|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Engine flooded question..
|
|
02-03-2013, 10:02 AM | #1 |
Major
145
Rep 1,132
Posts |
Engine flooded question..
Back in the old days of carburetors ( and some fuel injection) cars would become flooded (with gas) and would not start, one remedy would be to hold the accelerator pedal to the floor while cranking the engine to clear out the fuel. My question is would this procedure work on a 2006 and newer BMW? I don't think it would because of valvetronic and stated so on another car forum and was attacked because they say im wrong........ am i wrong? I know this might be the wrong forum for this but no one ever reads anything in the N/A engine section.... LOL
|
02-03-2013, 10:04 AM | #2 |
Lieutenant
17
Rep 575
Posts |
Our accelerators are fly by wire, there is no hard connection to how your fuel is injected. Your ECU does all the thinking for you. whether or not you've got the pedal pegged or not won't do anything until after the vehicle has been started.
|
Appreciate
0
|
02-03-2013, 10:22 AM | #3 |
Major
145
Rep 1,132
Posts |
I know this, but some drive by wire cars will open the butterfly in the throttle body while the engine is cranking because of the signal it is receiving from the accelerator pedal sensor allowing air to enter the engine, they think BMW's operate on this theory but our cars don't use a conventional throttle body, valvetronic takes the place of the throttle body in allowing a metered amount of air to enter the engine. When we push on the accelerator pedal in our cars it actually controls the valvetrain and not the TB butterfly.
|
Appreciate
0
|
02-03-2013, 11:07 AM | #4 | |
General
17386
Rep 18,777
Posts |
Quote:
|
|
Appreciate
0
|
02-03-2013, 04:18 PM | #6 | |
Going Mach Chicken
4
Rep 92
Posts
Drives: e90 pre-LCI 335
Join Date: Jun 2012
Location: Denver, CO
|
Quote:
__________________
'07 335xi, Alpine White
| Cold, "Sport", and Luxury packages | Tinted | OEM Black Lines | JB4 | DCI | ER FMIC | Forge DV's | Custom exhaust with secondary cat delete, Magnaflow mufflers, black Dimisa Tips | Staggered 18" V718's, Matte Black | Flappy Paddles | Titanium CF Trim Wrap | BMW Performance Shifter and E-Brake Handle | |
|
Appreciate
0
|
02-03-2013, 11:10 PM | #8 |
Private
5
Rep 54
Posts |
You guys are thinking about it all wrong. The valvetronic motor is the throttle body(for all intensive purposes),the n52/k the throttle body is only for vacuum. It does not function as a traditional throttle body. To the OP's question if I get one that is all flooded out I hold it to the floor. Whether it really does anything. Idk but it does seem to clear them out faster.
|
Appreciate
0
|
02-03-2013, 11:14 PM | #9 | |
Major
145
Rep 1,132
Posts |
Quote:
i searched on the net and here and can't seem to find anything related to my question. |
|
Appreciate
0
|
02-03-2013, 11:18 PM | #10 | |
Private
5
Rep 54
Posts |
Quote:
|
|
Appreciate
0
|
02-04-2013, 04:59 AM | #11 |
Private
1
Rep 51
Posts |
You cannot flood a carb engine simply by holding the throttle open and cranking the starter. Carb engine's only flood due to incorrect setting of the metering needle or by the buffon behind the wheel stomping up and down on the accelerator pedal, actuating the accelerator pump in the carb, causing excess fuel to be delivered.
As EFI systems do not have an accelerator pump as such, you can't flood the engine unless there's something radically wrong with it. |
Appreciate
0
|
02-04-2013, 06:42 AM | #12 |
Captain
40
Rep 679
Posts |
would it help to remove the air filter while attempting the start? Im sure your air filter is fine, but might be worth a check...and it may let just a little more air in...
Also, you never know what you will find when you remove a few things off the top of the motor and visually and physically check all injector, fuel, air, and vacuum hoses, connectors, ect.... JP |
Appreciate
0
|
02-04-2013, 12:19 PM | #13 | |
First Lieutenant
40
Rep 373
Posts |
Quote:
On an EFI car, holding the pedal all the way down tells the ECU to not run the injectors at all to help with a flooded engine. |
|
Appreciate
0
|
10-08-2013, 01:07 AM | #14 |
Banned
152
Rep 2,638
Posts |
Bump. In desperate need. I was trying to crank the car after disconnecting the ECU and it wouldn't start. Someone told me the engine is probably flooded. Could that happen on an N52. From the sounds if you guys seem to be saying no.
|
Appreciate
0
|
10-08-2013, 01:18 AM | #15 |
First Lieutenant
10
Rep 375
Posts |
Why would this make you assume it is flooded? If you just had the ECU unplugged, and now it won't start, my guess off the top of my head would be something was not hooked up correctly and now you're lacking either fuel or spark.
|
Appreciate
0
|
10-08-2013, 08:23 AM | #16 | |
Banned
152
Rep 2,638
Posts |
Quote:
these are my codes DME,DME Number: 07602220 2A31,4,Valvetronic, eccentric shaft sensor: guide 2A32,4,Valvetronic, eccentric shaft sensor: reference 2CF9,1,Throttle-valve potentiometer 1 2CFA,2,Throttle-valve potentiometer 2 2A47,8,Valvetronic, eccentric shaft sensor: plausibility 2D09,4,Throttle valve 2A85,4,Exhaust VANOS, activation 2AA9,4,Variable intake system, servomotor 2: activation 2A9A,1,Camshaft sensor, inlet, signal 2E84,4,Electric coolant pump, communication Last edited by mapleridge; 10-08-2013 at 10:00 AM.. |
|
Appreciate
0
|
10-08-2013, 02:04 PM | #17 | |
First Lieutenant
10
Rep 375
Posts |
Quote:
Hard to say, but those codes are probably to do with you pulling pins out and messing around, so I would try clearing them. If you were just cranking and not starting, and you never pulled the fuel pump fuse, then yes you could be flooded. |
|
Appreciate
0
|
10-08-2013, 03:13 PM | #18 | |
Banned
152
Rep 2,638
Posts |
Quote:
I think the codes are from pulling the connector in the DME. I never touched the pins for those units. Aside from the throttle errors which are from resetting adaptations, I believe everything is on the same connector. X60007 which is the grey connector beside the one with the o2 sensor pins. I think the pins got bent and are not making contact. I can't make out any bent pins with my eyes. I sent it to the dealer. I don't think they are going to be able to figure it out. |
|
Appreciate
0
|
10-08-2013, 05:27 PM | #19 | |
First Lieutenant
10
Rep 375
Posts |
Quote:
|
|
Appreciate
0
|
10-08-2013, 07:01 PM | #20 | |
Banned
152
Rep 2,638
Posts |
Quote:
|
|
Appreciate
0
|
10-08-2013, 10:05 PM | #21 |
Banned
152
Rep 2,638
Posts |
Hold on.
Looking at the connectors on the DME and matching the codes to the pins I think were affecting, point to a connector I never unhooked even once. The connector A-C is one unit and I only removed B to install/uninstall the dp fix. From the codes I pulled most of the signals come from G and the throttle codes come from E. I don't see how I could have messed those up. |
Appreciate
0
|
10-08-2013, 10:13 PM | #22 | |
First Lieutenant
10
Rep 375
Posts |
Quote:
|
|
Appreciate
0
|
Bookmarks |
|
|