This is topic what the hell is it !!! in forum Tech Talk at Northern California Ford Owners  .


To visit this topic, use this URL:
https://californiafords.com/cgi-bin/ultimatebb.cgi?ubb=get_topic;f=6;t=003874

---

Posted by 1997Snake (Member # 2755) on :
 
How do you know when the timing is off. My cars exhaust seems to sound differently recently. When I am driving I get up to about five thousand in second, and when i let off the gas the xhaust makes real loud poppping noises, like its backfiring a bunch. Before it use to sound sweet as i let off the gas, real loud but smooth as it went down. Any ideas guys about this problem.Only has a bassani x-haust. Thanks for any insight.
 

---

Posted by Black94 5.0 (Member # 655) on :
 
Check for exhaust leaks, but it sound as if your timming is too advanced...

I take it you have a 97 Cobra/4.6 Modular motor..Do you have a timming adjuster?....If you do not have a timing adjuster and the only modification you have done is the X pipe then I would definately check for exhaust leaks...

Sometimes a diverter valve in your smog pump lines will leak and let air get into your exhaust and cause the popping sound also...
 

---

Posted by stangin' (Member # 514) on :
 
if its an off road x-pipe then the popping is normal when you let off at high rpms. my cobra does the samething with the dr. gas x-pipe.
 

---

Posted by 1997Snake (Member # 2755) on :
 
Thanks for the replies. No it doesnt have an x-pipe, just the bassani x-haust mufflers.
 

---

Fueled by Ford Mustang Owners
on CaliforniaFords.com