No spark

[ZVOLV]

In my case, I had a bad reman ECU right outta the box. It would run fine for a while and then an injector driver would crap out and that cylinder would be a dead misfire.

The test lamp would blink at first, but then when it started missing, I would no longer be able to get the test lamp to blink between B+ and the misfiring cylinders injector control circuit.

I worked with a guy whom used a SnapOn LED test lamp for almost ALL his electrical diag. LED lamps will trigger on low voltage circuits such as 5v circuits. A LED test lamp would be great in these old Volvo's for confirming a good 5v square wave signal from the EZK to the powerstage.

I hope you enjoy your project and hopefully more tow trucks!

 

[2 old for this]

Why is the fuel filter above the exhaust manifold? Heat rises which with the filter where it is can lead to vapor lock or worse - fire.

 

[Cwazywazy]

The heat atomizes the fuel and increases MPGs. I read it in Cosmo.

 

[Otto Mattik]

Interesting in your video, the cranking reminded me of a car with timing or ignition issues.

Fuel filter above exhaust ?