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2018 AMG GTR with 28K miles, downpipes and tune, few track days a year on dedicated track tires. I do a good amount of proactive and preventive maintenance. Just did my spark plugs this weekend. It was not too painful and requires a portion of the passenger side fuel line (the one before the high pressure pump) to be removed. I did not depressurize the fuel system and the leakage of fuel was minimum. Removed the spark plugs, measured the gaps (mostly between .026" and 0.28"), and replaced them with new spark plugs gapped to 0.022". Attached is a pic of the outgoing spark plugs. They look like the original plugs. After I put everything back together (and did an oil change) car ran normally. Outgoing spark plugs
2025 AMG G 63 SUV /// 2025 AMG GT 63 S E Performance 4 Door Coupé
Plugs look good. Nice and dry. The electrodes look good too, except for the bottom left, but that could just be the picture.
A sign of quality engineering and proper maintenance!
I have a gtr stage 2 with upgraded ( spool high pressure pump ) running on E30 .
Out of no where the car started to loss fuel pressure and it gave me the error code (p0087 fuel pressure in the system is too low ) I talked to my mechanic , he told me to take live data so we found out the right cylinder bank drops more than the left when we switch off the car and he told me to replace the pump as a solution so we make sure that the is from the pump we did this and the right side pressure numbers dropped and we took live data to the pump and we found out when we switch off the ignition the right cylinder bank drops quickly
To (10bar) and the left cylinder bank is (90) which is I think is not normal . Then I took out the spark plugs and the fuel injectors to check them I found them black . to make sure that the issue is from them so I replaced them and I took live data again and the results in the left cylinder bank is dropped at this point I was lost and don’t know what to do else to fix the issue. My technician recommended to replace the left cylinder banks to new ones ( four injectors and four spark plugs ) and we did this.we took live data the results were much better but the right cylinder bank pressure dropped more than the left when I switch off the ignition for example 45 right bank to 90 left bank psi.
I need to know is this normal ? and should continue driving it normally??
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
