TOP END REFINISHING

[Z06scentair]

Shrade great job.....I'm near Charlotte Nc and planning on pulling the plenum on my car to fix a vacuum, oil, and antifreeze leak! Care to join

[Bearly Flying]

Schrade; Started out fixing the starter solenoid contacts, ($3.00 item)

But then, already got the Plenum and IH off, might as well get them ported..

The finish on the Plenum was showing its age, So Powder Coat looks good..

The injectors were still the stock injectors, so might as well while I'm there..

Started reading about the secondary throttle system... Hmmm good time as any....

Well I guess I have to reprogram to delete the secondaries, OK new chip with all the goodies..

Stainless bolts would look good on the new Powder Coat...

Thanks go to Lgaff and Jerry's Gaskets for their Great service and assistance.

Then Work got in the way, (I work away from home for about a month at a time)

So what started as a $3.00 repair in June, cost a bit more than expected and took a bit longer to accomplish.

But hearing it fire up tonite was worth it..

[Paul Workman]

Originally Posted by Bearly Flying

Schrade; Started out fixing the starter solenoid contacts, ($3.00 item)

But then, already got the Plenum and IH off, might as well get them ported..

The finish on the Plenum was showing its age, So Powder Coat looks good..

The injectors were still the stock injectors, so might as well while I'm there..

Started reading about the secondary throttle system... Hmmm good time as any....

Well I guess I have to reprogram to delete the secondaries, OK new chip with all the goodies..

Stainless bolts would look good on the new Powder Coat...

Thanks go to Lgaff and Jerry's Gaskets for their Great service and assistance.

Then Work got in the way, (I work away from home for about a month at a time)

So what started as a $3.00 repair in June, cost a bit more than expected and took a bit longer to accomplish.

But hearing it fire up tonite was worth it..

Yeah, but just wait till you whack that throttle...THEN just try to wipe that silly grin off your face!!

Do let us know how your thoughts on how it responds with the secondary delete "option". (Assuming the snow isn't hip deep to a tall giraffe!)

P.

[Dynomite]

Great job....and nice, clear, detailed large photos

I am referencing several posts in -Solutions- if for no other reason (but there are many reasons)...the clarity of the photos.

Will be interesting how the paint scheme looks once put back together

[Schrade]

ed.: Cliff; Franke, you posted while I was looking at posted snappics, and Photo-Chopping BELOW... thanks.........................
//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

Originally Posted by Dynomite

Great job....and nice, clear, detailed large photos

I am referencing several posts in -Solutions- if for no other reason (but there are many reasons)...the clarity of the photos.

Will be interesting how the paint scheme looks once put back together

Amazing thing; the cam still works after catchin' my mug in the lens!!!

Anyway, I found a snappic showing TPS harness in front of #1 1' INJ.

And I have a few vac tube routing / location errors here (at least)







And THIS is NOT how to put together your Z. Some others of ya' there must be ROFL'ing...



If this mill doesn't detonate when I pull the trigger, I'll be surprised...

[Schrade]

OK - I got the 'tie' part, but which one in the Red circle over / under???

http://www.zr1.net/forum/attachment....1&d=1381717981
http://www.zr1.net/forum/attachment....1&d=1381719014

[Schrade]

Fuel pump test...

Pulling FP #2 fuse will isolate for pump #1 pressure...

BUT,

can I pull FP fuse #1, plug in FP #2 fuse, and isolate pump 2 pressure???

[Schrade]

Voltage check.

Charging terminals in battery (with hose @ hand )



jumper



didn't budge for 5 seconds, no noise, nothing - then, 5 seconds later, a light click, and

[Schrade]

Un-plug, and it started to fall. Post 3 minutes, it was under 20 PSI.

No fuel anywhere. Stuck my schnazz in the valley, in the rail connectors, no fuel smell.



The lines were DRY - un-plugged both ends for 2 weeks. ALL air.

[Schrade]

It went to 0 post 15 minutes.

Second test pump #1; went to 52 again much quicker, and heard the pump.

10 seconds; power off. Drop rate much slower - post 3 minutes, it's steady at 24.

15 minutes post power down; still @ 20.

Test 3rd time shortly with stopwatch.....................

"""""""""""""""""""""""""""""""""""""""""""""""""" """"""""""""""""""""""""""""""""""""""

Test 3:
Power off
0:15 - 44
0:30 - 40
0:45 - 39
1:00 - 37
2:00 - 34
5:00 - 28

Getting better each time.

Q: Where does the air go, that was in the line???

Does it get pushed to the tank? Does any remain in the INJ's, or rails, until it's run??????????????

++++++++++++++++++++++++++++++++++++++++++++++++++ ++++++++++++++++

Should I test until I get no leakdown?

Or go ahead and test with both pumps?

OR,

Test pump 2 isolated?


Test 4; identical readings.
&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&

So I held the guage pressure relief, and bled air, till it ran no air.

5th test; identical readings @ 15, 30, and 45.

If the primary pump has a check valve integrated (and it's blown), then another test WITH pump 2 + pump 1 should yield identical results, with the [blown] primary check valve still leaking.

I had good static pressure before this plenum pull

So now, if pump 2 can be tested in isolation, I can find out if pump 1 has a bad check valve.

Hopefully, it does NOT, and one of the injectors is leaking PROBABLY because a pintle is jammed open. Pulling each spark plug and checking for fuel should confirm this.

Thoughts????????????????????

Hello?