I have a '90 Acura Integra that has been giving me problems. First, it was only starting when it was cold... i realized that it was a problem with the relay so i got that fixed. But now it has been missing and i'm not sure why. I checked the compression and they were all pretty good. All plugs are good and they are all sparking. My dad told me to test the injectors but im not quite sure how to do that... any advice?

 

best thing you can do go to a junk yard and pull injectors from a wreck. Just swap out one at a time until its fixed

 

junk yard injectors is 1 way here is another idea...start and run the
engine then unplug 1 enjector at a time till you find 1 that effects
the engine a ton...ie it really stumbles and almost dies...mark it good
then..

keep unplugging till you find 1 that really doesnt change a whole lot
runs about the same unplugged or plugged... if you find 1 then
mark it bad...

now take the 2 injectors out and swap em... then fire the engine back
up and unplug the known good 1 and see if the engine
stumbles. if it does then you know that the good injector
has proved the bad injector bad.

If for some reason when you unplug the known good injector and it acts
like the bad injector then something else is effecting that
cylinder...ie spark plug or compression or valving.



another place to look is the computer temp sender as well as timing.