Question for car geeks and mechanically minded...

[NYMountaineer]

So I'm trying to add a Sunpro water/oil/battery gauge cluster onto my 1990 Caddy Fleetwood. She's got a 4-barrel Olds 307Y, and I'm stuck with the water gauge sensor. See, there's a long cable runs off the gauge, through the firewall, into the socket for the sensor on the manifold that works the coolant idiot light, and while the nut for the gauge sensor screws in okay, it doesn't make a tight seal because of the narrow diameter of the sensor cable itself and water leaks out, so I've been unable to install it. I'll see if I could get some pictures to illustrate what I'm talking about...

I was wondering if anyone else has had experience dealing with a 307 in this way, or has any suggestions in general? Someone mentioned a certain type of sealing tape to me once, but I can't remember the specifics.

Thanks for any advice you can give me.

[Tobin S.]

1. Teflon tape? I'm no mechanic, but I'll throw that out there.

It's the kind of tape you use to seal plumbing connections. I've also used it to seal air lines on a semi.

[BlueCollar]

2. Based upon this description of a Sunpro cluster

"...This triple gauge kit gives high performance with a great racing look. The kit includes a mechanical oil/water temperature gauge, an electrical voltmeter, and a mechanical oil pressure gauge. It comes with a 2-in black face dial with white numbers and a red pointer that adds style and readability to its look. It has 12-volt internal lighting and is designed for negative ground systems. It includes 72-in capillary tubing with 5/8-in national pipe thread and 1/4-in, 3/8-in, and 1/2-in adaptors. It includes lighting, mounting hardware, and 72-in nylon tubing with 1/8-in and 1/4-in national pipe thread fittings. It requires a hook-up wire for the voltmeter...."

it seems to me that your local hardware store should be able to provide you with the right adapters with a reduced-sized collar to accomodate the tube?

my $.02