Replaced Injectors now CE light on and car running BAD
Thread Starter
Newbie
Joined: Aug 2018
Posts: 5
Likes: 0
W211
Replaced Injectors now CE light on and car running BAD
I recently bought what was advertised as rebuilt OE injectors. I don't think they are as they are blue unmarked ones so I'm thinking they might be Chinese copies. They appeared to have the same physical characteristics of the originals so I fitted them. I'm confident that I have fitted them correctly. I also bled the system. When I first restarted the car everything felt good but it blew a **** load of blue smoke out the exhaust which smelt heavily of fuel. After a while the smoke went away. I wasn't able to test drive it straight away.
The next day (today) I went to go for a test drive and and the car is running like a pig, blowing heaps of very fuel smelly blue smoke and the Check engine light is coming on then going off and it sounds like its running on 3 cylinders. I don't have access to a scan tool so haven't checked the codes yet but before I either book it into a mechanic or buy an inexpensive scan tool I have a couple of bits of information I would like to know:
1- is it normal to have to clear all engine codes after replacing the injectors?
2- Does it sound like an issue of just clearing engine/fuel faults because it thinks there's a problem at the moment?
3- I've had a good look at my work and I'm confident that I've refitted everything properly, but is there anything that stands out as having need to be checked.
4- Could the MAF have any influence?
I don't know why but I'm scared something found its way into the engine when I was mucking around with the injectors.
I'm about to start hunting for cheap scan tool that will work and be able to clear codes - any suggestions?
The next day (today) I went to go for a test drive and and the car is running like a pig, blowing heaps of very fuel smelly blue smoke and the Check engine light is coming on then going off and it sounds like its running on 3 cylinders. I don't have access to a scan tool so haven't checked the codes yet but before I either book it into a mechanic or buy an inexpensive scan tool I have a couple of bits of information I would like to know:
1- is it normal to have to clear all engine codes after replacing the injectors?
2- Does it sound like an issue of just clearing engine/fuel faults because it thinks there's a problem at the moment?
3- I've had a good look at my work and I'm confident that I've refitted everything properly, but is there anything that stands out as having need to be checked.
4- Could the MAF have any influence?
I don't know why but I'm scared something found its way into the engine when I was mucking around with the injectors.
I'm about to start hunting for cheap scan tool that will work and be able to clear codes - any suggestions?
Thread Starter
Newbie
Joined: Aug 2018
Posts: 5
Likes: 0
W211
Well I got hold of a scan tool and cleared codes. There was a lot of them especially relating to misfire faults on every cylinder. I managed to clear them and the car seems to be running well. It took a few goes to clear the codes though as each time I cleared them it seemed to only permanently clear 2 at a time.
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
No problem bro.,
when you diagnose the car, which cyl. still misfiring..?,,
and did you check the Elc. current with every injector socket..??
-;-ZAYED-;-
when you diagnose the car, which cyl. still misfiring..?,,
and did you check the Elc. current with every injector socket..??
-;-ZAYED-;-
Thread Starter
Newbie
Joined: Aug 2018
Posts: 5
Likes: 0
W211
I didn't get as far as checking the elec current. I just started clearing codes to see what happened and each time I did it the engine got better. I just found it interesting that only 2 cylinders at a time would start working properly each time I cleared all the codes. The last 2 to clear were 5 & 6. Every cylinder was showing a misfire at some point.
MBWorld Fanatic!
Joined: Aug 2006
Posts: 7,053
Likes: 398
From: A.D., U.A.E
2000 (W202 C200) & 2000 (W202 C55)
While Engine running, try to unplug 5 & 6 injectors , and see how would Engine reacts,,
after that, unplug 5 & 6 coils, and see if any difference..!
-;-ZAYED-;-
after that, unplug 5 & 6 coils, and see if any difference..!
-;-ZAYED-;-
