CarForum.net - Car Forums, Automotive News and Community
Home Gallery Register Calendar Members List

Go Back   CarForum.net - Car Forums, Automotive News and Community > General Car Discussion > General Automotive Discussion

Reply
LinkBack Thread Tools
Unread 10-29-2008, 11:45 PM   #1
Retired Director
 
Gandalf's Avatar
 
Join Date: Aug 2006
Location: Indiana, USA
Posts: 1,489
Rep: 36 Gandalf is on a distinguished road
Default Cracked exhaust manifold

Hey guys, I'm rarely ever on here (though I've been "stalking" this forum for a while) so I hope you don't mind me posting a question. Anyway, I just bought my girlfriend a car...I don't have a ton of money, so I ended up getting her a 1999 Mitsubishi Mirage. So, to get to my question, the car is fairly decent, but with a couple of problems - the biggest one being the slight crack in the exhaust manifold. I honestly can't see it, but my mechanic found it, and I can smell it at times. It'll cost 400+ to fix it, (I'm not capable of fixing it myself - or at least too skittish to attempt it), hence the high price. Anyway, is it unsafe to drive like that? I mean, obviously I don't want to give her a car that's going to kill her, however, I spent more or less my last dime on this car, and neither of us has the money to get it fixed.

Thanks in advance for any thoughts on the matter!
__________________
Vehicles: 1993 240SX
1990 Katana 750

Gandalf is offline  
Reply With Quote
Unread 10-29-2008, 11:49 PM   #2
Veteran Member
 
Mr Car Guy's Avatar
 
Join Date: Mar 2008
Location: Surrey, BC, Canada
Posts: 2,052
Rep: 186 Mr Car Guy has a spectacular aura aboutMr Car Guy has a spectacular aura about
Default

Hey

Mostly it's the noise that motivates your replacing a cracked manifold.
But if you get exhaust fumes coming it the car, it's not cool! Those fumes are dangerous. I would look into getting the manifold replaced. Checked for used, or is that price for a used manifold?
__________________
2003 GMC Envoy 5.3

Mr Car Guy is offline Mr Car Guy's Gallery  
Reply With Quote
Unread 10-30-2008, 07:26 AM   #3
Retired Director
 
Gandalf's Avatar
 
Join Date: Aug 2006
Location: Indiana, USA
Posts: 1,489
Rep: 36 Gandalf is on a distinguished road
Default

Well, I can't hear it at all - but sometimes (not always, but when starting the car, and at random times) I can smell it. And the $400 was quoted by a mechanic, for parts (new) and labor. (Like I said, I don't think I could do it myself.)
__________________
Vehicles: 1993 240SX
1990 Katana 750

Gandalf is offline  
Reply With Quote
Unread 10-30-2008, 06:29 PM   #4
Now accepting bribes.
 
lautinjr's Avatar
 
Join Date: Oct 2007
Location: Currently Las Vegas
Posts: 4,311
Rep: 193 lautinjr has a spectacular aura aboutlautinjr has a spectacular aura about
Default

400 hundred is a godd price for that I would have it done but is it exhaust fumes or gas your smelling.

lautinjr is offline lautinjr's Gallery  
Reply With Quote
Unread 10-30-2008, 08:44 PM   #5
GDP
Retired Director
 
GDP's Avatar
 
Join Date: Oct 2008
Location: NC
Posts: 518
Rep: 20 GDP is on a distinguished road
Default

if its a cracked manifold its going to be exhaust ...... mixed in with some fuel fumes becuase it has not yet passed through the cats.

As far as danger, the fumes will pose the most. But even then unless its a super strong smell I might still use it until you can afford to pay to replace it. As far as drivability, not much. You will loose some backpreasure so it might not run 100% right but should still perform decently enough.

Honestly if you can find the crack you could always JB weld it =P but only as a temp fix.

