Popping on decel Options

[markb]

As the title says, my stock 72 1.7 is popping a lot on deceleration. I thought it was an exhaust leak, but everything is tight. I thought it could be the stocker muffler wearing out, so I swapped it out for a fairly new Bursch that came on the new to me 71. Still pops, but now it's a louder, meaner sounding pop instead of the wimpy pops from the stock muffler. Any ideas on what's causing it? Injection misadjusted? Timing? Help me, please, it's driving me nuts! Not that it was much of a drive.... (IMG:style_emoticons/default/wacko.gif)

[Nemo914]

This thread is exactly what I needed! I have been dealing with an anoying popping on decel for over a year. I swapped the heat exchangers and made sure they were not leaking, replaced the muffler--and still the same thing. I ran a fuel injection cleaner through and drove it hard and that seemed to help, but didn't eliminate. Sounds like it could be as simple as a bad injector. How long will fuel injectors last?? I replaced them in 1996, but the car sat in storage for much of the time since then. I will also try the ECU recommendation.