Pagoda SL Group
W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: lurtch on May 22, 2024, 22:16:08
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Hello All,
I pulled the plugs after completing two 80 + mile runs through the Wine Country back roads with my touring group. This was also proof testing for the new Pertronics unit I installed.
The car ran flawlessly the both times, so I was surprised to see this going on with #1 plug.
I am guessing that the #1 injector pintle is not seating completely, or (more likely) the spray pattern is distorted by partial clogging. ( resulting in poor atomization which leads to incomplete combustion ).
Anybody care to weight in on this?
Larry in CA
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Larry, looks like an "un-uniform" look to the plugs. #1 looks to be a little fouled. #2 & #3 may be a little hot? 4,5,6 look normal unless I have it all wrong...
Maybe you should find someone with one of those injector testers and see how they all shake out!
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..I am guessing that the #1 injector pintle is not seating completely, or (more likely) the spray pattern is distorted by partial clogging (resulting in poor atomization which leads to incomplete combustion)..
I agree Larry, #1 is definitely a bit rich and my first suspect would be the injector. One of those injector testers/cleaners Michael mentioned would come in handy right now.