Join Date: Mar 2012
Location: Nassau County New york
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2004 Audi A4 V6 3.0L engine timing
I loosened and removed the timing belt in my 2004 Audi A4 V6 3.0L engine without locking the cams, As result, I lost the original position of the cams. Could anybody pretty please, tell me the correct procedure in setting the timing in this engine? Or how do I index this V6 3.0 engine? I am a mechanic good with tools but don't know much about Audi cars.
I followed the Bentley service manual procedure in replacing the timing belt step by step and used all the required tools.
1. I placed the crankshaft to TDC by aligning the marking on vibration damper with lower timing belt plastic cover. At this point the #3 cylinder was at TDC. I locked the crankshaft using T-40026 tool.
2. I set the cams on #3 cylinder (at the passenger side of the engine) upwards facing each others by approximately 45 degrees and then lock these cams with one of the T-40030 tool.
3. I set the cams on #5 cylinder (at the driver side of the engine) downwards facing each others by approximately 45 degrees and then lock these cams with the other T-40030 tools.
4. Installed all four camshaft sprockets loosely and tight there bolts mildly and installed the timing belt. Followed, the tensioning the timing belt installation instructions in the Bentley service manual.
5. Removed all the tools and rotated the crankshaft few times everything seemed okay.
6. Attached radiator hoses, put antifreeze, installed spark plugs, coils and the battery
But, after I started the engine, the engine was idling rough and stalling. Obviously the engine did not run well.
then I processed to check the compression of the cylinders and discovered, cylinders; 4, 5, 3, below the normal pressure of 9 bar. I am in process of removing the cylinder heads of the engine waiting to receive the head cylinder socket tool number T10070 I purchase this item from ebay for $32 which I thought was too much money for a socket wrench. when I open the heads I most likely would see some valves out of adjustment of bent I know of an machine shop in Copague Long Island that would repair heads for $340 a head I hope I get luck this time!!!!!!
Last edited by fmontazeme; 04-05-2012 at 01:15 PM.
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