ricks993

Just finished rebuild and before starting is there any way to pre-pressurize the oil system.
Also how do I pressurize the fuel system?

axl911

This is what I do for both my rebuilds.

- Turn engine over by hand couple of rotations....just to be sure there is no hangup.
- Remove the DME relay, crank the engine to build oil pressure. It will take a little bit, but you can stop when you see the oil pressure gauge begin moving. I normally see about 1 bar.
- Now would be a good time look around the engine bay and under the car to see if there is any obvious leak.
- Jumper the fuel pump at the DME relay to build fuel pressure.
- Again, check the engine bay and under the car for fuel leak.

- Finally, put back the DME relay and crank to start the car. If everything is correct, the engine should roar to life!

ricks993

What terminals do I jumper on the DME plug

bcameron59

Per shop manual:

Pull DME relay (R53) off the Central Electrical
System and use a fuse-protected shopmade
jump lead to connect pin 30 to pin 87 b
(identifications 3 and 7 on Central Electrical
System). The fuel pump should now operate.

ricks993

thanks Brian & AX911 for the help

Cactus

Take plenty of video!

knorrena

In these instances I always have a fire extinguisher handy. I have not had to use one, but maybe thats because one was available.

Kein_Ersatz

Best of luck, take it slow, many sets of eyes around engine bay a good thing!

Let us know how it goes

bcameron59

Very good idea. During my break-in run my C4 developed a nasty oil leak from the flange holding the oil pressure & temp gauges. Some drips made their way into the heat duct opening on top of the heat exchanger and - POOF !

Quick shot with the extinguisher and the fire was out. Cleanup was another matter however... as if the oil leak wasn't bad enough. If you have a halon or other clean extinguisher suggest you have that on hand instead of dry chemical.

bcameron59

Probably too late to mention this but you might want to do your startup and run in before you button everything up, ie don't connect the axles and anything else not essential to running the motor. Will save a lot of time should it be necessary to drop the motor to desl with any issues that might arise during run-in. Like a major oil leak, for instance.