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muffler blow out Sign up here! Search this forum this category all forums for All words Any words Whole Phrase (search options) Auto Repair Home>> Truck Repair>> Truck Repair Advice kevlar86 New User Nov 22, 2009, 2:01 PM Post #1 of 3 (4609 views) muffler blow out Sign In what would cause my muffler on my 94 s10 to blow out? also the truck bucked with bouncing rpms for about two weeks then today, pop! chickenhouse Enthusiast Nov 23, 2009, 6:56 PM Post #2 of 3 (4596 views) Re: muffler blow out Sign In Could possibly be a timing belt issue. If timing jumped, that would give the bucking and the radical RPM changes. Could have fired out of time and blew the muffler off. We used to do something like that with cars of the 50's or so. Get them going pretty good, then turn the key off and let it coast down- turn key back on and a big loud bang would result. Hammer Time Ultimate Carjunky / Moderator Nov 23, 2009, 7:19 PM Post #3 of 3 (4593 views) Re: muffler blow out Sign In It's a timing issue but not due to timing belt. It's ignition timing duing that not valve timing. Since you see the RPMs bouncing. I would be highly suspect of the Crank sensor or the ignition module, mostly the crank sensor. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ We offer help in answering questions, clarifying things or giving advice but we are not a substitute for an on-site inspection by a professional.   Automotive Repair     Auto Body Repair and Refinishing     Heating or AC Issues     Electrical and Wiring     Brake Systems     Car Stereo Repair Advice     General Discussions     Car Making Funny Noises     Engine Fault Codes     Engine Troubles     Exhaust Systems     Steering and Suspension     Transmission Troubles     Tricks of the Trade Automotive World     General Discussions     Antique Car Talk     Car Shows and Events     The Bargin Bin     Motor Vehicle Inspection     Car Care Tips     Traffic Tickets     Gasoline, Motor Oils, Concept Cars and Engines     Auto Insurance, Financing, Leases, Warranties Truck Repair     General Discussions     Truck Engine Repair     Truck Suspension Repair Motorcycle Repair     General Discussions     Motorcycle Engine Repair CarJunky     Open Posting     Board FAQ's     New Board Suggestions

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