Instructions to diagnose an oil leak on the IUPUI Motorsports Engineering MGB race car.

1. Starting Sequence for Oil Pressure Diagnostic
Summer 2014
(Note: (For shutoff procedure.) Make sure Accusump is closed and that kill switches are left on
until radiator fan shuts down. It should take just a few minutes.)
(Note: If Accusump was left on, make sure it’s closed before starting.)
(Note: If driver’s side master switch is left on, the 3 to 5 Amp current draw will quickly drain the
battery. Passenger side will not, if left on.)
Procedure:
1. Turn on both master switches.
2. Make sure Accusump is closed.
3. Flip on ignition switch.
4. Flip on fuel switch.
5. Start engine.
6. Check to see if oil pressure is >50psi.
7. Make sure voltage is >12V.
(Note: Keep RPM’s below 1500 until water temperature reaches 165F)
8. Once oil pressure is at an appropriate level, Accusump can be opened.
(Note: It’s recommended that it’s kept closed until on track.)
(Note: Accusump was opened during this diagnostic test.)
9. Turn engine off after noting that the appropriate oil levels are attained.
10. Restart engine using same procedure.
11. Check timing at 2000RPM.
12. Check for oil leaks at the bottom of the engine and the sides of the block while keeping
engine at 2000RPM for 20minutes.
(Note: To hold engine at desired RPM, set the idle to 2000RPM.)
(Note: In preparation for starting and prior to engine firing, Accusump was opened to pressurize
the oil and push it throughout the engine.)
Post Diagnostic Observations:
 Oil leak – front of engine (possibly oil pan)
 Oil leak (possibly rear main)
 Oil leak (pressure relief valve)
 Water temp = 210F - with shop fan blowing (3/4” restrictor in the thermostat)
 Oil temp = 150 +/- 15

2.  Carb Needle at #1
 Carb piston springs are blue 1oz.
(Note: Oil filter # is Napa Gold 1391 ONLY. Other filters will cause oil pressure problems.)
After Shutdown:
(Note: 15degrees advanced timing changed to 30degrees.)
(Note: Set hot valve lash to 0.0018)