jonesdesign

Hello everyone, this is my first post. Of course im here cause I have a problem that needs help solving, I have a 90 accord automatic with a 92 motor in it , and here are my issues...


Car History: been sitting on the backside of car lot for months, ran fine before that. I replaced (as needed) the plugs, wires, rotor, cap, battery, crank pulley,alt belt, pwr steering belt

First Issue: Cylinder #1 (going from right to left) is not firing, the motor was running rough and I figured it was a misfire of some sort so I pulled each plug wire, one at a time. 4,3,and 2, are all firing since they severly affected the idle when pulled, but #1 makes no change in the idle when pulled.I have done a compression test on all 4 cylinders, and they are all at 145-150 range so all should be well there right? So that leads me to believe its a fuel problem.. so lets see if i narrowed it down to the fuel pump, the fuel pressure regulator, or the fuel injector (did I miss anything?). So I swapped injector 1 and 2 with each other in hopes that cylinder 2 wouldnt fire and solve my problem with a bad injector, but now 1 and 2 arent firing.
Could that be a fuel pressure reg??? or fuel pump?

Second issue: The classic idle problem, it revs up and down when warm and idling, I checked all vacuum hoses, and even pulled the IACV and cleaned it good with brake fluid cleaner (didnt even seem that dirty) and still have the idle problem.


Thanks,
Jason

flycatcher

mines was the igniter on the distributor.

jonesdesign

UPDATE:

2 days prior i did the compression tests, and after not resolving the problem, sent it to a local shop. They said #2 cylinder didnt have any compression, but cylinder 1 and 2 didnt seem to work after i swaped the fuel injectors, so can i loose compression out of a fuel injector seal?

Thanks,
Jason

jonesdesign

UPDATE: car is now firing on all four cylinders, the shop must of messed up on doing a compression test (retards), when i swapped injector 1 and 2 i did not get a good connection between the injector on #2 and the plugin part, so in summary...


Here is what I have learned from this.

-dont reli on shop tests as the end all be all
-trust your own common sense when working on a car.
-fuel injectors can be cleaned using fuel injector cleaner (by submerging the tip of the injector in the cleaning fluid)

Thanks to eveyone who tried to help.

Jason

craddock01

Run a can of SEAFOAM thru your engine once a year to clean your injectors.