MBRP Exhaust 97' F350 Problem!
Whenever I start up the truck the new exhaust makes a sucking sound for about 45 sec then goes to normal... I have no idea what the cause of this is but I dont like the sound of it and is not normal, help me out please, text me if need be cause i would like to know ASAP (530)356-9004
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it is most likely th exhaust back pressure valve closed. It is designed to create exhaust back pressure to warm the engine up faster. When the truck is cold it is normal.
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Ya, this thread is Void now, I contacted MBRP and they said it is the vacuum from the turbo to warm up the engine faster... my next question is, Should I wait till this vacuum sound goes away to drive? dont want to hurt me engine =)
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if its only for 45 seconds or so, then i would. its never good to just jump in a cold diesel and take off. glad ya got it figured out :U:
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yep gotcha, 45 sec is a lot of time though when ur late for work, lol... just messin, I will :U:
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Will close the thread down.
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