Weird exhaust leak question

KSU2004 · 03-18-08, 10:00 PM

the car is a 94 ls coupe, type II. When I crack the windows or open the sunroof I can slightly smell exhaust coming in. Not alot, but enough to notice.
I took it to the shop, and the mechanics said they couldn't find a single leak. They were pretty impressed being the car has 216,000 miles on it, and the exhaust was solid. Myself and them decided it might just be the cars ahead of me on the road.
I was working on it tonight and found that I could smell exhaust slightly while the car was running around the drivers side top of the engine, just under the fuel rail covers where the injectors are. I thought manifold gasket but that was checked, besides, I couldn't smell anything above the manifold, just right over the injectors in the middle.
Any ideas........... could the injector o-rings be letting exhaust past?

blackbird69 · 03-18-08, 11:45 PM

sry, dont know the answer the ur problem, but had to give a shout out to a kansas city guy, we should meet up some time

Ken · 03-19-08, 01:43 AM

maybe its not a leak but the exhaust smog from the rear itself.

KSU2004 · 03-19-08, 09:10 AM

Quote:

Originally Posted by blackbird69

sry, dont know the answer the ur problem, but had to give a shout out to a kansas city guy, we should meet up some time

Sure is a small world, I am in Olathe as well...... I will look for your red coupe. My coupe is a pearl white 94 ls......

KSU2004 · 03-19-08, 09:14 AM

Quote:

Originally Posted by Ken

maybe its not a leak but the exhaust smog from the rear itself.

Yeah, I am almost positive its coming from the spot on top of the engine, or maybe an overlooked header leak, Im not sure.. By the way, I think I can hear a air leaking from the same area, kindof a spraying sound that goes with the engine... I'm stumped?

Black Type II · 03-19-08, 09:25 AM

try using the trottle cable to accelerate the engine slightly to see if u see exhaust gases, and also try snapping the throttle to see if u can hear a louder leaking sound when engine speed declines from higher rpms

nocashrider · 03-19-08, 09:25 AM

what i did with my car was wait till it was really cold out and started it up so the exhaust steamed so i could see where it was coming from this might help you?

samblaze · 03-19-08, 11:16 AM

yea no cash has a good idea about the cold start. Check your PCV lines and make sure they're all clamped tight and I would also clean the EGR (there is a DIY I believe) and make sure those lines are all tight too. AFAIK those would be the two most common parts on the top of the engine bay where your problem might occur. Are you losing oil at all? Try starting the motor cold with the fuel rail covers off and see if you can see anything.

KSU2004 · 03-19-08, 11:43 AM

thanks, I will try all this tonight and let everyone know....

KSU2004 · 03-19-08, 08:06 PM

I found the problem, one of the spark plugs was loose, allowing the exhaust to come out the spark plug hole, hence why I heard the sound of air excaping. Runs better too. Thanks for the replies.....

samblaze · 03-19-08, 08:21 PM

^^ Thanks for letting us know what the solution was!! ^^ Makes the thread complete!

Black Type II · 03-19-08, 10:13 PM

how loose was it? and how could that have happened? forgot to tighten her down?

KSU2004 · 03-20-08, 09:26 AM

I have only had the car 2 1/2 months, so it must have been from the previous owner. It was about 1 to 1 1/2 turns loose. I don't know if maybe it just worked its way loose or what...

Black Type II · 03-20-08, 09:52 AM

dam ur gas mileage didnt suck?

KSU2004 · 03-20-08, 10:11 AM

Suprisingly it wasn't that bad, I have been averaging around 20-24 mpg. Hopefully I will see an improvement now.

03-18-08, 10:00 PM	#1 (permalink)
KSU2004 Registered User Join Date: Jan 2008 Location: KC Posts: 10 Car 1: 1994 Legend Coupe iTrader: (0)	Weird exhaust leak question FIXED** the car is a 94 ls coupe, type II. When I crack the windows or open the sunroof I can slightly smell exhaust coming in. Not alot, but enough to notice. I took it to the shop, and the mechanics said they couldn't find a single leak. They were pretty impressed being the car has 216,000 miles on it, and the exhaust was solid. Myself and them decided it might just be the cars ahead of me on the road. I was working on it tonight and found that I could smell exhaust slightly while the car was running around the drivers side top of the engine, just under the fuel rail covers where the injectors are. I thought manifold gasket but that was checked, besides, I couldn't smell anything above the manifold, just right over the injectors in the middle. Any ideas........... could the injector o-rings be letting exhaust past? Last edited by KSU2004 : 03-19-08 at 08:03 PM.

