Massive oil leak, only when running

[econti]

I've got an oil leak that only appears when the car is running. It's from the front (I think, hard to tell), and drops quite a decent amount.
I'm in the middle of doing the head gasket at the moment, and so head is off, is there anything that springs to mind that I should check at the moment?

 

[sheedy126]

oil pan gasket, front main seal? loose fitting on one of your oil cooler lines possible

 

[suprasick]

Also make sure you don't forget to add fipg on the headgasket surface by the timing cover. If you do forget, its just a matter of time before it leaks.

 

[econti]

oil pan gasket, front main seal? loose fitting on one of your oil cooler lines possible

Will check all three now. Anywhere else that's a standard place for it to leak?

Also make sure you don't forget to add fipg on the headgasket surface by the timing cover. If you do forget, its just a matter of time before it leaks.

Are they the two bits right on the front? I'm following a guide, has it in that so I shouldn't forget :icon_bigg

 

[sheedy126]

generally you can follow a leak right up to where its coming from since there will be fresh shiny oil coming right from the leaking point, then dirty oil pretty much all around it.
but since you have your head off it will be kind of hard to tell

 

[hvyman]

Change the rear timing cover seals while the head is off.

 

[755hp]

Check the front main seal and cam seals. I have the same issue 7mgte; I just ordered both the front main and cam seals from Driftmotion on Friday.

 

[3p141592654]

Replace all 4 seals on the front. Also put a dab of FIPG on the crank snout where the timing belt pulley sits so it doesn't leak through the center of the pulley. Replace CPS o-ring and check that no oil is leaking internally through the CPS oil-seal. Finally, pay attention to the FIPG points when you reassemble the head.

http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=EM&P=52
http://www.cygnusx1.net/Supra/Library/TSRM/MK3/manual.aspx?S=EM&P=55