GDP is offline  
Reply With Quote
Unread 10-30-2008, 09:50 PM   #6
Now accepting bribes.
 
lautinjr's Avatar
 
Join Date: Oct 2007
Location: Currently Las Vegas
Posts: 4,311
Rep: 193 lautinjr has a spectacular aura aboutlautinjr has a spectacular aura about
Default

here's the thing if your smelling gas then it's not a cracked manifold matter fact you should here it if it was leaking enough to smell it at all unless you do here it but don't realize what your hearing. It won't case the car to run rough at most you might loose 5-10lbs low end torque and burn a little extra gas because the O2 sensor's will richen the mix which will in turn ruin the cat. The Cat's don't scavenge excesses fumes matter affect the extra gas will raise the temp in the cat's causing premature failure.

The reason I ask what are you smelling is because the evap canister and syliniod on that car is located on the passenger front by the firewall and are known to crack and leak but it will only create a smell occasionally depending on the cycle it's on. and the intake for the interior air vents is located about 12"'s up on the cowl this will cause a gas smell inside the car and because it's only periodicly alot of people think it must be from another car.

I seriously doubt your smelling exhaust because a leak so small you can't really hear it would disapate before it ever got inside the car. I think you need a new Mechanic.

lautinjr is offline lautinjr's Gallery  
Reply With Quote
Unread 10-31-2008, 08:35 AM   #7
Retired Director
 
Gandalf's Avatar
 
Join Date: Aug 2006
Location: Indiana, USA
Posts: 1,489
Rep: 36 Gandalf is on a distinguished road
Default

Quote:
Originally Posted by lautinjr View Post
here's the thing if your smelling gas then it's not a cracked manifold matter fact you should here it if it was leaking enough to smell it at all unless you do here it but don't realize what your hearing. It won't case the car to run rough at most you might loose 5-10lbs low end torque and burn a little extra gas because the O2 sensor's will richen the mix which will in turn ruin the cat. The Cat's don't scavenge excesses fumes matter affect the extra gas will raise the temp in the cat's causing premature failure.

The reason I ask what are you smelling is because the evap canister and syliniod on that car is located on the passenger front by the firewall and are known to crack and leak but it will only create a smell occasionally depending on the cycle it's on. and the intake for the interior air vents is located about 12"'s up on the cowl this will cause a gas smell inside the car and because it's only periodicly alot of people think it must be from another car.

I seriously doubt your smelling exhaust because a leak so small you can't really hear it would disapate before it ever got inside the car. I think you need a new Mechanic.
Wait, so you think it's the evap canister and/or sylinoid? Because you're right, I do only smell it occasionally. I'm not worried about losing backpressure, etc - I just don't want to poison my girlfriend. lol
And if that's what it is, will it be more or less expensive to fix, do you think? (I'm assuming temporarily fixing it by welding isn't an option if it's either of those, right? [noob question, I know])

Thanks!
__________________
Vehicles: 1993 240SX
1990 Katana 750

Gandalf is offline  
Reply With Quote
Unread 10-31-2008, 11:12 AM   #8
Now accepting bribes.
 
lautinjr's Avatar
 
Join Date: Oct 2007
Location: Currently Las Vegas
Posts: 4,311
Rep: 193 lautinjr has a spectacular aura aboutlautinjr has a spectacular aura about
Default

about the same price may be a little cheaper but are you smelling gas or exhaust?

lautinjr is offline lautinjr's Gallery  
Reply With Quote
Unread 10-31-2008, 12:56 PM   #9
Retired Director
 
Gandalf's Avatar
 
Join Date: Aug 2006
Location: Indiana, USA
Posts: 1,489
Rep: 36 Gandalf is on a distinguished road
Default

Definitely exhaust, not gas.
__________________
Vehicles: 1993 240SX
1990 Katana 750

Gandalf is offline  
Reply With Quote
Unread 10-31-2008, 07:04 PM   #10
GDP
Retired Director
 
GDP's Avatar
 
Join Date: Oct 2008
Location: NC
Posts: 518
Rep: 20 GDP is on a distinguished road
Default

depending on the shape of the car excess gas fumes do exit outta the exhaust, so it could still be a cracked manifold.

GDP is offline  
Reply With Quote
Reply

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 02:54 AM.

Shogun Interactive Development Copyright 2015 Shogun Interactive Development. All rights reserved.