not nessesarily...you need three different things to start a motor...air, fuel and spark...if you are missing any of these then it will not start...but the fuel is the easiest to see if it working by what i described above...spark is a little bit more difficult because you have to do a test on every single spark plug and make sure there is spark on every single one, and that they are firing in the right order....
because it still starts every now and then i would not suspect a fuel pump...because they either work or don't work....and you are probably getting air but it might be just something to check your air filter that it is clean... i am more so going along the lines of a spark problem...but to test that you can just remove one of the spark plugs but keep it on the plug wire and get someone to crank the motor, if it sparks then thats not the issue...then its something a lot more questionable
96 Jetta GLS-Sold (unfortunately)
Now have a 2009 Dodge ram 2500 (but thats not stopping me from being here...seeing as how i did own a VW for a while!)
-Only because i live in alberta and we are truck guys out here!
Stereo Setup Sold with Jetta- However install in truck is starting to get into motion.
-ALL JL AUDIO, 2-12W3 subs, 1500W TMA Monoblock, 400W TMA fourchannel, 2 Sets of components, with Double din touchscreen and GPS ALL CUSTOM