03-18-08, 11:45 PM	#2 (permalink)
blackbird69 Registered User Join Date: Jan 2007 Location: olathe, ks Posts: 222 Car 1: 1991 acura legend coupe Car 2: 2009 acura tsx iTrader: (0)	sry, dont know the answer the ur problem, but had to give a shout out to a kansas city guy, we should meet up some time __________________ Yea... Money comes, money goes, its the life of a guy who loves his car so much that he puts all money into it, even risking being single

03-19-08, 01:43 AM	#3 (permalink)
Ken aka desired_speeds Join Date: Sep 2002 Location: The Hella Part of Cali Posts: 7,279 Car 1: 91 Honda Legend 5-speed (L) Car 2: 87 Honda Legend 2.5L Car 3: 96 Honda Inspire 32V iTrader: (2)	maybe its not a leak but the exhaust smog from the rear itself. __________________ . k e n

03-19-08, 09:25 AM	#6 (permalink)
Black Type II Registered User Join Date: Aug 2005 Location: Jamaica, Queens Posts: 3,661 Car 1: 1995 Blk on Blk LS Coupe Car 2: 94 Honda Accord-4/S Car 3: 1986 Buick Regal iTrader: (2)	try using the trottle cable to accelerate the engine slightly to see if u see exhaust gases, and also try snapping the throttle to see if u can hear a louder leaking sound when engine speed declines from higher rpms __________________ Plans: Repaint car Granada Black, Custom interior (not that kinda custom), Navi unit, red or glow gauge needles, Hrant floor mats, remote starter Whats done: IS300 wheels, JDM headlights with 6000k HIDs, JDM navi console, LED backlit gauges

03-19-08, 09:25 AM	#7 (permalink)
nocashrider Go grab your bottle today Join Date: Feb 2008 Location: Puyallup Washington Posts: 280 Car 1: 95 Acura Integra Car 2: 91 Toyota MR2 Car 3: Hopefully 95 Legend iTrader: (0)	what i did with my car was wait till it was really cold out and started it up so the exhaust steamed so i could see where it was coming from this might help you? __________________ It's better to keep your mouth shut and give the impression that you're stupid than to open it and remove all doubt.

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03-19-08, 11:16 AM	#8 (permalink)
samblaze Sherwood GS Join Date: Oct 2007 Location: Lakewood, OH Posts: 1,766 iTrader: (10)	yea no cash has a good idea about the cold start. Check your PCV lines and make sure they're all clamped tight and I would also clean the EGR (there is a DIY I believe) and make sure those lines are all tight too. AFAIK those would be the two most common parts on the top of the engine bay where your problem might occur. Are you losing oil at all? Try starting the motor cold with the fuel rail covers off and see if you can see anything. __________________ 86 Saab 900S Coupe 5MT 94 Acura Legend GS 6MT 04 Subaru Forester XS A/T

03-19-08, 11:43 AM	#9 (permalink)
KSU2004 Registered User Join Date: Jan 2008 Location: KC Posts: 10 Car 1: 1994 Legend Coupe iTrader: (0)	thanks, I will try all this tonight and let everyone know....

03-19-08, 08:06 PM	#10 (permalink)
KSU2004 Registered User Join Date: Jan 2008 Location: KC Posts: 10 Car 1: 1994 Legend Coupe iTrader: (0)	I found the problem, one of the spark plugs was loose, allowing the exhaust to come out the spark plug hole, hence why I heard the sound of air excaping. Runs better too. Thanks for the replies.....

03-19-08, 08:21 PM	#11 (permalink)
samblaze Sherwood GS Join Date: Oct 2007 Location: Lakewood, OH Posts: 1,766 iTrader: (10)	^^ Thanks for letting us know what the solution was!! ^^ Makes the thread complete! __________________ 86 Saab 900S Coupe 5MT 94 Acura Legend GS 6MT 04 Subaru Forester XS A/T

03-19-08, 10:13 PM	#12 (permalink)
Black Type II Registered User Join Date: Aug 2005 Location: Jamaica, Queens Posts: 3,661 Car 1: 1995 Blk on Blk LS Coupe Car 2: 94 Honda Accord-4/S Car 3: 1986 Buick Regal iTrader: (2)	how loose was it? and how could that have happened? forgot to tighten her down? __________________ Plans: Repaint car Granada Black, Custom interior (not that kinda custom), Navi unit, red or glow gauge needles, Hrant floor mats, remote starter Whats done: IS300 wheels, JDM headlights with 6000k HIDs, JDM navi console, LED backlit gauges

03-20-08, 09:26 AM	#13 (permalink)
KSU2004 Registered User Join Date: Jan 2008 Location: KC Posts: 10 Car 1: 1994 Legend Coupe iTrader: (0)	I have only had the car 2 1/2 months, so it must have been from the previous owner. It was about 1 to 1 1/2 turns loose. I don't know if maybe it just worked its way loose or what...

03-20-08, 09:52 AM	#14 (permalink)
Black Type II Registered User Join Date: Aug 2005 Location: Jamaica, Queens Posts: 3,661 Car 1: 1995 Blk on Blk LS Coupe Car 2: 94 Honda Accord-4/S Car 3: 1986 Buick Regal iTrader: (2)	dam ur gas mileage didnt suck? __________________ Plans: Repaint car Granada Black, Custom interior (not that kinda custom), Navi unit, red or glow gauge needles, Hrant floor mats, remote starter Whats done: IS300 wheels, JDM headlights with 6000k HIDs, JDM navi console, LED backlit gauges

03-20-08, 10:11 AM	#15 (permalink)
KSU2004 Registered User Join Date: Jan 2008 Location: KC Posts: 10 Car 1: 1994 Legend Coupe iTrader: (0)	Suprisingly it wasn't that bad, I have been averaging around 20-24 mpg. Hopefully I will see an improvement now.

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