we just put a ZC motor in a dx hatch, wired from dpfi to mpfi, all that is right, but when we start it up its sounds like its on two cylenders. we check time with a timing light/gun. the thing is that the the light on the gun wasnt stay constent, like that dizzy was firing funny. do you think it could be the ICM in the dizzy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by evilsolb16 &raquo;</TD></TR><TR><TD CLASS="quote">we just put a ZC motor in a dx hatch, wired from dpfi to mpfi, all that is right, but when we start it up its sounds like its on two cylenders. we check time with a timing light/gun. the thing is that the the light on the gun wasnt stay constent, like that dizzy was firing funny. do you think it could be the ICM in the dizzy.</TD></TR></TABLE>

Explain the firing a little more, how was it firing funny ? Its either the distributor, spark plug wires, cap or rotor.

 

the dizzy will fire a few time constantly then it just starts goin crazy, like ti skips and then it fires really really fast

 

I would say its the distributor.

If it was either the cap, rotor or wires it would be the same all the time.

 

you sure the rotor in the dizzy is fastened down? It can do some crazy stuff when its loose.

Use the helms and run a diagnositc with a multimeter

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXDrew &raquo;</TD></TR><TR><TD CLASS="quote">you sure the rotor in the dizzy is fastened down? It can do some crazy stuff when its loose. </TD></TR></TABLE>

Sounds like the rotor to me too.
Either that or something else going bad in the distributor.

What CEL codes are you throwing?

 

sounds like the rotor is loose.... pop the cap and make sure its on correctly. once it pops off it can do some damage.

 

checked rotor, nothing wrong with it i think that the coil is bad. cause now we cant get any spark. if any one know somebody gettin that has an obd 0 si or zc dizzy they want to get rid of let me know

 

im just tellin you want happened
the **** went cazy

 

Maybe the timing light is junk, what kind is it ?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SloS13 &raquo;</TD></TR><TR><TD CLASS="quote">How is it physically possible that a timing gun would flash faster than normal?

The rotor and pickup for #1 only meet up once per rotor rotaton</TD></TR></TABLE>

Hmm... could be junk plug wires.
Maybe they are leaking spark causing mad misfire.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by evilsolb16 &raquo;</TD></TR><TR><TD CLASS="quote">sounds like its on two cylenders.</TD></TR></TABLE>

My car sputters on deceleration and also sounds like it's running on 2 cylinders. Checked ignitor, plugs, wires, rotor, cap, injectors, everything....The only thing I found was a bad ignition coil. The primary winding resistance was out of spec.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by evilsolb16 &raquo;</TD></TR><TR><TD CLASS="quote"> we check time with a timing light/gun. the thing is that the the light on the gun wasnt stay constent, like that dizzy was firing funny.</TD></TR></TABLE>

My timing light did the same thing. The light would drop out for about 1 sec every 5-10 seconds at idle. The pauses were longer as rpm dropped after i revved the motor.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SloS13 &raquo;</TD></TR><TR><TD CLASS="quote">How is it physically possible that a timing gun would flash faster than normal?</TD></TR></TABLE>

I think the coil wasn't putting out enough voltage so the inductive pick-up on the #1 wire didn't register. It's like the coil would drop out (flashes stop) and when it had enough voltage it would speed up.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CRXDrew &raquo;</TD></TR><TR><TD CLASS="quote">Use the helms and run a diagnositc with a multimeter</TD></TR></TABLE>
Find a helms and test your coil.

Good luck

 

tru alright man thanks