Here is the situation. I have a '95 Acura Integra with a JDM B20B in it. Since I have had it, I have had to replace the head (this process included new ARP headstuds, all new gaskets, etc.), changed oil, changed coolant, and timed the motor. Everything is getting spark, I have checked this by arcing spark plug wires on a ground wire while the car is running one at a time and they are getting a decent spark. When I pull the plug wires in cylinders 1, 2, and 3, it does not affect the way the car runs and it continues to rock around in the engine bay running like ****. I replaced fuel Injectors, spark plugs, igniter, coil, plug wires, etc. and it is still running like ****.

With the above said, does anyone know what my problem is? I am running a obd1 po6 ECU, with an LS harness.

 

You never addressed the problem. I am going to assume it is just running like crap, most likely firing on 3 cylinders. Correct me if I'm wrong.

Has the ECU been checked to see if it is good? Was it running the car before?

My other guess is a faulty MAP sensor or circuit. Did you perhaps mix up the TPS and MAP sensor harnesses when you reinstalled the head? Any CEL's?

 

Its only running on cylinder 4. The JUN ECU helped the idle, but not much. When I give it gas to about 3k rpm it sounds like its running fine. The ECU was pulled out of a running Civic DX, '93. I may have crossed a map with a TPS, I diddn't check for that I just assumed I had the plugs right in the first place. Car is not throwing any codes with the po6 but it is throwing codes with the JUN p28.

 

It isn't possible to be running on only one cylinder. Your "test" is flawed. I still think it is a MAP issue.

 

I pulled the spark plug wires from cylinders 1, 2, and 3 at the same time and the engine stayed running, but like complete ***.

 

Please adj. your valves and buy a $20.00 Pep-Boys compression tester.

 

I pulled the valve cover off and inspected the valve springs. I can compress nearly all of them with my hand. I just bought this head off of a guy who told me it was mint.

Gotta love 90% of the people we deal with in the Honda world.

 

on a stock b20 you should be able to push it down by hand

 

Nobody?

 

And you checked the valve adjustment? What was it? What is the compression per cylinder? If you atleast do not do the simple stuff, how can you expect an answer?