How Do Mechanics Pinpoint The Exact Source of an Exhaust Leak?
10-13-2008, 11:28 PM
#1
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How Do Mechanics Pinpoint The Exact Source of an Exhaust Leak?
In plumbing I remember a guy sprayed soapy water on pipes to check for leaks. Does anyone know the common procedure the garage uses?
By listeneing very closely to the repetitive crackling/putting sound coming from the engine when I hit the accel, i'm not exactly sure right now that the leak is in fact coming from the snapped off front exhaust manifold stud. It does sound like it's coming from the engine but I don't know where.
It can't be post LH & RH Manifold to Y Pipe flange, since those components have already been replaced.
By listeneing very closely to the repetitive crackling/putting sound coming from the engine when I hit the accel, i'm not exactly sure right now that the leak is in fact coming from the snapped off front exhaust manifold stud. It does sound like it's coming from the engine but I don't know where.
It can't be post LH & RH Manifold to Y Pipe flange, since those components have already been replaced.
10-14-2008, 12:15 AM
#2
In plumbing I remember a guy sprayed soapy water on pipes to check for leaks. Does anyone know the common procedure the garage uses?
By listeneing very closely to the repetitive crackling/putting sound coming from the engine when I hit the accel, i'm not exactly sure right now that the leak is in fact coming from the snapped off front exhaust manifold stud. It does sound like it's coming from the engine but I don't know where.
It can't be post LH & RH Manifold to Y Pipe flange, since those components have already been replaced.
By listeneing very closely to the repetitive crackling/putting sound coming from the engine when I hit the accel, i'm not exactly sure right now that the leak is in fact coming from the snapped off front exhaust manifold stud. It does sound like it's coming from the engine but I don't know where.
It can't be post LH & RH Manifold to Y Pipe flange, since those components have already been replaced.
10-14-2008, 06:10 AM
#3
There are two(2) places where exhaust leaks typically/most commonly occur on these cars...
1. Broken exhaust manifold studs.
2. Broken y-pipe flex section..
The putting sound you are hearing is most likely from broken exhaust manifold studs, look for black soot around the manifold flanges where they mount up to the heads.
1. Broken exhaust manifold studs.
2. Broken y-pipe flex section..
The putting sound you are hearing is most likely from broken exhaust manifold studs, look for black soot around the manifold flanges where they mount up to the heads.
10-14-2008, 06:33 AM
#4
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When it's not obvious/can't see soot- I like to put the car on the lift while it's running and use just the hose end of my automotive stethescope, works killer. However, you said at least one manifold stud is snapped...............
10-17-2008, 07:53 PM
#7
10-18-2008, 08:44 PM
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Aminus, you may want to think twice about using seafoam in the engine. I read a tech bulletin from Nissan that said NOT to use fuel additive cleaners or cleaning solutions in the engine, supposedly it may damage some seals. I used seafoam in the past but I'm staying away from it for now.
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