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Re: Puff/Miss in exhaust.
Could be several things, but start with exhaust leaks. That's the easiest thing to check. Look at all hoses carefully. I found a cracked one my BIL had missed by pulling it off and looking at the back side. If all that checks out then ignition parts can cause that including defective spark plug.
As LeeH mentioned check for crossfiring also. I like to do it at night by misting the dist cap and wires with a fine spray from water bottle.
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68 GMC 250/3 speed Saginaw p/b p/s
69 Chevy 350/350 currently in pieces still lookin for a cab
06 Trailblazer
I just want a vehicle that I can work on, that won't talk to me, leave error msgs or keep track of how I drive...
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