Hey guys, Whats this noise at startup?

[BadBowtie03]

Hey everyone.. Im having this little noisy problem or a very weird normal noise for hondas but i doubt that.. Ok this is the thing.. Whenever I first start the car up... it doesnt matter if its cold or hot.. The engine compartment makes a strange vibrating or growling noise and then it goes away.. Sometimes the nois is 2 seconds long or 7 seconds long it just depends... Is this normal? I wouldnt think so. Anyways if I could spell the noise out it would be ----> buuuuurrrrrrrrnnnn with a little vibration thrown in but nothing major.. Its not a metallic sound and it doesnt sound real serious... No check engine light and everything works perfectly.. Its really an innocent noise it seems but just wondering what it is and If i need to fix something... Thanks everyone.

Oh and by the way its a 94 accord EX manual

[TeriyakiBroccoli]

loose engine mounts causing some vibration? somewhere along the exhaust line vibrating?

[BadBowtie03]

Thanks forthe ideas but I really dont think that its something like that.. the reason i think that is because it has a distinct start and stop to the noise and it always sounds the same... For example I will start it up and it will idle for maybe 2 or 3 seconds max then it will start.... bbbbuuuuurrrrrnnnn.. for about 3 seconds and then it will stop and sound perfectly normal.. Its weird... the noise doesnt change tones... I dunno any other help is appreciated.

[ebpda9]

does the rpm go low ? does the car seem like it wanna stall ? it might be one of your injectors leaking. cure new injectors. i can hook you up with some honda injectors really cheap

[TeriyakiBroccoli]

how would a buuuuuuuuuuuuuuuuuuuuuurn sound be a problem with the injectors?

[BadBowtie03]

Huh..well Ive actually think that ive heard it maybe once or twice while the car is already running if that helps.. Its NOT a vibrating metallic noise like a metal zzzzziizzzzttzzzz sound. So let me see if i can think of something it sounds like.... It could kinda sound like a cell phone thats on vibrate mode thats sitting on a wood counter.. does that help?? IF you say the word "burnt" to your self but hold out the middle of the word like the "ur" sound... Its kinda like that, its also a low note not high pitched. It it will come on sounding it doesnt get louder or softer and then go off in an instant.. Oh and also I think that ive seen the revs move around a bit while its doing the sound and then go back up but nothing drastic.. For example it doesnt try to stall when its doing it... If injectors were the problem could higher flowing ones give it more power or no? Thanks hope that helps...

sounds like something is loose to me....maybe piping...i would jack ur car up and all fours and inspect ur exhuast starting from ur header, my first guess was ur valve springs but that "burnt" sounds doesn't sound like what my valves are making so i would guess soemthing is loose....just look around ur engine bay and see if there is something loose....make sure u do a close inspection....and have someone start up ur car while u stand over ur engine listening for the noise

[CD5Passion]

i think that is the problem I have, is it of a whirring kinda sound?

if so I have that too, but i can't figure out what it is

[BadBowtie03]

Hey guys ive found out that it was the ABS or Brake System in General. I added more fluid to the reservoir and now she is quiet, but Im still not completely confident untill I do a cold start and see if she does it then..