mTDI won't run, possibly flywheel issue?

[snakemaster]

i have never had any prob with a good idi starter on a tdi.
as for the pump timing mark the pump and pump bracket and move the pump to advance the timing 1mm , and try to start if nothing move 1mm more , you get the drift , the mark on the pump is so you no how much you have moved it or if you have to put it back to what it was

[monkey magic]

Cheers, that's good to know about the starter.

Re timing, the LR IP pump case wasn't on slots, it just had holes in, so I had to make slots on the mount bracket. I'm at the maximum advance these will give me, which is at 1mm, so I need to take it off and open them up some more. I still expected it would run at 1mm, but if I make this right it rules out one more thing that might be stopping me running.

I have to make a pulley puller now as i gave back the borrowed puller i used in the first place  :cry:

[Tintin]

The 250RPM cranking have nothing to do with M-TDI, It's only a ECU software issue and only with hot engine, but really easy to solve if needed.

[Rub87]

If you take a OEM AHU with stock injector bodies/nozzles, I experienced that optimal static timing is at 0.78mm which put it close to the green line on vagcom

I can't be the too light flywheel.. my new built has a +- 5kg flywheel, 17:1 CR, unchecked timing, and unconnected glowplugs and it starts right up at 0°C

[monkey magic]

@ Tintin, thanks, I now know 1st hand that is correct.

@ Rub87, I had a hell of a lot of metal removed from the flywheel, I was paranoid that this could be the main problem. Re timing, it is a mechanical pump, and I have had to match the timing to the pumps own spec, rather than the engine.

Anyway,

I got the engine to run tonight

As i'm sure most people following this thread thought, it was all down to the timing.

With a sound TDC, I set the IP timing to within 0.02mm of what i think it should be, and it ran almost straight away, tickover was a little lumpy, but engine built revs nice and quickly, no glow plugs, and mega light flywheel.

Thanks to everybody who chipped in here with advice, knowledge and suggestions.

I'll post up again when the engine is installed and the bus is a runner.

Monkey Phil