009
Posts: 664
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.

Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4693175
03/13/18 08:07 AM
03/13/18 08:07 AM
Joined: Oct 2010
Posts: 1,574
stl
MarkM66 Offline
MarkM66  Offline
Joined: Oct 2010
Posts: 1,574
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?

Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4693193
03/13/18 08:26 AM
03/13/18 08:26 AM
Joined: Dec 2006
Posts: 18,630
Dallas,Tx USA
aquariuscsm Offline
aquariuscsm  Offline
Joined: Dec 2006
Posts: 18,630
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
Quaker State Ultimate Durability 5W20

Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4693796
03/13/18 06:46 PM
03/13/18 06:46 PM
Joined: Sep 2015
Posts: 1,528
USA
mk378 Online content
mk378  Online Content
Joined: Sep 2015
Posts: 1,528
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.

Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4694347
03/14/18 09:04 AM
03/14/18 09:04 AM
Joined: Aug 2009
Posts: 664
CA
Gito Offline OP
Gito  Offline OP
Joined: Aug 2009
Posts: 664
CA
Turns out it was a radiator hose that came off and sprayed coolant on the exhaust manifolds.

Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4699644
03/19/18 11:36 AM
03/19/18 11:36 AM
Joined: Jan 2011
Posts: 561
Anaheim, CA
zorobabel Offline
zorobabel  Offline
Joined: Jan 2011
Posts: 561
Anaheim, CA
Thanks for posting the conclusion.


1997 Maxima 181k, Edge 10w30, K&N HP-1003
2004 Corolla 191k, VWB 5w20 + SSS 10w40, MGL4967
Re: 2002 Infinity Q45 smoking under hood [Re: Gito] #4699964
03/19/18 05:18 PM
03/19/18 05:18 PM
Joined: Jun 2015
Posts: 490
New York
NoNameJoe Offline
NoNameJoe  Offline
Joined: Jun 2015
Posts: 490
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.


2015 Civic LX Coupe

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