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| Need Help FAST - Supposed to leave tomorrow; losing power, stalling out | |
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| Tweet Topic Started: Dec 30 2010, 10:03 PM (2,246 Views) | |
| 91 ragtop | Jan 3 2011, 08:30 PM Post #31 |
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I'm thinking that all the carb cleaner that you used to clean out the carbon caused the white smoke. Ken... |
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| Jittney | Jan 4 2011, 12:08 AM Post #32 |
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Anchorage 92 XFi
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@ ktngrandma, awesome story about getting your little car on the ferry! Made my day! ![]() |
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| 944door | Jan 4 2011, 11:24 AM Post #33 |
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Let us know how you make out
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| wizard 03 | Nov 14 2012, 03:08 PM Post #34 |
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Ok, Ill give everyone a little insight on glogged cats as it has occured to me allready. When a cat goes bad, the car will feel sluggish to downright compleatly out of power. Which only makes sense of course as there is so much preasure backing up that the cylinders is unable to evacuate the exhaust and connot bring in any new fuel and oxygen to burn resulting in a huge loss of power being made to do any kind of work. Kinda like a super sized EGR valve from hell. ![]() Also, due to the excessive preasure, there is huge amounts of blowby past the rings. Any oil, coolant, or moisture in the crankcase will be heated with direct exhaust gases. The expansion in the crank case will try to escape in any manor possible...Blowing out the front and rear main seal, the camshaft seals, and also including going into the air breather from the PCV valve and valve cover for the PCV......This is your white smoke I bealive. Also, the oddest thing about a clogged cat is while you are in neutral or park, the engine acts normal and can rev way up without any odd problems rearing their ugly head....Truely peculiar as you would think that the engine would stumble as the clogged exhaust filled up, but entirely possible as only when you need the engine to work harder does it produce more preasure in the exhaust system. {This also has happened to me.} As for clearing out your cat, my best advice is to use a straight and very strong rod to clear out the old honey combing. Just insert it into the straight part of the exhaust system and use a hammer to pound it past the honey comb, withdrawl, find anouther place in the honey comb and repeat. If you don't wish to do this, you may also replace the cat with either a straight pipe, muffler, or as I prefered, a glasspack tube. While it may make sense that you might be able to "blow out" the garbage by useing a air compressor and pushing the junk out backwards of the exhaust flow, sadly this is not the case as usually the cat welds anything that gets stuck in it just before it quits working. I want to say that the catalytic converter operates at tempuratures well over many hundreds of degrees and if there was a large amount of junk to hit it all at once, it would heat up to the point of melting, allowing it to flow slowly into the honey combing just before it quits working entirely and allowing it to cool and set up and plugging the honey combing indeffinantly. For each and every cause, there is an effect. However in the case of catalytic converts {cat's}, the only true effect is an impact on the enviroment. Between you and me however, that is the only effect. I do know for a fact that removeing a catalytic converter will improve preformance, and currently it is bealived that it improves gas mileage as well. To a very very limited degree. {the engine has to work push the exhaust through the catalytic converter. That extra power used to "PUSH" the exhaust is not being used to push the car, therefor you cannot gain gas mileage from a catalytic converter, but you can loose power as you just experianced.} As for any engine damage, loss of MPG's, or anything destructive from not useing a catalytic converter. I personally doubt it. |
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3:18 AM Jul 11