|
| Search | Car Forums | Gallery | Articles | Helper | Air Dried Beef Dog Food | IgorSushko.com | Corporate |
|
|||||||
 |
 Show Printable Version | 
Subscribe to this Thread
|
|
|
Thread Tools |
|
#1
10-05-2006, 05:27 PM
|
|||
|
|||
|
Howling intake noise after new intake and TBI
So irecently put a new voodoo cam, performer TBI intake and holley TBI in my truck. Now i hear what sounds like a belt squeeling (but its not) after i release the accelerator. Example....give it gas, let off pedal and then there is a squeeling sound as the engine idles down and the sound stops as it hits normal idle....Is this normal? sounds kinda like a turbo its kinda cool actually....
|
|
#2
10-05-2006, 05:41 PM
|
|||
|
|||
|
Re: Howling intake noise after new intake and TBI
Sounds like a vacuum leak at the TBI base gasket, or maifold to head. Is basicly the reverse of a boost leak. Vacuum is highest on decell. The noise is not normal and if your engine is idleing rough the leak is probably having more effect than the cam.
|
|
#3
10-05-2006, 07:05 PM
|
||||
|
||||
|
Re: Howling intake noise after new intake and TBI
I agree might need to check those gaskets good. I know it is messy but some oil is one way to find a vacuum leak.
__________________
 '99 Blazer LT Loaded, K&N Filter, Pioneer Super Tuner,Viper '98 Pontiac Grand Prix GT, 3.8 '88 K1500 Cheyenne, 5.0, stock, bought new '86 Nissan 720 Trash Truck '69 C/10 step side, 307, all original, second owner, in process of restore. The person who says it cannot be done should not interrurt the person doing it. Share your knowledge. It is a way to achieve immortality. Allen- Paintman Wrenchtwister Broompusher
|
|
#4
10-05-2006, 08:56 PM
|
|||
|
|||
|
Re: Howling intake noise after new intake and TBI
If you open the hood and remove the air cleaner, can you tell if the noise is coming from the TBI?
The reason I ask, is that I also have the performer TBI intake (on my 90 GMC K1500 5.7) and I had some issues with the power brake vacuum hose routing. When you let off the gas, the vacuum will be higher and your vacuum hose to the brake booster may be leaking. //2000CAYukon
|
|
#5
10-05-2006, 10:33 PM
|
|||
|
|||
|
Re: Howling intake noise after new intake and TBI
We removed the bracket that the brake booster line was connected with so it would hook up to the performer intake. It sounds like it is coming straight in from the air cleaner.......
So to check gaskets i rub some oil along where the manifold gaskets are and look for bubbles?
|
|
#6
10-06-2006, 01:44 AM
|
|||
|
|||
|
Re: Howling intake noise after new intake and TBI
turn truck on. get starter fluid in a spray can (duh). spray until the idle changes O.o always worked for me. where you spray the starter fluid is where the engine is sucking. (duh again). hope this is some sort of help.
|
|
|
POST REPLY TO THIS THREAD |
 |
|
|
