Serious Z6 problem. Need help ASAP!

[civic_x_95]

Ok, swapped a Z6 into a 91 SI Hatch running OBD1 with a jumper from rywire. Still running the A6 intake mani w/ Z6 f/Page Ranking regulator.

Motor is running on 2 cyl.

-Brand new plugs, cap, rotor, and wires.
-We checked compression its good.
-Checked timing it lined up good with marks and crank and cam are dead on for the timing belt.
-All 4 injectors are spraying, we pulled all the plugs and grounded them to check for spark and all 4 are sparking.
-Went through 4 distributors, ran on 2 cyl with all of them.
-Ran the ECU in a different car and the ECU works fine.
-Tried turning the distributor 180deg, that just changed the 2 cyl that were firing before to the ones that werent.
-Checked all grounds, plugs, wires, etc...

We thought maybe the jumper was bad or something in the wiring for the OBD1 conversion so we went back to OBD0 by notching out the old OBD0 distributor so it would bolt up to the Z6 head and so we could run the OBD0 ECU and it still does the same thing running OBD0.

Been at this for 2 days now. I'm out of ideas.

[HondatechAV6]

check spark timing this way: remove cylinder one spark plug. put it in the wire and hold it toward a good ground. hold your hand firmly over the cylinder to see if the spark fires when you feel compression from the cylinder. do this for all four cylinders. all four might be off but it's only off on two cylinders enough to cause no power on two. there can be a number of reasons why it's off, but first verify this is ok or not ok.

(this info is based on everything you said is ok is actually ok)


which year is the z6 from?(may make difference when looking stuff up)

[civic_x_95]

Originally Posted by HondatechAV6

check spark timing this way: remove cylinder one spark plug. put it in the wire and hold it toward a good ground. hold your hand firmly over the cylinder to see if the spark fires when you feel compression from the cylinder. do this for all four cylinders. all four might be off but it's only off on two cylinders enough to cause no power on two. there can be a number of reasons why it's off, but first verify this is ok or not ok.

(this info is based on everything you said is ok is actually ok)


which year is the z6 from?(may make difference when looking stuff up)

95 EX. we actually got all 4 to fire, but the timing is way off to do so and it backfires through the intake. we had to change the timing on the cam to get all 4 to fire.

[HondatechAV6]

wait...change the timing on the cam? how? ignition timing or engine timing?

[HondatechAV6]

man! tonight sure is fun!!

[civic_x_95]

yeah engine timing. it was dead on wen it was running on 2 cyl. moved the cam 1 tooth and thats when the other cyls started firing but now we areetting backfires through the intake.

[HondatechAV6]

well, engine timing was off in the first place in my opinion. i would definately take a careful calm recheck of crank tdc position and cam tdc position and set it dead on, then diagnose the misfire problem if it still exists.

[civic_x_95]

Originally Posted by HondatechAV6

well, engine timing was off in the first place in my opinion. i would definately take a careful calm recheck of crank tdc position and cam tdc position and set it dead on, then diagnose the misfire problem if it still exists.

Yeah we got it. damn haynes manual is fucking wrong for the firing order. I found this out by looking at a different car, and then some people on other forums said the same thing after I foudn out what it was. But we got it running.

[HondatechAV6]

awesome!! did you leave the engine timing off and just fix the firing order?

[civic_x_95]

Originally Posted by HondatechAV6

awesome!! did you leave the engine timing off and just fix the firing order?

Nah everything is back to where it's supposed to be. Now it's lots of miles to break her in before the 9th and then see what she runs all motor.