[c172s]

I have positioned the etch mark on the flywheel of my '88 Spider to the 12:00 position, with crankshaft at TDC, but no.1 cylinder does not fire properly.
At the 12:00 position, the magnetic pin on the flywheel is at approximately the 2:00 position, about 60 degrees away from the sensor on bell housing, at approximately the 4:00 position. Could this be causing the problem with no. 1 cylinder not firing properly?
What is the proper position of magnetic relative to the bottom sensor on the bell housing?
Do I have the flywheel aligned properly and something else is causing the problem.
Thank you.

 

[Andrew]

When you say #1 is not firing, are 2-4 firing?
The manual shows the proper orientation of the pin, I bet it's here on the BB somewhere but I can look at my shop manual.
Andrew

 

[c172s]

Thank you.
Yes, 2 - 4 are firing and the flywheel is at the 12:00 position, the peg on side of flywheel is approximately 4:00 position with engine at TDC.
I have come to the conclusion it has soethng to do with the ECU.

 

[Andrew]

Yeah, if any of them is firing, it wouldn't be the location of the pin.
You've checked the wire, plug, "distributor", fuel supply, compression, injector getting juice, etc. to #1?
Andrew

 

[ghnl]

Inspect the cap, rotor and wires very carefully. The ECU tells the coil when to discharge, the distributor is just a four way switch to distribute the coil output to the appropriate spark plug. The correct rotor has a wide tip. A narrow tip may fit but the tip may end up too far away from the contact inside the cap when the computer says 'make spark'.

Also try taking the wires out of the wire holder on top of the cam cover and separating them (keep the firing order correct). Wires with faulty insulation running parallel can induce current to an adjacent wire - losing current in the process.

Lots more info in the L-jet Spider Diagnosis page - click the link in my signature.

 

[c172s]

Yes. It almost has to be the ECU at this point.
Thank you.

 

[c172s]

Inspect the cap, rotor and wires very carefully. The ECU tells the coil when to discharge, the distributor is just a four way switch to distribute the coil output to the appropriate spark plug. The correct rotor has a wide tip. A narrow tip may fit but the tip may end up too far away from the contact inside the cap when the computer says 'make spark'.

Also try taking the wires out of the wire holder on top of the cam cover and separating them (keep the firing order correct). Wires with faulty insulation running parallel can induce current to an adjacent wire - losing current in the process.

Lots more info in the L-jet Spider Diagnosis page - click the link in my signature.

Thank you.
Will do.