Defective fuel injectors again, gas
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
Defective fuel injectors again, gas
My 18k mile C63 has done it again for the fourth time now. Back in October my engine hydrolocked because an injector locked open and filled the cylinder with fuel. Ok if near home but was on a trip 235 miles from home. It does this unannounced so trying to find a cure for this. This time around going to drop the fuel tank and see if there is a problem in there and if none is seen, then will put an inline fuel filter outside of the tank. I have put new injectors in from a reliable source and have had some cleaned professionally and the car purrs so nicely, then kapoo runs very sick in just a mile or so. I use the same gas station here, QT and use top end cylinder fluid at every fillup since the last occasion, but now see that doesn't help any.!
Has anyone else had a problem like this, and if so, have you found a cure to my problem? Is there a spray in liner inside the tank from MB that could be disintegrating slowly like Ford diesel trucks had problems with?? I've never had an MB with ongoing unreliability problems like this one has! This car is jinxed, WHY?? Thank you for any suggestions for my problem!
Has anyone else had a problem like this, and if so, have you found a cure to my problem? Is there a spray in liner inside the tank from MB that could be disintegrating slowly like Ford diesel trucks had problems with?? I've never had an MB with ongoing unreliability problems like this one has! This car is jinxed, WHY?? Thank you for any suggestions for my problem!
Junior Member
Joined: Oct 2020
Posts: 63
Likes: 23
From: Laguna Hills, CA
W204 C63 AMG
I have put new injectors in from a reliable source and have had some cleaned professionally and the car purrs so nicely, then kapoo runs very sick in just a mile or so. I use the same gas station here, QT and usetop end cylinder fluid at every fillup since the last occasion, but now see that doesn't help any.!
Has anyone else had a problem like this, and if so, have you found a cure to my problem? Is there a spray in liner inside the tank from MB that could be disintegrating slowly like Ford diesel trucks had problems with?? I've never had an MB with ongoing unreliability problems like this one has! This car is jinxed, WHY?? Thank you for any suggestions for my problem!
Has anyone else had a problem like this, and if so, have you found a cure to my problem? Is there a spray in liner inside the tank from MB that could be disintegrating slowly like Ford diesel trucks had problems with?? I've never had an MB with ongoing unreliability problems like this one has! This car is jinxed, WHY?? Thank you for any suggestions for my problem!
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
Defective injectors, NO, a BAD ECU this time
Recently after changing a couple of more injectors, one being wide open and filling one cylinder with fuel, called hydrolocked! this is getting crazy but I found a blurb from reading about Bosch injectors that basically told me the injectors might be getting erroneous voltages! AHA, this could be the signal so I removed my ECU and sent it to a shop that does rebuilds of electrical components. The results found was a defective driver on the circuit board. Also was told this is common on US cars but rare on German cars!
What happens I was told is that the spikes of higher voltages going to the injectors can warm up the solenoid, making it grow and bind up causing the injector to be stuck wide open! NOT GOOD for sure. A new ECU from Mercedes I was quoted recently is $1570 plus sales tax, then you have to pay to get it programmed for your VIN and other details/options on your car. This has nothing to do with the ECU getting defective signals in from sensors on the engine!
Hope this helps others that may have the same problems I was having for so long making my car very unreliable and with no warnings before it happens on the road!
What happens I was told is that the spikes of higher voltages going to the injectors can warm up the solenoid, making it grow and bind up causing the injector to be stuck wide open! NOT GOOD for sure. A new ECU from Mercedes I was quoted recently is $1570 plus sales tax, then you have to pay to get it programmed for your VIN and other details/options on your car. This has nothing to do with the ECU getting defective signals in from sensors on the engine!
Hope this helps others that may have the same problems I was having for so long making my car very unreliable and with no warnings before it happens on the road!
Member
Joined: Jan 2021
Posts: 192
Likes: 38
2013 C63 (W204)
Recently after changing a couple of more injectors, one being wide open and filling one cylinder with fuel, called hydrolocked! this is getting crazy but I found a blurb from reading about Bosch injectors that basically told me the injectors might be getting erroneous voltages! AHA, this could be the signal so I removed my ECU and sent it to a shop that does rebuilds of electrical components. The results found was a defective driver on the circuit board. Also was told this is common on US cars but rare on German cars!
What happens I was told is that the spikes of higher voltages going to the injectors can warm up the solenoid, making it grow and bind up causing the injector to be stuck wide open! NOT GOOD for sure. A new ECU from Mercedes I was quoted recently is $1570 plus sales tax, then you have to pay to get it programmed for your VIN and other details/options on your car. This has nothing to do with the ECU getting defective signals in from sensors on the engine!
Hope this helps others that may have the same problems I was having for so long making my car very unreliable and with no warnings before it happens on the road!
What happens I was told is that the spikes of higher voltages going to the injectors can warm up the solenoid, making it grow and bind up causing the injector to be stuck wide open! NOT GOOD for sure. A new ECU from Mercedes I was quoted recently is $1570 plus sales tax, then you have to pay to get it programmed for your VIN and other details/options on your car. This has nothing to do with the ECU getting defective signals in from sensors on the engine!
Hope this helps others that may have the same problems I was having for so long making my car very unreliable and with no warnings before it happens on the road!
