D16Z6 Tech Help
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From: Altoona, PA
D16Z6 Tech Help
Helping a friend with a swap. Its into his EK hatch for now, so he has something to drive. Originally we though the Z6 head had bad valves and compression was low. The machine shop said that 3 valves each in a different cylinder would not properly seal.
Today we swapped his D16Y7 Head on to drive in the mean time of doing some other "fixing" to his head. We're really not fixing anything, except the low HP numbers on the D-series.
Well after the Y7 head was swapped on and everything set up, we couldn't possibly get the car to run right. We checked spark to the plugs, the plugs were new so we checked them as well. We made sure the car was at TDC and the Distributor was firing the number 1 cylinder. We then checked our wiring making sure everything was plugged in correctly. We then swapped the ECU's from a P28 to a P06, still no luck. Then swapped the stock D-Series throttle body for a GSR temporarily. Still no luck. Then we swapped the injectors out of the D-Series in my EG Hatch that I drove over. Still no luck.
Eventually we got to thinking of trying to throw codes, because the car sounded starved of fuel and we could hear a valve sucking and popping trying to resolve some kind of issue. So we disconnected the MAP sensor, nothing. Reconnected the MAP and then went to TPS. Nothing. Then Re-disconnected the MAP while the TPS was undone too. Nothing.
No codes thrown, with both sensors unplugged. So my friend called our other friend, who happened to have just got off work and is quite intelligent when it comes to tech stuff on Hondas, like so.
He had said that it must be something in the wiring from the OBD2 harness to the OBD1 plugs. Now keep in mind that this car ran previously with an OBD1 motor connected to the OBD2 harness in the exact same way. And that all the other problems he could think we've already looked over.
I myself believe that there is something wrong with the TPS, at the very least because of the fact that when you open the butterfly on the throttlebody, the car dies. It wont maintain Stoich. It gets wayyyyy more fuel then air and dies.
So we squirted a ton of starter fluid into the intake and turned it over, and nothing. Then opened the butterfly and turned it over and it revved and revved and revved. It ran so much better. Then the fluid all burnt out and the motor died. Therefore it was still not having enough gas.
Anyone know where there could be a possible short, etc. We've already double checked any connections visible we're the harnesses were mated.
Help or questions, tips, anything that would help us or anyone else out for that matter are superbly encouraged.
Today we swapped his D16Y7 Head on to drive in the mean time of doing some other "fixing" to his head. We're really not fixing anything, except the low HP numbers on the D-series.
Well after the Y7 head was swapped on and everything set up, we couldn't possibly get the car to run right. We checked spark to the plugs, the plugs were new so we checked them as well. We made sure the car was at TDC and the Distributor was firing the number 1 cylinder. We then checked our wiring making sure everything was plugged in correctly. We then swapped the ECU's from a P28 to a P06, still no luck. Then swapped the stock D-Series throttle body for a GSR temporarily. Still no luck. Then we swapped the injectors out of the D-Series in my EG Hatch that I drove over. Still no luck.
Eventually we got to thinking of trying to throw codes, because the car sounded starved of fuel and we could hear a valve sucking and popping trying to resolve some kind of issue. So we disconnected the MAP sensor, nothing. Reconnected the MAP and then went to TPS. Nothing. Then Re-disconnected the MAP while the TPS was undone too. Nothing.
No codes thrown, with both sensors unplugged. So my friend called our other friend, who happened to have just got off work and is quite intelligent when it comes to tech stuff on Hondas, like so.
He had said that it must be something in the wiring from the OBD2 harness to the OBD1 plugs. Now keep in mind that this car ran previously with an OBD1 motor connected to the OBD2 harness in the exact same way. And that all the other problems he could think we've already looked over.
I myself believe that there is something wrong with the TPS, at the very least because of the fact that when you open the butterfly on the throttlebody, the car dies. It wont maintain Stoich. It gets wayyyyy more fuel then air and dies.
So we squirted a ton of starter fluid into the intake and turned it over, and nothing. Then opened the butterfly and turned it over and it revved and revved and revved. It ran so much better. Then the fluid all burnt out and the motor died. Therefore it was still not having enough gas.
Anyone know where there could be a possible short, etc. We've already double checked any connections visible we're the harnesses were mated.
Help or questions, tips, anything that would help us or anyone else out for that matter are superbly encouraged.
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