[urq] //S4cylinder (still striking out) 1.8 coil mod.

AUDIJIM at aol.com AUDIJIM at aol.com
Thu Jan 26 14:02:12 EST 2006


Yesterday my friend Bob came over with his S6 Avant and we swapped complete 
coil pack assemblies. I removed mine and put it on his engine and we started it 
up and went for a drive. His car ran flawlessly, pulled like a freight train 
up to 7000 rpm and never failed. There was no reason to install his coil pack 
on my car after that. So this means that all my coils pack are good. This will 
also mean that I have a bigger problem on my car. Since it now confirms that 
I have everything testing good from the ECU to the POS's, the POS's, and now 
everything past the POS's, it will mean that I have a mechanical issue. So, 
with a compression test that tested good, a leak down test that tested good, fuel 
injector test/swap/wiring is good, ignition test/ECU/wiring/POS/coils/spark 
plug boots/spark plugs all tested good and/or replaced with new, I'm left with 
either valve train issues or piston/lower end issues. This weekend, I am going 
to (once again) pull the valve cover and cams, and lifters and inject 
compressed air into the cylinder to keep the valves from falling into the cylinder. I 
will then remove all the valve springs and see what I have going there. When 
I checked the springs when I installed the new lifters, I never took them all 
the way out to inspect, I only visually looked at them for major problems. If 
#4 cylinder valve springs check out OK, I will continue to drive the car until 
I finish rebuilding my other AAN. This nightmare isn't over yet, but I wanted 
to thanks everyone who has suggested anything related to my problem. Please 
keep your suggestions coming! If there is anything I have over looked, please 
feel free to chime in.



Jim


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