RE: IML: Engine problems - leaky servo

[RandalPark@xxxxxxx]

This will make a hiss that you can listen for from inside the car. Vacuum leaks under the hood are not as easy to find.

Paul W.

In an email dated 17/9/2005 4:48:24 pm GMT Daylight time, "Brooks Harkey" <vm.dude@xxxxxxxxxxx> writes:

>One OTHER thing that happens which I forgot to mention: ?on a '64, when you
>put it in gear, the vacuum servo also activates which releases the emergency
>brake.
>
>Is that servo leaking? ?Or how about the switch that diverts vacuum to the
>servo when you press a different button other than "N"? ?Any problems with
>either of those, and there ya go. ?It's up under the dashboard - you can
>find it if you lie upside down in the floor.
>
>--Brooks in Dallas
>
>
>-----Original Message-----
>From: mailing-list-owner@xxxxxxxxxxxxxxxx
>[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of Brooks Harkey
>Sent: Saturday, September 17, 2005 10:38 AM
>To: mailing-list@xxxxxxxxxxxxxxxx
>Subject: RE: IML: Engine problems
>
>I think you have "outted" the suspect and don't realize it.
>
>What everyone else said on vacuum leaks applies, but the big hint (I think)
>here is that you say when you put it in gear, it begins to idle roughly.
>The *other* thing that probably happens when you put it in gear is that you
>put your foot on the brake -- and if there is a bad seal or a leak in the
>power brake booster, maybe it doesn't leak when the brake is *not* pressed,
>but begins to leak vacuum when you press on the brake pedal -- hence, the
>bad idle shows up when you put it in gear.
>
>Check that out.... disconnect the brake booster and plug the line. ?THEN see
>how it idles in gear. ?If it's now fine -- VOILA!
>
>WARNING: ?It'll be a LOT harder to hold the car from moving when that's
>disconnected, so don't drive the thing thru any walls or over somebody.
>
>--Brooks in Dallas
>PS: ?I'd love to know if this ends up being the culprit! ?I like it when I
>diagnose a car from hundreds of miles away. ?(:-D)
>
>
>-----Original Message-----
>From: mailing-list-owner@xxxxxxxxxxxxxxxx
>[mailto:mailing-list-owner@xxxxxxxxxxxxxxxx] On Behalf Of JAY D'ANGELO
>Sent: Saturday, September 17, 2005 12:46 AM
>To: mailing-list@xxxxxxxxxxxxxxxx
>Subject: IML: Engine problems
>
>Just put a brand new long block 413 in my 64 Imp Convt., but it doesn't idle
>
>properly and is very sluggish off the line. ?We did a new PS unit, water
>pump, radiator, master brake cylinder, coil, points, condenser, cap, wires,
>plugs and an Edelbrock 1406.
>
>We set the plug gap at 35, points at 16 and the dwell dropped to 21. ?I
>hooked up the vacuum advance hose to the driver side port on the carb and
>wired the electric choke thru the whatumacacallit on the firewall.
>
>we set the timing to 10 and got it to idle smooth, then it would get rough
>in gear, like it had a vacuum leak. ?Then we were able to get it falrly
>smooth by readjusting the distributor and it roared in park. ?In gear, it's
>smooth but slow off the line and pings.
>
>My mechanic is tearing his hair out and I'm not too happy, either.
>
>Any suggestions on this one?
>
>Jay
>
>
>
>
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