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99' C43 AMG's ongoing saga
hello all, I'm a long time MB owner and used to post a fair bit here last time I had a 190D 2.5Turbo 5MT but since lost that accounts login, figure its better to start fresh anyways.
let me get down to my issue here: the car is a 1999 C43 AMG. 102k miles the problem: the person I bought it from (also the person I sold it to years ago) was driving down the street, and the car started to smoke out of the exhaust and it lost a lot of power, so they brought it in to a local not qualified shop who quoted about $8k in work which summed up to 8 new coils, 16 iridium plugs, new plug wires, injectors, cats, o2s the works. the codes I pulled from it when I got it home were Cyl 1, 2, 3, 4 and random miss-fire and 4 02 codes. what I did then was order 4 coil packs, and I gutted all 4 cats, inserted some anti-foulers and re-assembled. I pulled the passenger plugs and 2, 3, 4 looked a little wet, so I left them out, pulled the fuel pump fuse, and cranked it for a sec to make sure they weren't just biblically flooded. I left it sit for about 3 days, put the plugs back in, fuse back in the FP, cranked it and it runs just the same as it did before, definitely not idling smoothly, not sure how many cylinders its running on. anywhere from 4 to 7 is my guess. a small amount of very fuelly smelling smoke comes out in puffs with the regular exhaust, which seems to be contained to the RH bank. I have excellent compression on 1, 2, 3 and 4. like I said brand new coils on that bank I still pull either 1, 2, 3 and 4 or just 2, 3, 4 miss-fire codes. the o2 codes are gone, as is the random miss-fire. I am just at a complete loss. I am here asking for advice and direction on this project as I'm starting to lose hope. Other random things I have observed are: 1.) no oil in the coolant 2.) no coolant in the oil 3.) the drivers cats looked fine when I gutted them 4.) the pass. pre-cat was black front-to back. the rear chamber of the front cat broke apart and clogged the front of the back converter, I pulled melted ceramic out of it. now all 4 are completely gutted and re-installed. 5.) car has platinum, not iridium plugs thats about all I know right now -- if you need any more specific info, do let me know and I'll do my best. |
Does your car have 2 MAFs, one per bank?
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I believe there to just be a single MAF at the back near the firewall like the E430/ML430 etc
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Answer
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BOSCH Air Mass Meter,W0133-1601501 - PeachParts . |
All that work for a bad MAF.....sorry. :D
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are you quite serious? haha
why only RH bank miss-fires? I'll order up a MAF and see whats what |
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what about just 3 miss codes that I pulled after I gutted cats and replaced coils? |
FYI
The random miss codes and/or O2 codes are the only symptom of a failing Mass Air Flow Sensor.
The mass air flow sensor is a fairly common issue. |
fair enough, have a new MAF on order, we'll see if that fixes anything.
certainly easier than swapping all of the fuel injectors. Thanks! i'll report back once its in. |
swapped in the New MAF. runs pretty well, drives decently -- no real concerns with how it drives, but I am still getting:
Cylinder 2 Missfire Cylinder 3 Missfire Random Cylinder Miss-fire no o2 codes, no other miss fires, etc. when I drive the car, it spews white fuel smoke when I get on it, just idling, it definitely has white smoke coming out in puffs, but not much. fuel injectors? bad spark plugs? something wrong with the DME sending signals? thanks guys! |
I forgot to mention, when I started it initially, it didnt throw a CEL at idle, only when I put it in gear and set off.
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anyone?
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Hmm
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Please post your VIN# so I can access more vehicle specific data. |
yep I cleared codes. I'll grab the VIN next time I am at home its just not handy at the moment, unfortunately.
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OK
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WDBHA33G0XF847066
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I guess I can check the engine ground.
is it possible that its something more along the lines of a fuel injector, or even spark problem? |
also, is that K40 in the back left of the engine compartment? any way to check its condition before ordering a replacement?
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alright, I guess I'll buy one of those next, haha.
Fingers crossed. thanks for the help :) |
well, back to square one. that didnt solve it :/
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no other points of interest?
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:'(
poor C43 |
I ordered a fuel rail and injectors out of desperation.
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got my replacement AMG Bosch III EV6s with rail late last week, here are some pictures fresh out of my ultrasonic cleaning session. new baskets, spacers, top and bottom o rings and top & bottom spacers on order. fingers crossed hard this works.
https://lh4.googleusercontent.com/-F...25252B0000.jpg https://lh4.googleusercontent.com/-m...25252B0000.jpg |
well, a little update here. got the rebuild kits.
pulled the old filter baskets out of the injectors https://lh5.googleusercontent.com/-h...0/IMG_4923.jpg popped in the new ones with some effort https://lh6.googleusercontent.com/--...0/IMG_4922.jpg then replaced all the o rings, and pintle caps https://lh6.googleusercontent.com/-Y...0/IMG_4925.JPG voila, a nice and clean set of AMG EV6 greenies! cant wait to try em out. https://lh4.googleusercontent.com/-d...0/IMG_4924.JPG |
Keep us posted. If it doesn't work, I recommend a compression check next to help isolate what's going on with cyls 2 and 3.
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it was fuel injectors.
pulled the car out of storage, running like a dump, swapped in my used but rebuilt EV6 greenies and she fired right up, purrs like a large growly cat. all fixed. fuel injectors took a dump at 105k miles for those reading this thread in the future with a similar set of problems! |
gives me a reason to again buy a ultrasonic cleaner.. i never ended up buying one, cause the only thing i thought i'd clean is the injectors.. what else are you cleaning?
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just injectors, really. :) lots of people clean jewelry. |
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