Its been 3 months and I still haven't figured it out. Advanced help wanted! *SOLVED*
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From: Clifton, NJ
96 and 08 911 turbos
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From: Canada
07 E63 + 07 CLK63CAB
Do you have a code reader that will register throttle position %, if so hook up to the obd port , switch to live readout and monitor the % position when key on and the while cranking. Fuel pressure is good, now we need spark and the electronics to control, ie crank sensor, cam sensor, throttle sensor, you need MBtech support.
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From: Chicagoland
AMG
Just got done logging. Current codes again:
Fuel pressure:
Key on Engine off:
Here is after attempting to start it. Even after it stopped cranking, the engine remained at 105% load... Weird..
I also had an ASE Master tech look it over, and he says he would unbolt the exhaust or check for back pressure in the exhaust next. Let me know if there is anything else I can do to help you guys help me. Honestly, I would be screwed without this forum and the people on it, so thank you to everyone helping thus far!!
Fuel pressure:
Key on Engine off:
Here is after attempting to start it. Even after it stopped cranking, the engine remained at 105% load... Weird..
I also had an ASE Master tech look it over, and he says he would unbolt the exhaust or check for back pressure in the exhaust next. Let me know if there is anything else I can do to help you guys help me. Honestly, I would be screwed without this forum and the people on it, so thank you to everyone helping thus far!!
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Joined: Oct 2013
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2004 E55, 2003 IS300
does your supercharger spin freely? (the section directly after the clutch/ pulley). I watched your last cranking video and it soulds like its trying to start but it almsot sounds like something is really dragging down when cranking and holding back the engine. Ive seen a few cases where something inside the supercharger siezed and caused the engine to stall and not restart until the supercharger belt was removed.
Last edited by AMG55TECH; Nov 4, 2013 at 04:42 PM.
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2004 E55, 2003 IS300
There would have to be something physically dropped in the exhaust or shoved in there causing a complete blockage to be stoping the engine from starting at all. I'm not saying it's not possible... But very very unlikely... Unless you think someone is nasty enough to play that kind of prank on you
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From: Canada
07 E63 + 07 CLK63CAB
Why the 105% engine loading for starters, the other is with a plugged exhaust the car should still start when there is minimal pressure then stall out as back pressure increases. Other point is will the car run when the gas pedal is pushed down during start and short run episode?
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From: Canada
07 E63 + 07 CLK63CAB
Would not sand blast plugs, if any sand stay up inside of the plugs then it will get into the engine. Leave plugs out overnight, use a propane torch to just burn off, (use for seconds only) any fuel left or if feeling dangerous put them in the oven set at 150-200 degrees for 20 minutes. These plugs look really flooded or deposits inside of the engine have been washed and deposited on them. If you still have the old plugs put them back in and try a restart. Did you happen to get a throttle position % key on and when you depress the throttle does it change the %. Still think this is related, AMG55tech where are you!
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From: Chicagoland
AMG
All plugs are out and will be cleaned tomorrow. Here's a few pics of the plugs with the fuel dried off. Sure is a lot of junk on them considering how many miles are on them... 
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From: Canada
07 E63 + 07 CLK63CAB
Do you self a favour and just put new plugs into the engine. Those plugs look like they were used in a 72 vega that used 3 quarts of oil a day. This time go for NGK iridium as apparently your car does not like Bosch. Are these plugs of a colder value than stock?
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From: Canada
07 E63 + 07 CLK63CAB
Look up Sparkplugs.com for the proper plugs for your car. I have 2 63's so not familiar with what your 55 would take. \But 10 miles that is terrible. when you get this car running you need to go on a long drive down the highway to clean the engine out. You are getting close now.
