Hello All,

Well it's a clear cold morning here in Texas (That means it is between 35 to 45 F) and Inga ran like a top on the way into work. She is still having the stall problems when the outside air temperature is above 55F and her engine warms up.

I am going to replace every dang Vacuum hose. Does anyone have a list of hose lengths and diameters for a 86 Brick? Want to save mulitple trips to the auto parts store. I will most likely use the silicon hose like I have seen suggested on the BB.

Thanks in advance for your help.

When I replaced all of the vacuum lines on my 83 Turbo I bought 6' lengths of 1/4", 3/16", and 1/8", for a total of about $6. I had about 2 feet left of the 3/16" (I think) but as cheap as it was I figured better to have too much than spend $2 in gas having to go up and get more! It would make sense to use oil resistant line down to the flame trap but Turbos don't have one so I used all Gates vacuum line. I thought about silicone but the standard hoses lasted 20 years and I doubt I'll ever have to worry about it!

Justin B.
83 Turbo

The emissions test here in Harris County (Houston) requires that the pre-heat hose be connected. If your PH hose is hooked up and the thermostat inside the air box is shot, then you are feeding the AMM a constant diet of HEATED air, which can cause some if not all of your symptoms, and ultimately AMM failure.

Pull the PH hose off the exhaust manifold heat shield and see if there's any difference.

Another item is the large air hose from the AMM to the throttle body. Both my 244 B230F have developed a hole in the bottom side on one of the sticking-out corrugations. I was not able to find the hole but when I replaced the air hose, there it was - big enough to mess things up.

The smaller vacuum hose used in the PCV system is a special oil-resistant type, maybe others are, too.

Good Luck,

Bob

:>)

Well they have not found that break in the hose under the engine yet. Don't guess I am going to show them.

Going to check the hoses. Where did you get replacements?

Actually I like jbowser's approach. The only hose really subject to oil deterioration is the small one for the PVC system. It is easily accessable, and short. So, get a bunch of the sizes he mentions, and replace everything. If the little PVC hose fails, well 8 inches of new hose is under two bits at AutoZone, and multi-bux at a dealer.

BTW - a little drop of ATF, dripped off the P/S dipstick, in the hose end helps it to slip over whatever is connects on to.

Good Luck,

Bob

:>)