... Prior to adjustment the voltage was cycling between about .5V and 1V so about 93-96 % at idle. ...
That‘s about what I expected.
... Last winter the car sat for maybe 3 months, and this winter a month or two. It is definitely a possibility that it had ethanol fuel in it during that time. ...
Fits into the picture too.
... I've attached an image of the first 5 spark plugs after driving for about 10 minutes at 2500 RPM. ... ... so if 5 minutes is a specific time I can redo it! ...
10 minutes is even better than 5 minutes. And from the appearance of your spark plugs it seems that the ignition system is now properly working, which substantiates my suspicion that the higher duty cycle at 2500 RPM is caused by contamination in the FD. … I suggest to use a good injection cleaning additive at its highest dosage for at least 2 or 3 tank fillings.
13 & 2 released: .5 ohm Depressed: 4.97k
5 & 2 I got no connection either released or depressed
24 & 2 Released .5 ohm Depressed: No connection
There is a problem with the resistance between 13 & 2. With the pedal depressed it should be infinite. Check resistance at the disconnected TPS connector (see attached image) between pin 1 (left) & pin 2 (center):
- with the throttle closed you should see less than 1 Ω (as you did between 13 & 2).
- up form when the throttle starts to open you should see infinite
It’s not relevant for the symptoms you reported so far, but when you checked the resistance between 5
& 2, did you depress the gas pedal really completely
, like I said in post 97 ?
… If so, check resistance between TPS connector pin 3 (right) & pin 2 (center) with the pedal completely depressed. It should be less than 1 Ω !
... I have not yet taken a look at the camshaft lobes however it is on my to do list! to do this I essentially need to unbolt the top cover of the engine correct? ...
That’s correct … and not difficult. But when you put it back on, tighten the bolts homogenuosly and not too much, otherwise the valve cover might get warped and the rubber gasket leaky. Don’t go over 9 Nm. If you don’t have a suitable torque wrench and you feel insecure, use a small ratchet with a hole at the end of the handle and a spring scale, if you have, and do a little math. … And make sure the gasket sits correctly in the machining notch at the rear of the cylinder head.
you take off the camshaft oil pipe for a better view on the camshaft, be careful with the bolts when you reinstall it. The M5 aluminum thread holes can easily be overtightened !
I suggest to turn the camshaft manually by turning the crankshaft clockwise !
using a ratchet and a 27 mm socket. For easier turning you can remove the spark plugs … and use leather gloves for protection against the radiator’s rough surface.
... After reading through the discussion on them I decided I'd like to replace my valve stem seals however I'm just a bit intimidated as I've never done any work "inside" an engine. Is this job a DIY one or is it better left to professionals?
From your spark plug images it does not appear that your engine is excessively burning oil. Check if you see engine oil leaking somewhere (see what I said in post 75 about the front cover). And check for coolant cleanness in the reservoir.
the camshaft is worn, then I suggest to replace the valve stem seals at the same time when you replace the camshaft (& rockers), of course.
As I already mentioned in post 75 … and against other opinions
… changing the valve stem seals alone might stop all excessive oil burning. The valve guides are often still in good condition, while the seals have been toast for a long time already.
Replacing camshaft / rockers and valve stem seals takes a thoroughly working and experienced (DIY) mechanic about 6-7 hours. It requires some care, of course. In order not to ruin the engine, especially the timing chain has to be put back in correct relation to the camhaft sprocket, and the chain tensioner has to be reinstalled properly. … It’s something that, in case of doubt, I suggest to have done by someone who knows how to do it and has done it before.
Merry Christmas to all readers !