3800 series II swap, please read :)

[CSH-HQ]

SD way is very good.
At one time there was a kit that used like a 555,injector driver, and fuel 
rail pressure guage.
Discinnect all injectors, and pressure rail.  Pulse each injecot with 555
devise, (use really small on time).  All injectors should drop rail pressure 
about the same amount, ie 5 PSI.  90+% any injector sticking at turn on or 
off will show.  AS USUAL BE CAREFUL WHEN WORKING WITH EFI FUEL


>Kevin Margitta wrote:
>> 
>
>> Well, I've physically looked at the injectors on the rail but out of the
>> engine .... and after 30 - 60 mins.. the little clyinders at the tips of the
>> injectors are completely filled.. so perhaps it is more than 5 - 10 drops?
>> Also , I did look at the book of his that said that 1 drop per minute is
>> allowed... however.. I completely agree with you in that they shouldn't leak
>> at all.. (one of them is dry as a bone ... it's 5 that are leaking.. two are
>> bad, three not so great)
>> 
>> Cheers ,
>> 
>> Kevin
>>From a service standpoint, I would change the injectors.  Sorry you
>have to hear it, but your complaint fits into the typical "oh yeah,
>you've got leaking injectors" category.  Try pressing the throttle to
>about 1/2 - 3/4 when it would normally require extended cranking and
>see if it starts quicker.
>
>Here's the shop procedure.  Complaint recieved: hard start hot,
>extended crank time, puff of black smoke and sometimes fuel smell.
>(sound familiar?)  Run vehicle until warm, shut off, allow to sit for
>1/2 hr or so.  Crank to confirm extended crank time, then press
>throttle halfway and crank again.  Usually starts right up.  This
>problem seems to be so common, that the next step is to pull the rails
>and injectors and look at not how much the injectors are leaking, but
>if they're leaking and which ones.  Sometimes only takes turning the
>key on to power the pump, and they start leaking.  Cardboard
>underneath them allows you to see which ones are bad without standing
>by and "watching the pot boil".  Next step?  Replace the leakers.  I
>think that I mentioned the last set we bought cost about $24/injector
>for new units from GM.
>Shannen
>