Quote:
Originally Posted by Aurora40
Just a thought, but you said it's unlikely the injectors would both be plugged in a cylinder. I'm not sure that matters, does it? If you supplied 1/2 the fuel needed by the air in the chamber (because one injector was clogged), would it burn? I was of the understanding that past a certain mixture, the fuel would not actually ignite as it's too dispersed (something like 15-16:1)?
But it sounds like you've ruled them out, because you've visually seen them spray properly.
Does your scanner show knock events, since you suspect the knock sensor?
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At idle the calibration operates only one injector, hence my reason to add throttle - turning on the second injector. Nada... Then later, what the hell, got the plenum off - might as well ohm out and then function test the individual injectors...Nada again.
Yes - I should have elaborated on that - by "no codes" I should have said the knock count was zero as was the knock retard. Hmmmm... Now Bob G had an issue with a replacement knock sensor, the reason I was specific about getting one for a 90, as in 91 the sensor is different. However, the GM guy said the part number I gave him was the old Delco part number and he cross-referenced it to the new AC Delco number. But, in spite of all appearances and scanner readings, I'm dubious as far as the sensor goes. Ain't gonna cost nuttin to put the old one back in and see what happens, is my thinking now. Like I said: Running out of options.
P.