Quote:
Originally Posted by gomezoneill
Look's to me that 4 of your plugs are running rich. I'm guessing, but possibly injectors, engine temp sensor. Did you take those plugs out after warm up and good running for the photo? The two at the bottom right look correct the others not good.
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I took the plugs out after horrible wet weather misfires, the misfires were so bad, that i did not even start the car before changing the plugs. The temp sensor sounds possible, i´ve bought some contact cleaner and planned to service every electrical contact point i can find in the engine bay. Also bought STP ultra fuel system cleaner, people seem to have got great results with it.
Quote:
Originally Posted by Mixed76
Consider some fuel injector cleaner. Drive a while and recheck the plugs. Looks like four running rich and two lean. Can also pull the injectors and send out for cleaning. If you pull them, consider flushing the fuel lines from filter to injectors.
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As stated above, i initially went with the easiest (STP) option, but maybe should consider disassembling the injectors and cleaning them thoroughly if nothing else helps to get rid of the misfires.
Quote:
Originally Posted by proporsche
ok for the plugs ....if you had those 4 prong we had a lot of problems with those..but back to the basics all this and did not changed a thing ,correct?
Also look inside the cap and take a picture so we can see it before cleaning...any white smoke on 1st start in the morning...i`m asking because the spark plugs colors is all over.....pointing to the valve guides.Do not want to scare you- i did back in the early 1990` 3x 1987 with worn out valve guides with under 40K miles.... It never does it warm?
Ivan
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Could the plugs have gotten contaminated because of the misfires? I read that incomplete combustion could contaminate them in oil and carbon deposits, im not an expert yet again just a thought.
And yes after all the parts i´ve changed the issue remains almost unchanged, the car is a lot more responsive and smooth running when hot, but the cold engine issues remain. And in the first drives of 2020 season after oil change i got crazy amounts of white smoke in the first few starts, but after that normal amount (Barely noticeable, sometimes 0). Sounds fun, hopefully my problem is a bit more simple. The car indeed never misfires when warm, runs perfectly smooth.
I´ve attached pictures of the cap and rotor, found out there was some carbon deposits and rust, normal wear or not?
