Just did the [famous] 'Top End Rebuild' 18 months ago - probably 750 miles since.

Almost zero leakdown at re-assembly for 10 minutes. Then lost a socket, had to break down rails in searching, sheared an O-Ring on RE-re-assembly, and had to fix THAT, and again, almost zero leakdown.

I had the TB off for oil catch can experiment, and thought I smelled some gas, so I did FP leakdown.

Not so good, BOTH times. Pretty strong gas smell with throttle body off, after tests. Hadn't run for 2 days too...

Just confirmed TWICE more; 4 - 5 second priming, return line pinched, no gas in FPR vac line, although THAT wouldn't matter not running.

(same results +/- 1PSI as last week 2 tests)

0:00 sec - 50, 50
0:15 - 47, 48
0:30 - 45, 45
0:45 - 43, 43
1:00 - 42, 42
1:15 - 41, 40
1:30 - 40, 40
1:45 - 38, 39
2:00 - 37, 37

...

10:00 - 20 PSI

Replace INJ's? Or not?

I been trying to sell her since November. Don't NEED to sell; just need shop space for work on my GMC.

Jon / FIC wants $700 for INJ's - not a big deal, but of course, you don't get that back when you sell. You MIGHT get a little more back if photo-doc'ed tho'...

Anyone else got NEW INJ's?

$700 for injectors?? Oh, wait, this is a ZR1.

Do this... pull out the injectors, put cardboard sheets under each bank, suspend in air a couple inches up and turn on the key. See which one is dribbling.

replace accordingly.

Already had this in mind here Andy, but am wondering ...

Will INJ's stay in place 'hanging' in the rails, with pressure, removed from motor?

Was trying to think of a way to do same, with rails/INJ/Inj Housing assembled, plenum out, somehow 'suspended' above heads, to observe guilty party[ies].

Still will probably replace all 16 tho'...

Quote:

on the lt1 and l98, there are little metal clips that hold them in place.

Not so on the LT5?

May want to send them out and have them tested

Yes there are clips Andy, now that I remember; I posted a tip even on it, on Z boards - don't remember what was up tho'...

Already talked to Jon / FIC about new ones; I did think of spray test, if I could figure it out myself here.

But they are originals - probably do need replacing, as much as I'm against replacing parts blindly....................

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