Injector reliablity
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Junior Member
Joined: Jan 2025
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Injector reliablity
I have read a lot about the damage that occurs if the injectors get stuck open with the 4.0 V8 engines and wanted to know what owners do for maintenance. I have read some owners change the injectors after X amount of years but this is a very expensive preventative maintenance task.
I have a 2018 GT C (557hp) 190 engine which has done 4200 miles with one owner up to last month when I bought it. I understand carbon build up can make them stick open but I also wanted to find out if they deteriorate through age and have any parts like seals that can cause an issue. I have consider having them removed for cleaning and flow testing which is £1300 for peace of mind. I have checked Bosch and found the correct injector is 'Petrol Fuel Injector 0261500804 Bosch'. I have also asked Bosch if they can confirm if they are the same injector as supplied to MB using the MB part number. If they are the same they are 1/3 of the price compared to the dealers. To have 8 new injectors fitted and have them testing before fitting would be approximately £2300. Sound mad testing new injectors but for £20 each its a small price considering I know someone who fitted new injectors on an Audi with one being faulty and caused an engine rebuild.
I searched really hard to find a car which such low mileage and it even had the original tyres with 4-5mm of tread left. I am keen to make it as reliable and would like a bit of guidance to whether the above is pointless or a worthwhile bit of maintenance.
I have a 2018 GT C (557hp) 190 engine which has done 4200 miles with one owner up to last month when I bought it. I understand carbon build up can make them stick open but I also wanted to find out if they deteriorate through age and have any parts like seals that can cause an issue. I have consider having them removed for cleaning and flow testing which is £1300 for peace of mind. I have checked Bosch and found the correct injector is 'Petrol Fuel Injector 0261500804 Bosch'. I have also asked Bosch if they can confirm if they are the same injector as supplied to MB using the MB part number. If they are the same they are 1/3 of the price compared to the dealers. To have 8 new injectors fitted and have them testing before fitting would be approximately £2300. Sound mad testing new injectors but for £20 each its a small price considering I know someone who fitted new injectors on an Audi with one being faulty and caused an engine rebuild.
I searched really hard to find a car which such low mileage and it even had the original tyres with 4-5mm of tread left. I am keen to make it as reliable and would like a bit of guidance to whether the above is pointless or a worthwhile bit of maintenance.
