Help - Tapping Sound

Okay i have my car just idle and hear what sound maybe like a man tapping a eraser on a desk , inside the vehicle but outside cant hear it no more. when i take off or drive i dont hear it no more but when im at a red light i hear it if i put it in nuetral it frees up the noise

Without seeing it firsthand, sounds like it could be an exhaust leak from the downpipe gasket. Also check the condition of the engine/transmission mounts.

I think you are saying that the noise is only present in Drive, at a stop. What about Reverse?

i got a L32 its a 4t60e trans tho i was going to go all the way GTP with it but the guys i had put it in didnt know what to do in that fashion but long as its in gear i hear and feel that tap like the engine is rocking back and fourth

the Engine is about at 96 maybe 98k on it the the trans is 132k its not as sound as a stock motor should be for a fully stock motor with only wires n msd coil packs

This is a longshot but you might want to check motor/trans mounts and harmonic balancer.

Worn motor mounts or loose exhaust system or both maybe?

Get your ear on it to hear exactly where it is coming from. I always use a broom stick to set on the motor in different areas to hear. My motor is being rebuilt in about a month or so due to a slight wrist knock. I was hearing it in the car and when I was stopped and stuck my head below the car to listen to the bottom of the motor. Only audible when car is in drive with the brake on. Goes away if put in neutral or take off. It sounded at first like an exhaust leak but further investigation proved otherwise. I have 178k so it's time anyway for a refresh! If you find this is your problem, best thing to do is drive gently and slip into neutral at stop lights, easing the load on the motor.

But i just put this motor in and its not like it used to sound its not quiet like my old motor i too many noises since i kinda know what mines used too sound like and its sounds like like a mount is broken gas is leaking from around the injectors man i just need a 3800 professional take a look at my guts cause i shouldnt be havent this many problems stock

Do you think it might be a problem that you have not yet followed up on the advice you did get?

Well what should i be looking out for when removing the fuel rails cause mine are leaking and car is failing to start with flick of the key and seeing alot of gas around the nozzles of 3 of them

First, unplug the electrical connections at the 6 injectors by squeezing the metal clip inward. You will need to remove a few bolts that hold down the fuel rail and then gently pull the injectors out of their ports, leaving them attached to the fuel rail.. You should be able to leave the fuel hose connected and just lift the rail up for access to the seals.. Then replace all rubber o rings. A light coating of vasoline will help before installing them back in the car.

Please chime in if there is anything I forgot as I'm writing this from memory. Not a difficult job if you take your time. Good luck to you. Dave

So what's the Vaseline is for again I just been soaking up this valuable info it's been helpful cause these 3.8 are very sensetive

And I have been looking for new head lights and this dog none engine mount for some time now any ideas by the way?

The vasoline will help the o rings slide into their ports without tearing them. I believe it will also help them to seal.

Thanks man in advanced if this works out for me

Just tackle one thing at a time. Leaking injectors is a serious safety issue and should be addressed immediately. Also a very inexpensive repair and the car should also run better after this.

Which mount are you looking for? The front and left side mounts are repairable and write ups are on this sight to do them. The rear transmission mount is readily available at any parts store.

Headlamps are not available new or aftermarket, but are easy enough to find used at many junk yards. If you have a pick n pull in your area, you can usually check their websites for cars in their inventory. Headlamps are the same from 95-99, Riviera only.

It probably would save me sum gas too my car is getting old im trying to keept it alive so i can get antique tags