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Engine Specific Info and Questions => IDI Engine => Topic started by: rwdriver on July 03, 2008, 05:09:41 pm

Title: Banging noise?!
Post by: rwdriver on July 03, 2008, 05:09:41 pm
so I took my 1.6td jetta for a spin yesterday, and at wot, I ran out of fuel. I got some fuel in it, then start it up, and now there's a banging noise coming from the intake. It sounds like an exhaust leak, but it isn't.  It "bangs" once an rpm i think, so I don't think it's the valvetrain. It doesn't get louder when I rev it, it's the loudest at idle.  I really hope I didn't cook my engine. Has this happened to anyone else?  Thanks for the help in advance
Title: Banging noise?!
Post by: jtanguay on July 03, 2008, 11:28:56 pm
hmmm... does the engine vibrate bad at idle??? try cracking each injector one at a time to see if rpm's drop.  you'll know when you've found the culprit.

could be many other things too though.
Title: Banging noise?!
Post by: rwdriver on July 05, 2008, 06:11:31 am
I checked the cam timing, and it's dead on. The weird thing is that the car still runs like normal. the engine doesn't really vibrate much at idle.
Title: Banging noise?!
Post by: rwdriver on July 05, 2008, 06:13:09 am
any suggestions?
Title: Banging noise?!
Post by: burnt_servo on July 05, 2008, 06:34:52 am
Quote from: "rwdriver"
any suggestions?


you have a midget with a large hammer living under your hood ......

might be wise to evict him soon :D
Title: Banging noise?!
Post by: gigaz2 on July 05, 2008, 07:07:27 am
hipothetical: an injector dripping, stuck open or not atomising properly.
Title: Banging noise?!
Post by: rwdriver on July 05, 2008, 06:54:23 pm
that sounds possible, i'll try to find which one is bad
Title: Banging noise?!
Post by: gigaz2 on July 06, 2008, 02:27:52 am
damn my brain wasn't functioning properly..  if you ran out of fuel while at WOT, there is good chance there is air somewhere.
Title: Banging noise?!
Post by: rwdriver on July 06, 2008, 02:28:02 pm
air? like where? it still idles and drives fine