Expert help needed for injector problem.

[Benag]

I've had this problem for at least the bad side of a month now. The first two injectors do not seem to be letting any gas pass but I don't believe they are clogged. A shop told me it was a bad ecu sending unit so I replaced the ecu with a used one (budget). It is doing the same thing. I checked my ecu for capacitor damage but it looks perfectly fine. What are the chances that the same problem is occuring with this second computer? The injectors do kick in when I am driving like it is missing really bad when it is warm. Any suggestions will be great. Thanks.
95 Eclipse GS-T. 83,000K. 5-Speed. No mods.

 

[DSM90AWD]

The first two injectors do not seem to be letting any gas pass but I don't believe they are clogged.

How did you test this? Did you take the injectors out of the intake and cycle the engine?

What are the chances that the same problem is occuring with this second computer?

nil, your computer is fine.

The injectors do kick in when I am driving like it is missing really bad when it is warm. Any suggestions will be great

I don't understand what you're saying. Is your car missing when cold, warm, only when under boost or all the time

Out of habbit I have to ask if you've replaced the fuel filter, are using correctly gapped NGK plugs and have pressure tested your intake (i.e. no leaking boost)

 

[Benag]

Fuel filter has been replaced, the two injectors were dry when I took them out, the other two weren't. I did notice that when I unplug the camshaft position sensor that all four injectors start working fine and the car runs perfect. Then I plug it back in and the first two injectors stop again. So does this probably mean that the sensor is bad? And crankwalk wouldn't cause the sensor to go bad would it?

 

[DSM90AWD]

I did notice that when I unplug the camshaft position sensor that all four injectors start working fine and the car runs perfect. Then I plug it back in and the first two injectors stop again. So does this probably mean that the sensor is bad? And crankwalk wouldn't cause the sensor to go bad would it?

Very possible that either the CAS and/or the crank pulley is damaged. The 2Gs are known to be susceptible to Crankwalk (abnormal thrust bearing wear) which can cause the crank pulley to make contact with the CAS due to excessive crank travel. Have you noticed a "ticking" sound coming from the belt-side and/or found your clutch to be feeling light, especially around left turns

Check this THREAD which shows a few diagrams of what to look for

 

[Benag]

No, I haven't noticed any difference in the clutch around turns, I've tested that. There is a ticking noise but it doesn't sound like it is coming from the belt. It sounds like it is coming from the intake manifold. Could it be a lifter tick? I'm going to have the CAS looked at tomorrow to see if it is bad or has been damaged.