about 1800 to 2000 rpms a high pitched wistle on acceleration and deacceleration sounds like a vacuum leak huh **)
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about 1800 to 2000 rpms a high pitched wistle on acceleration and deacceleration sounds like a vacuum leak huh **)
Yep vacuum. look at the vac for the booster.
everything seems to be tight every were i look how can i tell with a gauge
if its doing it at WOT then its not vac. because you dont have any. a vac. leak should be worse idling. that could be anything, need to tell us a little more. take the fan belts off and see if it stops.:HMMM:Quote:
Originally posted by lildebbie1111
about 1800 to 2000 rpms a high pitched wistle on acceleration and deacceleration sounds like a vacuum leak huh **)
since when is 1800 to 2000 rpms wot? read my previous post ... its not the belts sounds like wind wistling but higher pitched
everytime you move you foot the vac. goes to 0. whether its 1000 or 2000 rpms. but sense youre such a smart ass you fix it. :mad:Quote:
Originally posted by lildebbie1111
since when is 1800 to 2000 rpms wot? read my previous post ... its not the belts sounds like wind wistling but higher pitched
IM NOT MOVING MY FOOT IM HOLDING IT STEADY the only time i can here it is from inside the car
Give me a break. :rolleyes:Quote:
Originally posted by lt1s10
everytime you move you foot the vac. goes to 0. whether its 1000 or 2000 rpms.
lildebbie, what kind of induction system?
about 1800 to 2000 rpms a high pitched wistle on acceleration and deacceleration sounds like a vacuum leak huhQuote:
Originally posted by lildebbie1111
IM NOT MOVING MY FOOT IM HOLDING IT STEADY the only time i can here it is from inside the car
if you dont know what you posted i sure the hell dont.
acceleration and deacceleration if you did what you said you did then the vac. would have changed enough so the noise would have changed with it.
http://www.clubhotrod.com/forums/sho...threadid=13014
Would I be correct in assuming it's the 650 double pumper posted here?
sorry....its carburated performer rpm intake 650 double pump holly
would a vacume gauge help me? how would i be able to tell
Most whistling of the type you describe are due to baseplate to main body gasket/alignment issues.
Comfortable taking it apart?
Only inside... hmmmm..
You have never said what the vehicle is... But if it's a later model all the heating and airconditioning controls under the dash are vacuum controls. Any one of a dozen things could be leaking under there and at the rpms you're talking about that's about the max vacuum. Stick your head under the dash and see if its louder.
Good disclaimer, Denny, or he might end up like the guy with the Winnebago. :DQuote:
Originally posted by DennyW
Or, if you have a portable vac pump, hook that to the main vac going inside the vehicle, and listen. Then, hook it to the brake booster, and listen. This way you won't need the engine running, and you can eliminate the inside sources as the cause. Oh, and if you stick your head under the dash, make sure your not driving, :LOL:
he he heh. :LOL: He didn't specify whether this was in motion or not did he? :3dSMILE: He did say he could only hear it inside.... Outside at 50MPH it would be hard to hear anything.