300 six downpipe

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Sep 30, 2004 | 02:30 PM

coker0290

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From: in the sticks

300 six downpipe

i have a 1990 f150 with 300 six. the downpipe off of the manifolds is cracked around the O2 sensor and i plan to fix it by brazing. now the question: do i have to remove the o2 sensor to braze the exhaust or can i just leave it in.
thanks

Sep 30, 2004 | 09:19 PM

wickymustang

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REMOVE IT!!! If you don't it will royally mess up the sensor.

Sep 30, 2004 | 11:03 PM

coker0290

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i thought so but wasnt sure. is brake cleaner good to use to clean it?

Oct 1, 2004 | 09:10 AM

wickymustang

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To clean the sensor or the pipe prior to brazing?

Oct 1, 2004 | 10:19 AM

coker0290

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the sensor

Oct 1, 2004 | 10:42 PM

wickymustang

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I'm not positive, but I think that it would be too risky to do that. It would most likely mes up the sensor by covering it, even though it evaporates. Just replace with a new one.