Hi guys a summary of what happened today. We did a STAR Diagnosis, checked everything and here are the results:The variable camshaft timing is meant to
Losing power, shaking, smoke -- to me, it seems like the combined effect of several faults. Being intermittent, I think the root cause is an electrical gremlin of some sort.
Car is still working bad which was nice for the stardiagnosis, stopping the injectors on each cylinder (from the software) revealed that cylinders 8,9 and 12 do not affect the work of the engine at all, meaning injectors are not squirting or are squirting all the time? Live readings of the engine however revealed injector squirt time to be 4 ms as expected but that is not squirt quantity right? I hope that these three not working cylinders are the problem so that we have a direction.
Interesting thing is that we replaced two spark plug cables on cyl 8 and 9 and spark plug only on cyl 8 (we did not touch cyl 12 as it harder to get to), hoping that engine will start working better, however there was no difference. Yet we did measure resistance in the harness and its obvious that there is electricity going to the injectors.
Our next planned step is to try with my friend's distribution cap and rottor, since we checked almost everything on the whole chain! And if that does not yield results i guess next suspect are the injectors? I doubt clogged catalitic converters, can cause only those 3 cylinders to stop working?
There werent any other apparent errors other than, an error on LH2 module but (my friend can confirm) it was something temporary because we switched the modules the day before and we also unplugged the injectors. I think it dissapeared afer being cleared.
Also when we started the car the MAF sensor reading fluctuated alot but only for a few seconds and then stayed steady (i hope its normal behaviour since we did change the wiring).
Not sure but when we looked way inside the cylinder after the sparkplug was removed i saw it was dirty (oil or whatever) is that how its supposed to be?
Looking forward to your reflections on the results.
Some photos of the spark plug and inside the cyl (not very clear though):