Money I'll never get back - new injectors.

(car will be listed F/S upon completion)

Timed Static Fuel Pressure leakdown video and breakdown startup...

https://www.youtube.com/watch?v=RAf6Itb0r2Q

Drain some coolant.

TB + some other hardware out of way.

A PUDDLE of gas atop #2 secondary intake.

Wicked out with a paper towel, and POOF!

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Glad you found the problem!

Leaker caught in the act:

https://www.youtube.com/watch?v=OBMmn50pwzU

The leak STOPPED at 1:09, not increased, when I re-primed the rails. Jon FIC said cause the INJ disk rotated to seal point (like it's ALWAYS supposed to be)

How do you embed vids here Matt?

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Inside [clean] work.

Pull ignition module. Wipe heat sink paste. Bag Ig Mod. Plenum to car wash.

Car wash jet wand to EVERY orifice / port in plenum. Safety glasses, and keep yer mouth SHUT!!!

And wash off plenum before carwash...

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Very interesting video. I was able to see the leak on the screen. What did you have to remove to get access for the camera lead?

As far as embedding - when you go to youtube, hit share, and then select the embed option and paste it in:

Had to yank plenum here Matt; INJ's are buried.

To the car wash.

No matter WHERE you stand, when you stick the wand in ONE hole, ANOTHER hole is pointed right in your mug. PTHAHHH...

Grease-free, and Shop-Vac all the holes. (local water like is Campbell's Soup - Chunky Style; drink it with a fork)

Ig Module cleaned and bagged; ready for new heat sink paste.

Shop-Vac loose debris. Pull INJ connectors, bag connector harnesses. INJ interfaces clean + di-electric grease.

And pull INJ clips!

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real neat seeing how that goes together

Separate the rails, prep for a gusher, rock gently (don't forget the line retainer), and removed.

Now, wait for some gas to evap, and Shop-Vac more debris.

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Just be careful of the o rings on that rail...ask me how I know

O-Rings. Pffttt... this thing ain't scared of an O-Ring (not wile already running anyway) - ask ME how I know THAT!!!

Funny story too - was doing FINE tuning on it 2 years ago, and I misunderstood steps on other Boards; "test something, running, then pull IAC, and observe again for difference".

(he didn't insert 'shutdown', between 'running,', and 'then pull IAC'.

I know motors, but didn't know much of LT-5, so I did it, and I observed - a couple things...

I observed the IAC O-Ring get sucked into the hole, along with a big RPM INcrease.

Only a whiff of burning rubber. Gone so fast, I couldn't get to the back of the car fast enough to find out which bank of cylinders won the fight.

Quote:

Shop-Vac loose debris.

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A DREMEL??? ARE I CRAZY???

Shop-Vac loose debris.

Nylon brush on Dremel; polish the INJ rail ports.

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Santa came!!!

Here we go...............

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Clean up INJ ports:

You can't see it from there; need to bring tools and start wrenchin' on other side of motor here

Quote:

Smoke? Burning rubber?

Ya' gotta' take the O-Ring OUT, before polishing it.

Couldn't see too well, and started the Nylon-Brush Dremel in #2. Smoke and the smell. No wonder I couldn't get 'in the groove'...

(NO - NO VIDEO LOL)

Rest done, now to the store for more Q-Tips, port swabdown.

Port wipedown, cont'd...

Pull tape back, Shop-Vac to ports.

LAST PIC Q-TIP IS AFTER FINAL GROOVE PASS!!!

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Some very careful work there. Who are the injectors from?

Got them from Jon @ FIC. Really helpful. In-depth chats long ago on CF (revenue generation stuff, with him and admins there). Jon remembers.

THen they locked me out for argument with a mod - think I've told that story a few times here.

more stuff:


"Careful work"? It's closer to obsessive Matt; been called that half a dozen times. Makes it easier to sell when the time comes tho'...

Quote:

note; #8 Primary INJ Harness Connector snaps onto INJ, retainer clip flares and snaps in both sides, but it is NOT locking on...

Leakdown test.

Cross your fingers. Cross your eyes, your teeth, your hair, toes; CROSS 'EM ALL....................

edit:
Primed to 51, compress air in lines, slow drop to 49 after a few minutes...

Quote:

Luck sent

STILL AT 45 POST 5 MINUTES (AIR DECOMPRESSING, PUMP CHECK VALVE HOLDING ??? )

!!!!!!!!!!!!!!!!!!!!!!!!!!!

EDIT:
8 MINUTES; STILL 44 PSI!

Rails re-primed; air in rails compressed, then DE-compressed, and STILL HOLDING 46 PSI POST :30 MINUTES.

VICTORY!!!!!!!

(videos uploading for rail / INJ assembly re-wind)

She's FOR SALE $1?,???

Re-wind on assembly...

More assembly (rewind):

Leakdown + 22 hours = 31 PSI; that's a GO.

Dry fit plenum good, Ig Mod emplacement good...

(and momma House Wrenn is waitin' for me to finish up, so that MY 5 little wrench-helpers won't get Shanghai'd into slave labor ( 2 days old, I think) )

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note 2; Primary MAP Sensor Mounting Bracket is binding upon twin PCV cap; shimmed ATM.......

edit:
addressed; in order.

note 3; for initial startup, I have installed another 'ticket stopper' gasket, between TB, and Air Horn.

I determined during top end rebuild 2 years ago, that the Secondary Port Throttle butterflies leaked, preventing the 'zero'd ' idle RPM's, and all other Closed Loop op parameters matching up with OEM spec.

A fabbed gasket compensated for this (I could see NO sunlight around the SPT butterflies; none-the-less, idle vacuum pulled air).

IAC correctly adjusted, but not fast enough to hold <75 RPM swing at CL idle.

The ticket stopper held CL idle <25 RPM swing.

After confirmation of zero'd idle, it's out for OEM gasket...

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Spool up; she is running like a top.

Vid on the way...

Congrats!

Thanks there Brian...