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Had oil lines swapped to the filter, that took some time and a bit of an oil mess to sort but there is now 20+psi cranking - check

fill the coolant...hmm..nothing going in....front down, back up and 3 gallons in the last 3 were a waiting game while the thicker Evan's stuff leaked passed the pump and t-stat I guess. - check

fuel pump on...silence. just a wire pulled off the fuse block while I was troubleshooting the tach issue. Pump on....fuel on floor. Looks like the fuel rail is leaking into the V somewhere so the intakes need to come back off and that is a 5-6 hour job if I don't need new o-rings.

Sadly, that will conclude testing for today.

Congrats! Getting to the point of finding leaks is fantastic progress!

Pulled the manifold off and didn't really see the smoking (or leaking) gun but o-rings didn't look great so I ordered all new, be here Wed. In the meantime I'll get everyt5hing cleaned up and ready to install and maybe have another look at the tach.

Ughhh, so close. Can't wait. So excited for you.

_________________
Wade Williams
Master Ferrari Tech
Restoration Tech
Engine Machinist
Fabricator
Racecar Driver

When I was cranking the engine to prime the oil pump I noticed I had like 10psi oil pressure and thought it fine....but then noticed I also has around 10psi fuel pressure with the fuel tank empty and pump off. Last night I discovered that the pressure transducers read just fine on the bench but when they are installed and the chassis grounded they have a 0 offset...270mV on the oil pres and 330-370mV on the fuel as it drifts around 30-40mV. These are 2 brands from Amazon, as typical chinese stuff they look the same other than the marking on the casing...both are junk it seems. I'll try 1 more where a couple reviews specifically mention no/low offset for fuel (don't care about the exact value for oil as long as its reading something so I know there is pressure and I can remove the offset in the ECU easily) before ordering a $200 Honeywell version cuz I do need to know fuel pres to calculate the correct mixture

The new fuel pres sensor is much better, 71mV offset and seems stable.  The oil pressure still reads 0 with the 270mV offset so it appears stable. 

The manifold o-rings came yesterday, I bought 3x8mm instead of the standard 3x14.5mm to make it a little easier to assemble and they seems fine.  Just waiting on UPS to bring the rail o-rings now.  The plan this time is make sure the injectors are seated in the rail then pop in the manifold end because the fuel needs to be sealed but  a small vacuum leak doesn't really matter so I want all the risk shifted to the manifold end as best I can.

Well...its almost sealed this time. It looks like a mist coming from 1 injector on the end. Hopefully 3's a charm.

It's really the injector o-rings? I would have been reluctant to tear down the assembly until I had identified the leak.

You do use a little engine oil on the o-ring to put those joints together, right?

I'm pretty certain what was leaking , I could see it. first assembly I used WD-40, second time silicone grease both worked well at getting the o-rings to pop into place nicely.

This is a challenging assembly. I didn't have room for 2 fuel rails or to assemble the rail to the TBs then drop the assembly into place so assembling relies on everything flexing enough to pop into place.


I'm now believing that I got the positioning of the rail mounts a little off and I'm torqueing the rail just enough to cause a leak. Tonight I'll cut and reweld the loop on the end so the rail bolts just as it sits naturally

I decided the rail wasn't sitting just right so I sawed the end off and repositioned it a bit....and then there was fuel pressure