Does anyone know why the engine will not turn, hand cranking, after I removed the carbon from 4 of the intake runners. It is like it hits a hard stop and will not turn any further, I have not tried cranking with the starter, afraid it will damage the engine. I am sure there is no walnut media trapped in the cylinders as I have removed the injectors from the cylinders and can see there is no walnut shell in the cylinder. This is the 2011 BMW 335d. Thank you.
Pull all the plugs, and try to hand crank for a few turns.
No spark plugs, it is diesel.
Do you have a small camera or bore scope? I am thinking a chunk of carbon has gotten caught between the valve and the head, not allowing it to close all the way. Have a look at each intake valve, if you are not able to find anything, take a look at the where it the engine stops, for this can indicate which cylinder it is having problems with too.
Darin
Current:
16 220i Active Tourer Platinsilver MET (C08)/Dakota Black (PDSW), P7ACA, P7LDA, P7LHA, P9BDA, 6sp Manual - Wife's new toy!
05 325it Electric Red(438)/Gray(N6TT) ZCW, ZSP 5sp Manual Back set cover, trunk mat, Euro Infra-Rot front windshield, and mud flaps! Mr. Wagon My new Winter car.
05 M3 Imolarot II(405)/Gray(N5TT) ZCW, ZPP 6sp Manual C.F. Lip, CSL diffuser, SSK, Euro Infra-Rot front windshield and a trunk liner! Mr. Go_Fast Stored for the Winter
Past:
95 318is Montreal Blue Met (297)/Beige(K1SN) RIP, killed by an Idiot.
84 M535i gray market Burgandy Rot Met/Black Leather Lowered by Intrax on bilies, poly everywhere, B&B cat back system, K&N, and a hitch! Da Beast - Still running w/400k+!
91 316i euro Tizianrot/Gray cloth - E-36 w/M-40 RIP, but great on gas! Best was 38 MPG
82 528i euro Saphire Blue Met/Blue Leather RIP
79 525 euro Green/Green RIP
79 318 Silver/Black - The first one that got it all started
M-Flight Member
Second the camera if it was running before you did something during the repair
Then pull the glow plugs.
Also, with glow plugs pulled, crank over as far as you can, then back off, then crank, then back off, then crank. Keep doing it, and the blockage may break up.
Sounds like mechanical binding to me too. Hard to determine though without more detail regarding the carbon cleaning.
You could try spraying penetrating oil into each fuel injector gland and/or into the intake ports on the cylinder head cover, wait a couple hours and try to crank the engine by hand again.
But if there wasn't any walnut in the cylinder, maybe electrical? Have you tried putting the key into the ignition w/o starting, if so what displays on the instrument cluster? Maybe you activated the engine immobilizer/anti-theft system?
Bookmarks