Fuel Injector problems. WHY??
Thread Starter
Member
Joined: Jul 2012
Posts: 91
Likes: 3
From: Charlotte, NC
10 C63/p31, 84 190/5.8L, 14 Audi Q5 TDI, 03 Suburban /8.1, 87 Porsche 944/358" 77 Ferrari 308 Dino
Fuel Injector problems. WHY??
My 2010 C63 a few months ago lost two Bosch injectors and since two went out, I replaced all eight of them. The car ran fine until last weekend when out of state (naturally!) I lost two more of the new ones! I thought I'd blown the engine as it would not start or even turn over, locked up solid ! I had it trucked 225 miles home to my favorite MB indie mechanic. He removed the spark plugs and went in with a borescope and found 1 cylinder full of gas, so it was hydrolocked! So he spun the engine with no plugs to clear all of them of any fuel, then drained the gas, replaced two spark plugs, two injectors and a full oil and filter change in case the oil had some fuel in it. So why is my engine eating injectors....too high a pressure.?? Does the Bosch #43834RB fuel pressure sensor need to be replaced and what exactly does it do in the system? Why else would they foul so quickly, we're lost here!! BTW the car now has 17,436 miles on it, go figure!!
Thanks any MB techs that has seen this problem in their past....
Thanks any MB techs that has seen this problem in their past....
Super Member
Joined: Mar 2019
Posts: 522
Likes: 129
From: Bondi Beach , Australia
2013 W204 C63 AMG P31 Estate wagon
Wow that's bad news.
I had read about old OEM Mercedes ones failing but not nearly new ones.
I replaced a set of old working fine OEM ones with a set of new OE Bosch ones from FCP Euro about 18 months ago and touch wood they have been good.
I had read about old OEM Mercedes ones failing but not nearly new ones.
I replaced a set of old working fine OEM ones with a set of new OE Bosch ones from FCP Euro about 18 months ago and touch wood they have been good.
