Fuel Injectors
03-23-2019, 12:55 PM
#1
Fuel Injectors
I’m planning to replace my fuel injectors on my 997.1 C2S before I start driving my car more heavily this spring.
My dealer insisted there was no need to replace the injectors. Watching Jake’s video series tells me otherwise.
My indy thinks it’s a good idea, and we were going to do the job together this spring in his garage (he cuts me a huge break when we work on the car together at his home garage which I’m lucky to have access to).
Looking over my options: OEM Genuine Porsche injectors are $199/apiece; Bosch (listed as the OME supplier) are $45/apiece. Any reason not to go with the Bosch injectors over the OEM’s? It sounds like Bosch are the OEM injector suppliers...
Any suggestions for other projects while I’m in there?
My dealer insisted there was no need to replace the injectors. Watching Jake’s video series tells me otherwise.
My indy thinks it’s a good idea, and we were going to do the job together this spring in his garage (he cuts me a huge break when we work on the car together at his home garage which I’m lucky to have access to).
Looking over my options: OEM Genuine Porsche injectors are $199/apiece; Bosch (listed as the OME supplier) are $45/apiece. Any reason not to go with the Bosch injectors over the OEM’s? It sounds like Bosch are the OEM injector suppliers...
Any suggestions for other projects while I’m in there?
03-23-2019, 01:57 PM
#2
Rennlist Member
I don't see much risks here. We buy non Porsche parts all the time since most of the time parts are just rebranded with Porsche's box and tax. I am pretty sure you will see Bosch's logo on "Porsche's injectors" just like coils, plugs...
03-23-2019, 02:14 PM
#3
Car companies almost always make the body and he engine and generally almost nothing else. I imagine the correct Bosch injector would work fine. But why change them? Is the car running poorly? How many miles? The issues around injectors are mainly with DI. The DI injectors ( as well as the pumps) have been problematic with just about all car brands .Port injectors ( which are in your car) have been reliable for many decades and are normally trouble free for 100, 200+ K miles. Port injectors also have better air/fuel mixing so the problems you may reading about generally do not apply. Just use high quality gas ( Top Tier).
03-23-2019, 02:43 PM
#4
Car companies almost always make the body and he engine and generally almost nothing else. I imagine the correct Bosch injector would work fine. But why change them? Is the car running poorly? How many miles? The issues around injectors are mainly with DI. The DI injectors ( as well as the pumps) have been problematic with just about all car brands .Port injectors ( which are in your car) have been reliable for many decades and are normally trouble free for 100, 200+ K miles. Port injectors also have better air/fuel mixing so the problems you may reading about generally do not apply. Just use high quality gas ( Top Tier).
03-23-2019, 10:01 PM
#6
Drifting
03-23-2019, 10:28 PM
#7
Car companies almost always make the body and he engine and generally almost nothing else. I imagine the correct Bosch injector would work fine. But why change them? Is the car running poorly? How many miles? The issues around injectors are mainly with DI. The DI injectors ( as well as the pumps) have been problematic with just about all car brands .Port injectors ( which are in your car) have been reliable for many decades and are normally trouble free for 100, 200+ K miles. Port injectors also have better air/fuel mixing so the problems you may reading about generally do not apply. Just use high quality gas ( Top Tier).
Trending Topics
03-23-2019, 10:57 PM
#8
Drifting
LN/Raby
03-24-2019, 12:04 AM
#9
Three Wheelin'
I am planning on replacing the injectors in my 997.2 in the near future as my latest blackstone report showed like 1% fuel in the Mobile 1 oil after 6,000 miles. Also changing oil to Motul 5w-40. I will go the Bosche route when the time comes.
Last edited by doclouie; 03-24-2019 at 02:05 PM.
03-24-2019, 09:17 AM
#10
RL Community Team
Rennlist Member
Rennlist Member
The issues around injectors are mainly with DI. The DI injectors ( as well as the pumps) have been problematic with just about all car brands .Port injectors ( which are in your car) have been reliable for many decades and are normally trouble free for 100, 200+ K miles. Port injectors also have better air/fuel mixing so the problems you may reading about generally do not apply. Just use high quality gas ( Top Tier).
I don't think it's necessary in the .1 cars, just the .2 DFI cars
03-24-2019, 01:45 PM
#11
Drifting
Sorry dont believe this is true. Maybe the .2 injectors are more problematic but LN has mandated that all injectors on .1 rebuilds need to be replaced even if they test as good (as they did on mine). Maybe its not necessary on a car that is not subject to a rebuild but the implication is that .1 injectors can/have contributed to scoring (at least in some cases)
03-24-2019, 03:37 PM
#12
At 60K miles your injectors should be good unless they have been clogged by contamination or deposits. This should not happen if using top tier gas. You also mentioned that you have very low levels of fuel in the oil. How do your plugs look?
03-24-2019, 03:55 PM
#13
03-24-2019, 04:08 PM
#14
Sorry dont believe this is true. Maybe the .2 injectors are more problematic but LN has mandated that all injectors on .1 rebuilds need to be replaced even if they test as good (as they did on mine). Maybe its not necessary on a car that is not subject to a rebuild but the implication is that .1 injectors can/have contributed to scoring (at least in some cases)
03-24-2019, 06:41 PM
#15
With the 997.1 injectors well upstream from the cylinders a compromised spray pattern may affect atomization but would not result in gas being sprayed directly on the cylinder wall. Without fuel in the oil there is no indication that atomization is incomplete and IMHO there isn't any reason to replace the injectors other than peace of mind.