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Drove it to the Netherlands and back - runs a treat when it's going. But, the hot start issue remains despite new crank and cam position sensors. Leak off next when I get some time.

Still grumpy about starting. Symptoms are different now the air leak has been cured. Hot: lots of cranking, eventually struggles to life Cold: starts immediately I've just swapped out the crank position sensor and the cam position sensors. Might be too early to tell but a test start wasn't...

Well, you're not wrong, swapping it out didn't make any difference. However, I have found my air leak. It's getting in at the pressure test point that tees off on the line between the LP and HP pumps. That test point looks like it's a simple syringe arrangement; Mercedes must have a special...

Lift pump swapped. Mag coupling to camshaft - clever - no snapping shafts if it jams. All primed up and running. The old pump did seem to have a decent suck when turned by hand, but that was with liquid in it - when dry I could blow backwards through it which doesn't seem ideal. Didn't try...

Interesting we find ourselves in a similar boat with this one. Here's my thread: https://forums.mercedesclub.org.uk/index.php?threads/ml270-struggling-to-start.195531

Yes it's too early, no EOBD. I have a iCarsoft MB V2.0 that does most stuff including transmission, but unfortunately there does not appear to be any live data from the ECU.

OM612 with cam driven gear lift pump before the main high pressure pump. I can't monitor the rail pressure, unfortunately. Took it for a spin this evening to get it hot, and when it came back it would immediately struggle to restart the moment the engine was stopped without a lot of cranking...

So here's where I'm at: It has on-and-off taken a fair bit of cranking to get started, this is intermittent and getting worse. I replaced all the fuel pipes with fresh ones and fresh clamps. There is no evidence of air bubbles in the clear pipes between the low pressure lift pump and the high...

Over three years and 6500l of biodiesel later and she's still going. Started struggling to start over the last few months, the fuel lines have been slowly turning to paste and must have let air in while parked, which needed cranking through to start. Replaced today, but I thought I'd share how...

It's such an easy mistake to make getting the two fittings the wrong way around I'm surprised they didn't adds extra "splines" in the top of the connector fittings such that they would interfere with the clamp if they were the wrong way around - it would be so easy to do. Now I have a cable tie...

I also discovered today that if you're lazy, and don't bother refitting the vacuum pump (removed for access to the injection pump) thinking "I'll just see if it starts" that there is a perfect jet of oil that emerges from the hole in the engine where the vacuum pump goes, because that's its oil...

Hi dieselman I just saw your post on my profile but I'll reply here as well in case you miss my reply: Here are the menu options the MB2.0 gives for your car, so it may depend when in 1997 it was built: If you go down the "up to 02/1997" route it just presents scan options, "as of 03/1997"...

Those white washers degraded further, I've had to make some new ones out of some kind of foamed sheet a friend gave me that seems biodiesel proof. Time and engine temp will tell. On yet another cycle of injection pump rebuilds, this time my rebuilt pump would not start the car and I had to...

I had an old Mitsubishi where I drained the sump only, refilled, ran for two weeks and repeated - a majority change of the fluid. But back then ATF was a lot cheaper! Fortunately on the w163 there's a very accessible union on the ATF return from the cooler, so could do a "proper" change (which I...

What year is it? Mine is 2003 and not EOBD, standard readers can't find anything. I was left to believe only Star would connect, bit fortunately the MB2.0 does everything and without it only a dealer or specialist would have been able to reset the code that had locked the box in 2nd. I tried...

I think I've had low ATF level for a while thanks to the pilot bushing leaking, I'm sure this has resulted in lack of lubrication and wear. And the fluid was in a terrible state which cannot have helped. The magnetic catcher grid at the bottom of the sump was overloaded with fine metal and the...

Thank you for the photos, and actually that's a really good idea, I wish I'd have thought to take some photos of the dipstick end when the sump was off - it would give a really good idea of what the fluid level is supposed to cover. My sump gasket leak is now fixed and it's running brilliantly...

Wow, his loom is awful. Fortunately no such fraying on mine. Still behaving itself so just need to fix the weep of ATF it has from the sump seal and I think I'm good - fingers crossed!

Ah good tips from both of you, and on the checking the temp via diagnostics to be sure. Well I've put some in and *touch wood* it hasn't misbehaved since. Which is tempting fate, I know. Perhaps when an air bubble gets pulled through the valve block bad things happen. I was also wondering...

Good question - I think the spec for the box is MBZ 236.10. I used Mannol AG52 which is MBZ 236.10/236.11. It is the red you would normally associate with ATF. But the problems were like this before changing the ATF so I'm not to worried on that front. It is quite possible that by filling the...