S4 N/A trailing coil help
03-20-14, 09:11 PM
#1
Full Member
Thread Starter
S4 N/A trailing coil help
87 s4 NA stock.
Got nothing to do so i check the timing.
Warmed up the car, connected timing light to L1, good constant spark, connected to T1 or T2 and it spark most of the time, its fires inconsistently.
Could it be a back ground or the coils starting to go?
looking at the engine, it does slightly shake (could be bad engine mount :P)
I did replace the spark plugs with NGK BUR7EQ AND 9EQ and NGK wires.
forgot to take pic of the old plugs but the 7EQ plugs, the center electrode was pretty worn out doesn't look flush with the ground electrode. the 9EQ center electrode is slightly rounded but it look flush with the center electrode.
Hope this short vid helps.
https://www.youtube.com/watch?v=p6B4...ature=youtu.be
Got nothing to do so i check the timing.
Warmed up the car, connected timing light to L1, good constant spark, connected to T1 or T2 and it spark most of the time, its fires inconsistently.
Could it be a back ground or the coils starting to go?
looking at the engine, it does slightly shake (could be bad engine mount :P)
I did replace the spark plugs with NGK BUR7EQ AND 9EQ and NGK wires.
forgot to take pic of the old plugs but the 7EQ plugs, the center electrode was pretty worn out doesn't look flush with the ground electrode. the 9EQ center electrode is slightly rounded but it look flush with the center electrode.
Hope this short vid helps.
https://www.youtube.com/watch?v=p6B4...ature=youtu.be
03-21-14, 10:30 AM
#2
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The trailing spark will not be consistent as the leading.
So in my opinion it is good.
Also since the 7's are leading plugs they will tend to show more use than the trailing plugs will.The 7's are hotter plugs.
So in my opinion it is good.
Also since the 7's are leading plugs they will tend to show more use than the trailing plugs will.The 7's are hotter plugs.
