| Author |
Message |
Jeff Green (Carguy)
Member
Username: Carguy
Post Number: 289
Registered: 10-2002
| | Posted on Tuesday, May 20, 2003 - 6:44 pm: | |
Could it be that since the pump is not working that simply blow-by over time is resulting in a bit of oil in there? Was it just a few drops of oil? These engines don't seem to have much of a PVC system. Oh...I remember spinning my new pump over by hand and the hole near the shaft had just a bit of air blow out. So if the pump was working I don't think oil would go "against the wind" into the pump through that hole. If the owner doesn't want a new pump installed, just plug the old pump exit and put the hose back on for that correct look. In my simple opinion there won't be any ill effects. If the onwer is "fussy" about correctness a new pump from Bosch is about $350 to $400. |
Tom Bakowsky (Tbakowsky)
Member
Username: Tbakowsky
Post Number: 399
Registered: 9-2002
| | Posted on Tuesday, May 20, 2003 - 6:35 pm: | |
I'll be back in a bit..I need a beer, but please keep the ideas comming so I know what to tell this guy!! |
Tom Bakowsky (Tbakowsky)
Member
Username: Tbakowsky
Post Number: 398
Registered: 9-2002
| | Posted on Tuesday, May 20, 2003 - 6:33 pm: | |
One other thing I did notice, was when I pulled the vac hose off the pump, oil dripped out of the vac hose. I figure this can't be good for anything in the vac system of the car. I figure the hole in the pump by the shaft is for lubrication of the pump. Now if the seals internal to the pump leak, then oil can get into the vac system of the car, and then back to the engine causing an oil burning problem. Should I just leave the thing the way it is, or should I tell the guy he needs a new one? |
Jeff Green (Carguy)
Member
Username: Carguy
Post Number: 287
Registered: 10-2002
| | Posted on Tuesday, May 20, 2003 - 6:21 pm: | |
You are correct Tom as I understand it, the pump is supposed to aid the brake system. You may recall my TR had the same problem, but had a Delco electric vacuum pump plumbed into the system. The odd thing was that the electric pump was not hooked to a power source so it was just along for the ride. I experienced no ill effects. I yanked out the electric pump, bought a new proper Ferrari pump (expensive!), and installed it. I can't tell the difference at all. On this same subject, since the pump created vacuum it must also create exhaust. And this exhaust (positive air pressure) seems to exit through a hole near the pump shaft and into the engine. So does the pump help force out blow-by gases in the motor? Anyone else have information on these buggers? |
Tom Bakowsky (Tbakowsky)
Member
Username: Tbakowsky
Post Number: 397
Registered: 9-2002
| | Posted on Tuesday, May 20, 2003 - 5:57 pm: | |
The vacuum pump on the left rear cylinder head. What excatly is it's function? I realize that it produces vac for somthing. Is it an amplifier for the brake booster? I was just wondering because a Testarossa came into the shop for camcover gasket replacement, and when I pulled the vac pump off, the splined shaft were it keys into the cam was missing. Obviously broken in the past. The owner of the car has experianced no ill affects or hasn't noticed any. I was just wondering what it operates maybe extra vac for the HVAC system? |