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  • 1965 - 1973 Classic Mustangs -General/Talk-
  • Classic Mustang Specific Tech

Oil pump shaft position

  • Thread starter Thread starter LXS
  • Start date Start date Jul 7, 2009

LXS

New Member
Feb 10, 2008
4
0
0
East Los Angeles
Jul 7, 2009
#1
  • Jul 7, 2009
  • #1
This is for my brother's '66 289 Mustang

Ok, is there a specific way that the oil pump shaft should be sitting? For example, on Chevy motors (sorry lol ), the oil pump shaft needs to sit a certain way (I use a small crowbar, and use the curved lug nut "socket" end as my guide/pointer and turn the shaft until it points to #5 I/E valves), so that when you drop the distributor in (and #1 piston is at TDC), the rotor will point straight down the middle and the ol pump/distributor timing will be set.

Is there anything like this for Ford? Or do you just install the oil pump shaft, drop the distributor, and that's it?

Now for the "background" story haha...

The original distributor has the points/condenser set up on it. Well the plate the the points set up bolts down to is very loose! I had a spare Ford distributor sitting around that was a little old and dirty, but the plate was in better condition then the original's, so I installed it.

I lined the original one up, made sure I marked the placement of it and dropped the spare one in. Everything seemed well, but for some reason the car ran pretty rough and began to sputter and miss on take off. I checked and double checked the timing and points gap, and all seemed well. I ended up decideing to pull the distributor and found that it was stuck! After a good tugging the distributor poppd out and brought the shaft out with it! I eventually dropped the shaft down into the pan and towed the car home! Hahaha Alls well tho, I dropped the pan, pulled the oil pump and installed it correctly, and this time with the retainer clip and a one piece oil pan gasket it!

I inspected the distributor and found that there was a pretty ugly gash on the distributor gear and figured that was the reason the car didn't want to run right. My brother ended up buying a brand new replacement distributor from Auto Zone, but that miss/sputter is still there!?

What do you guys think is the cause of this? Is it possible that like Chevy, the oil pump timing is off? Is it possible that the spare distributor with the gashed gear scored the cam gear which is now allowing the timing to jump around advancing and retarding when in use? Also, this car was sooo stock that it still had the bone stock original smog set up on it (it's an original Cali car)! Well when the motor is revved up, it makes this really odd noise, kinda like a "snorkeling" noise. If I have time, I'll try to video it and post it up in a few days or so.....that is if anyone would like to hear what I'm talking about.
 
2

2+2GT

10 Year Member
Apr 25, 2009
3,333
10
79
Southeastern Pennsylvania
Jul 7, 2009
#2
  • Jul 7, 2009
  • #2
The distributor merely drives the pump, with a hexagonal shaft, there is no "timing" as such. Lack of oil drive would not cause a "miss", but would result in catastrophic destruction of the engine through lack of oil.

There is supposed to be a captive push-nut on the shaft to prevent it from coming off the pump.
 
D

D.Hearne

New Member
Sep 29, 2000
11,730
6
0
south louisiana
Jul 7, 2009
#3
  • Jul 7, 2009
  • #3
You've got a vacuum leak somewhere. Try running it again, but get a can of spray carb cleaner and spray all around the intake and smog system to test for leaks. When the carb cleaner hits the leak, you'll know it. I'd also ditch the points as well and replace em with a Pertronix unit.
 

LXS

New Member
Feb 10, 2008
4
0
0
East Los Angeles
Jul 9, 2009
#4
  • Jul 9, 2009
  • #4
Thanks for the replies!

I'm familiar with the vacuum carb cleaner trick, but don't believe there is one. It was running perfectly fine, and revving fine, prior to the distributor mishap, but I'll give it a shot anyway
 
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