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(Help)SL55 Blowing white smoke and missfiring
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Hate to be the bearer of bad news but you will need a replacement engine. Seem this a lot.
Detonation has caused damage. What mods do you have? |
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All the symptoms you have described leads to engine failure.
Put the car back to stock if you want the warranty company to investigate the claim. |
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White smoke is usually indicative of a failed head gasket, that allowing engine coolant to leak into the combustion chamber. :(
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But what if im not loosing any coolant.
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What mods are done to it?? Tune?
And by the way....You better delete post # 5. Know what I'm saying? |
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Originally Posted by Bkelly08
(Post 7126186)
The mods are in post#3. And yea most def. Will be deleted.
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I don't know how these ECUs are set up, but in some cars, once modded half throttle pulls can be dangerous as the car has advanced timing and still is out of power enrichment. You could have been using half throttle but the engine was at 15:1 A/F and more than WOT timing, with no power enrichment. It feels strong but it's not safe, and can burn pistons/valves easily during extended operation. Sounds like you damaged something and are pulling oil into the misfiring cylinders. Compression test would be my next suggestion.
That's why I always prefer a good street tune over a dyno or flash tune, you can expose the car to all parts of the tables and tune accordingly. |
[QUOTE=ItalianJoe1;7126699]I don't know how these ECUs are set up, but in some cars, once modded half throttle pulls can be dangerous as the car has advanced timing and still is out of power enrichment.
Very true and learned this the other day. I have no tune and it still happened. Got out of the throttle just a hair and AFR jumped to 17.1...to the floor again and drops to 10.5. Wont be doing that again unless down shifting or no load on engine. |
This is what I think happened
He had the notorious hiccup lean condition happen and popped a cyl or two. Same thing basically happened to denroll because he also was on half throttle but went lean and popped, he had no afr gauge at the time or else I believe he would have saved his motor. Tuners do not tune for half throttle. This lean condition (hiccup) affects some ecus and is not year related either. For some reason the ecu flips to a map that Makes the motor go lean |
Hey guys. Do you think that this could be the case of a stuck fuel injector on those cylinders. If so. Anyone have any suggestions on how to check for this?
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Originally Posted by Bkelly08
(Post 7126101)
[h1] (Help)SL55 Blowing white smoke and missfiring
There was no tip on one of the plugs in cyl 2 Sorry for your loss, sounds like disassembly and rebuild or replace with a known good motor is due You can check for a stuck injectors by swapping with a known good set or just swapping suspect injector for another known good faultless injector. Let me know if you want to throw me a deposit and I will mail you a known good set that came out of my car |
Originally Posted by Bkelly08
(Post 7127069)
Hey guys. Do you think that this could be the case of a stuck fuel injector on those cylinders. If so. Anyone have any suggestions on how to check for this?
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You were throwing massive amounts of boost at this car with no fueling mods nor cooling. You were not logging either. It was a matter of time. Sometimes I wish these guys who sell parts tell their customers that they need supporting mods!
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Hey guys. I got the turge tank off. Seem to be a little pooling of oil in cyl2 and just a tad bit in cyl 3. Does not look to have any coolant or fuel mixed in. Its believed to be only oil. Im not a mechanic. What exactly does this mean? Possible valve cover gasket? Or do i sound stupid.
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Originally Posted by Bkelly08
(Post 7127229)
Seem to be a little pooling of oil in cyl2 and just a tad bit in cyl 3. ....What exactly does this mean? Possible valve cover gasket? Or do i sound stupid.
That blew compression on Cyl 2 and it appears #3 has a similar issue; oil is getting by and you need a new motor, rebuild yours or get a used one... Other's have said the same thing... sorry we all have bad news Valve cover gasket would just piss oil all down the side of the motor... NOT inside Next build add more fuel, meth and cooling mods to stave off detonation and be on par to keep your motor and investment safe |
That sucks. Anyone have a diy on such a tremendous task?
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Originally Posted by Bkelly08
(Post 7127244)
That sucks. Anyone have a diy on such a tremendous task?
If you are even considering this, you should be able to look in the engine bay and see what needs to be done to remove the motor and trans.... Things are way too complicated and the space is too tight on this engine bay to attempt this chore even with mechanical experience points |
With all the ABC components on the R230 chassis good luck
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Originally Posted by Bkelly08
(Post 7126101)
(Help)SL55 Blowing white smoke and missfiringHey guys. My SL55 has been giving me issues the past couple days. Omw back frm the track i gave her about half throttle on the highway up to about 120mph. Then the check eng light came on. Pulled over and noticed that it was missfiring. I limped her back home and decided to look at her the next morning because it was already dark. I pulled 3 codes. Cyl 1 missfire, Cyl 2 missfire, and The random cyl missfire code. I swapped the coils for cyl 1 and 2 with cyl 3 and 4. And still said 1&2 were missfiring. Not only were they still missing but the car was now blowing clouds of white smoke out the pipes. I then took out the spark plugs on the left side and ALL 8 were horrible. There was no tip on one of the plugs in cyl 2. I will post pix. So i bought new plugs for the entire left side and replaced them. I used NGK IRIDIUMS. Starter her up and again, still missing on cyl 1&2. And still blowing clouds of white smoke. I then checked the coolant level. It was and still is normal. No oil that i can see in the reservoir either. There is also a little of the white smoke coming from the engine bay. But not much. Could be the wind blowing the exhaust under the car. Could be an exhausr leak. Idk. The clouds get more intense with more throttle. I hadnt taken it anywhere yet to have it diagnosed because i plan on purchasing a warranty and waiting the trial period, then as they say ( fake ) a breakdown. Just incase its serious. But if you guys have any insight to what may be going on without taking it in. That would be great.Thanks. |
What does that mean? Making you look good? Lol
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Originally Posted by SICAMG
(Post 7126182)
What mods are done to it?? Tune?
And by the way....You better delete post # 5. Know what I'm saying? Not smart putting that in writing and with your hometown showing |
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