Ok, I'm running a SOHC ZC motor. I have good compressions across all pistons at 135psi and holding a piece. I have checked the timing and it is correct. I have checked the fuel pressure and it is OK. I haven't been able to figure out how to lean the fuel out though, but anyway, it starts up and runs pretty good EXCEPT it smokes like a chimney at all RPM's. I have replaced the cap, rotor, plugs and wires, and after I run it, the plugs are blackened and need to be cleaned. Has anyone had this problem and know how to solve it? I really would like to NOT buy a new motor. I have also replaced the O2 sensor and the fuel regulator that is connected to the end of the fuel rail that seems to be controlled by vacuum.

What I bought so far was an O2 sensor, which I can return. I bought a cap, rotor, plugs, and wires just to get it done and out of the way. I replaced the distributor and even though I was getting spark, I redid it anyway and checked for spark and got spark again, on each wire, on each plug, to each cylinder, the only thing I haven't been able to see is whether its sparking inside the engine, duh, LOL. I have checked the timing 4 times, I redid the timing belt and set the timing marks as perfect as you could imagine, as I took my sweet ole time to make absolutely sure they were EXACT. I did the compression and it was at 135psi, I cleaned the intake and the throttle body completely. I checked the EAVC on the back of the intake and have plugged all vacuums on anything that wasn't nessesary, which I checked and checked again. Now, it just cranks like I said, it doesn't even want to kick over. I haven't replaced the fuel filter or made sure it had a completely full to the top gas tank. BUT I know it gets gas. This is why it is so fustrating!? I want to see if this will freshen up minds

Thoughts:
1. Read sections A and B, in the link below, to help you determine if there's a problem in the ignition system:

https://www.askmehelpdesk.com/cars-t...ics-46563.html

If you can answer "Yes" to the 3 basic diagnostic questions, focus on testing/replacing the igniter and coil.

2. Constant smoking may indicate sludged up oil rings; therefore, AutoRx the engine. Afterwards, use 5W-30 Valvoline Synthetic MaxLife Engine Oil, which is an excellent high-mileage oil (ACEA A3, MB 229.3 rated) that should help keep the engine very clean.

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Originally Posted by spluvs2install

Ok, I'm running a SOHC ZC motor. I have good compressions across all pistons at 135psi and holding a piece. I have checked the timing and it is correct. I have checked the fuel pressure and it is ok. I haven't been able to figure out how to lean the fuel out though, but anyway, it starts up and runs pretty good EXCEPT it smokes like a chimney at all RPM's. I have replaced the cap, rotor, plugs and wires, and after I run it, the plugs are blackened and need to be cleaned. Has anyone had this problem and know how to solve it? I really would like to NOT buy a new motor. I have also replaced the O2 sensor and the fuel regulator that is connected to the end of the fuel rail that seems to be controlled by vacuum.

what I bought so far was an O2 sensor, which I can return. I bought a cap, rotor, plugs, and wires just to get it done and out of the way. I replaced the distributor and even though I was getting spark, i redid it anyway and checked for spark and got spark again, on each wire, on each plug, to each cylinder, the only thing i haven't been able to see is wether its sparking inside the engine, duh, LOL. I have checked the timing 4 times, I redid the timing belt and set the timing marks as perfect as you could imagine, as I took my sweet ole time to make absolutely sure they were EXACT. I did the compression and it was at 135psi, I cleaned the intake and the throttle body completely. I checked the EAVC on the back of the intake and have plugged all vacuums on anything that wasn't nessesary, which I checked and checked again. Now, it just cranks like I said, it doesn't even want to kick over. I haven't replaced the fuel filter or made sure it had a completely full to the top gas tank. BUT i know it gets gas. This is why it is soo fustrating!! ????????????????????????????????????????? I want to see if this will freshen up minds

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Well, it doesn't start, it just cranks now. I have set the timing to what the book says to do exactly, which was to set the crankshaft at the mark on the block, where the crank pulley is at the "red" dot in the center of the 3 slots, and the cam has been set to exaclt where the marks needed to be. I get spark, I get fuel, I tested the injectors and they are going on and off, I also pulled them from the motor and they did indeed spray fuel. I have not checked the MAP sensor because it is a ZC motor and they are different from the regular stock d16a6 where there are two hoses going to the firewall with I guess a pair of soleniods and so forth, this one is electronic. I checked the EAVC and it showed working properly. I have low compression but its still compression at 135psi. The damn compression tester stopped working today so I couldn't check it again. I have checked for spark time and time again, and always get it so its not to do with the distributor. IF YOU clean out your mailbox I can send you a PM but you have exceeded your mail space. What else you think could possibly I have mis diagnosed? This is driving me crazy!

Read sections A and B in the link below:

https://www.askmehelpdesk.com/cars-t...ics-46563.html

Does your car pass the 3 basic diagnostic tests every time?

Is the new distributor installed? Does it have a new ICM and coil?

Run the K-Test on your ECM.

If all of this checks out, I have reservations about all of the plugging of vacuum lines you did and how this affects your MAP sensor, which is the most important sensor on Hondas. MAP sensors are transducers, which convert changing manifold pressure into changing electrical voltage to the ECM. MAP sensors affect timing and fuel.

Ok, the next time I am at the car, I will make sure that all those steps are taken even if I have done them 3 or 4 times already. I have a feeling it is something else even more stupid!

It has a new distributor and it is getting spark. The coil is new and it is getting spark. I have spark tested it many times and it passes each time. I checked the injectors to see if fuel was an issue and it is not. I pulse checked them to make sure they were working properly, and they were. I don't know what else there is. I have checked timing and its dead on from what people have told me and what it says in the chiltons manual.