ENGINE POPING WHEN STARTED

SOURCE: My BMW 328I airbag light is on and it does not shut off.

BMW's are renowned for having airbag light problems. Most of the time, there isn't even a problem with your airbags. Sometimes a sensor goes bad, sometimes it's a wire is loose, sometimes there's nothing wrong at all. It could be anything. But it is very unlikely that the airbags would not deploy in an accident, but of course the best way to know for sure is take it to a mechanic that can read the codes with a computer.

Harvey N Tawatao

• 3854 Answers
• Posted on May 11, 2009

SOURCE: Exhaust pipe rattles when car idles. Had muffler

Check the heat shield on the Catalytic Converter, after a few years they start to rust off and rattle. Crawl under the Pathfinder and bang along the Converter and muffler area and see where it's coming from.   Good chances are, it's from the heat shield since you already had everything changed from the Cat back.
Good luck and hope this helps.

SOURCE: I have a 1994 nissan

Given the ticking sound, you probably need to replace the timing chain assembly.

SOURCE: NISSAN MURANO 2004 I receive

the P0340 is a camshaft sensor code, the sensor is located in the front (passengers ) side of the engine, there should be two sensor's one for each camshaft, (front of each head) defective cam sensor's can cause the the problems of stalling and hard starting. I am a Nissan certified tech and replaced a good number of cam sensors in the past, they are quit easy to replace, they are attached by one ten millimeter headed bolt (per sensor) remove the bolt then work the sensor clockwise and counter clockwise while pulling out, there is a o ring seal on the sensor and when installing the new one lightly lube o ring before installing, then install sensor and be sure it fully seated against the mounting surface before installing the bolt or you will break the mounting ear of your new sensor. thanks for using fixya

SOURCE: 2000 vw beetle 1.8L, after

this sounds like valve stem seals. Pressure test the cooling system, to be sure. I presume that you would get the same smoke if you were to have a long decelerate and go back on the throttle....?

Coolant smoke is usually TONS of smoke, oil smoke less so, and the oil is somewhat bluer, but hard to tell if you have the Cat burning off some of the oil...