Re: No spark 4ktq project

[Orin Eman <orin@wolfenet.com>]

> 	1) Fuel.  I have fuel, but I have to much.  when I turn key to ON
> position, FP jsut stays on.  I'm suspecting a Bad Check Valve or something
> leaking pressure off.  This with the assumption that the FP turns off when
> a certain FP is reached.  I guess that pressure is not being reached.  

MC ECU doesn't turn the fuel pump on until it has seen the RPM,
Timing and Hall sensors.  The fuel pump relay is probably
mis-wired for it to be on all the time.

> 	2) Spark.  this is the one that baffles me.  i have the wires
> hooked up to the coil right.  (I'll verify this this weekend)  I ran out
> of time to troubleshoot but I wanted to run it by the list before next
> weekend.  If I have the Hall Sendor and timing TDC pickup connected to the
> wrong connecots, would that cause it.  

As for the fuel pump relay, you don't get spark either.  You are unlikely
to have the hall sender connected incorrectly, but the RPM
and Timing sensor are easy to swap.  Or are you mixing the RPM and
Hall sensors up?  The engine must also be timed correctly,
or the ECU won't see the Timing sensor during the hall sensor
window and then you get the (in)famous hall sensor error.

> Engine was int he car and tranny installed when I installed the sensors.
> oops.  But I dotn see what this does.  There are no shims for them.  How
> do you change gap???  Finally, I painted block.  Does sensor bottom need
> to contact metal or jsut the screws.  maybe this is the problem.  I'm

It's a good idea to remove that paint.  It does affect the gap slightly.

> coil to make sure it works properly??  how do I check wires to coil to
> make sure coil is getting the signal to fire?  A Multi-Meter wont react
> fast enough.  Do I turn Ignition ON and turn crank by hand and watch for a
> voltage fluctuation (12v???) on the input wire??

Automotive multi-meter on RPM setting.  Connect it to what is usually
a green wire at the coil.  It should show a very low rpm
when turned over on the starter.  Turning the crank by hand won't work.
The RPM/Timing sensors are variable reluctance types which need faster movement.

Orin.