My engine took a dump WTF!!!!
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Joined: May 2006
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From: Sugar Land, TX
My engine took a dump WTF!!!!
Here is the story. Was setting P0420 code, cat ineffecient. I thought screw it, I'm going to buy test pipes. I took my old cats off, Crawford HFC BTW, and what did I see?? Absolutely nothing, the right side cat was an empty shell.
Where did the chunks go? I removed the muffler and shook out a lttle less than half the guts. Where did the other half go?? Figure 1/4 went out the tail pipe. That leaves me with a sizable chunk of cat missing.
Back to the story. Two days later my wife was following me. She said everytime I stepped on the gas from a stop it woukd puff smoke. I blew it off thinking "a" she's a girl what does she know and "b" it's probably gas that was getting eaten by the cats. It gets better.
A week after putting on the test pipes I was leaving a stop light and what did I see in my rearview? A huge cloud of white oil smoke. I got home, pulled into the garage, let it idle for 1 minute then revved it to 1500-1800 rpm. A massive cloud of smoke filled the air.
It's getting worse. I have heard stories of cat being sucked back into the engine because of the variable valve timing. I'm not blaming Crawford or Megan for this. It just pisses me off that I sing the praises of G35 and Nissan for the past 5 years and bull**** like this happens. I can't afford a motor or heads or whatever it is and I can't afford a replacement car at this time. It just sucks hard...
Where did the chunks go? I removed the muffler and shook out a lttle less than half the guts. Where did the other half go?? Figure 1/4 went out the tail pipe. That leaves me with a sizable chunk of cat missing.
Back to the story. Two days later my wife was following me. She said everytime I stepped on the gas from a stop it woukd puff smoke. I blew it off thinking "a" she's a girl what does she know and "b" it's probably gas that was getting eaten by the cats. It gets better.
A week after putting on the test pipes I was leaving a stop light and what did I see in my rearview? A huge cloud of white oil smoke. I got home, pulled into the garage, let it idle for 1 minute then revved it to 1500-1800 rpm. A massive cloud of smoke filled the air.
It's getting worse. I have heard stories of cat being sucked back into the engine because of the variable valve timing. I'm not blaming Crawford or Megan for this. It just pisses me off that I sing the praises of G35 and Nissan for the past 5 years and bull**** like this happens. I can't afford a motor or heads or whatever it is and I can't afford a replacement car at this time. It just sucks hard...
Your problem is probably whatever destroyed the catalytic converters to begin with. The pieces of the cat. converter will only exit the exhaust so don't worry about that. The reason WHY you cat. converter blew to begin with is what you should be worried about.
Your car only had ONE fault code? How about oil consumption, how bad was it before the smoking?
Your car only had ONE fault code? How about oil consumption, how bad was it before the smoking?
Here is the story. Was setting P0420 code, cat ineffecient. I thought screw it, I'm going to buy test pipes. I took my old cats off, Crawford HFC BTW, and what did I see?? Absolutely nothing, the right side cat was an empty shell.
Where did the chunks go? I removed the muffler and shook out a lttle less than half the guts. Where did the other half go?? Figure 1/4 went out the tail pipe. That leaves me with a sizable chunk of cat missing.
Back to the story. Two days later my wife was following me. She said everytime I stepped on the gas from a stop it woukd puff smoke. I blew it off thinking "a" she's a girl what does she know and "b" it's probably gas that was getting eaten by the cats. It gets better.
A week after putting on the test pipes I was leaving a stop light and what did I see in my rearview? A huge cloud of white oil smoke. I got home, pulled into the garage, let it idle for 1 minute then revved it to 1500-1800 rpm. A massive cloud of smoke filled the air.
It's getting worse. I have heard stories of cat being sucked back into the engine because of the variable valve timing. I'm not blaming Crawford or Megan for this. It just pisses me off that I sing the praises of G35 and Nissan for the past 5 years and bull**** like this happens. I can't afford a motor or heads or whatever it is and I can't afford a replacement car at this time. It just sucks hard...
Where did the chunks go? I removed the muffler and shook out a lttle less than half the guts. Where did the other half go?? Figure 1/4 went out the tail pipe. That leaves me with a sizable chunk of cat missing.
Back to the story. Two days later my wife was following me. She said everytime I stepped on the gas from a stop it woukd puff smoke. I blew it off thinking "a" she's a girl what does she know and "b" it's probably gas that was getting eaten by the cats. It gets better.
A week after putting on the test pipes I was leaving a stop light and what did I see in my rearview? A huge cloud of white oil smoke. I got home, pulled into the garage, let it idle for 1 minute then revved it to 1500-1800 rpm. A massive cloud of smoke filled the air.
It's getting worse. I have heard stories of cat being sucked back into the engine because of the variable valve timing. I'm not blaming Crawford or Megan for this. It just pisses me off that I sing the praises of G35 and Nissan for the past 5 years and bull**** like this happens. I can't afford a motor or heads or whatever it is and I can't afford a replacement car at this time. It just sucks hard...
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Not sure how you blame Infiniti for a broken aftermarket cat from Crawford?
Check your oil level and water level. Check to see if you have a bunch of chocolate milka shake in your coolant.
Report back
I suspect an oil consumption issue that lead to an overheat. Result is a blown HG
Check your oil level and water level. Check to see if you have a bunch of chocolate milka shake in your coolant.
Report back
I suspect an oil consumption issue that lead to an overheat. Result is a blown HG
Your problem is probably whatever destroyed the catalytic converters to begin with. The pieces of the cat. converter will only exit the exhaust so don't worry about that. The reason WHY you cat. converter blew to begin with is what you should be worried about.
Your car only had ONE fault code? How about oil consumption, how bad was it before the smoking?
Your car only had ONE fault code? How about oil consumption, how bad was it before the smoking?
I bet the OP has it backwards... OC or HG issue leading to blown cat, not the other way around.
I'd say 90% of people can't tell the difference...they both look very similar in color. What is not similar is how they burn. Oil smoke will stay MUCH longer lingering around and will smell AWFUL while coolant smoke will dissipate much quicker and will not smell quite as bad.
I've heard of the cats falling apart and being sucked into engines from Infiniti technicians. This is why they don't like HFC. However, I don't listen to them much since they normally just go by the book about everything and just want to make money.
The altima has this problem on both the 2.5 and 3.5 motors, but mostly only on the 2.5 I4 does the cat get sucked up into the engine. Happened to my ex gf's 02 altima. At 100k miles the cat material got sucked into the motor and marred the cylinder walls causing it to burn 4 qts of oil per 1000 miles.
