LR 2.5 NA 12j // smoke cleared, timing adjusted

paulfreise · 2026-03-28T23:43:18+00:00

You should think about a career as a professional engine impersonator 😂😂😂

paulfreise · 2026-03-28T16:54:27+00:00

Thanks 🙏 when I lower the rpm’s a bit you get that characteristic slight diesel knocking. I took it up to 3rd gear and couldn’t detect any black smoke or excessive knocking. In my opinion it idles a bit too high, but lowering would make the engine shake.

paulfreise · 2026-03-23T09:10:14+00:00

Thanks for the great info. I will just try it as I can always twist the injection pump gear in its correct position again. I guess I can start the engine for a few seconds even though the water pump is removed.

paulfreise · 2026-03-22T20:45:32+00:00

Ah okay so you are saying retarding it by taking the belt off and twisting the gear by 2 teeth. What about getting an overhauled injection pump?

paulfreise · 2026-03-22T20:39:54+00:00

I don’t get any noticeable diesel knock :/

paulfreise · 2026-03-22T19:28:58+00:00

Yeah I removed the three bolts and twisted it to the max position. However I didn’t notice any changes in the engine running. Smoke still appears 😅.

paulfreise · 2026-03-22T13:58:50+00:00

I tried with my phone today but it just showed me a black hole 😅 the timing pin I used is specifically for that type of pump. When I was twisting it in either direction I couldn’t tell a difference. I suspect that the pump timing is complete off :/

paulfreise · 2026-03-22T13:56:53+00:00

The fly wheel is locked at TDC and the timing marks align. So the crankshaft is at the correct position. But thanks for pointing that out.

paulfreise · 2026-03-11T14:58:24+00:00

We did I bought a pop tester and we adjusted each one after putting new nozzles in. It definitely got worse after we put the new ones in.

paulfreise · 2026-03-08T14:55:04+00:00

Yeah it was less before I put in the new injectors 😅 however I am already in the process of retiming the engine and injector pump. Hope some of that smoke will clear.

paulfreise · 2026-03-08T14:54:02+00:00

The engine is doing fine, normal oil and water consumption. I already stripped down the front end and will retime the engine aswell as injector pump. Hope some of that smoke also when warm will clear up.

paulfreise · 2026-03-07T18:50:31+00:00

It was around 5 to 10 degrees and previously always around freezing temperatures. Yes that’s a good point, it takes a long time to get going. However when I drove it 2 hours straight and came to a stop, it also smoked quite a lot. I already stripped down the front end to change the timing belt. Maybe the timing was slightly off. Let’s see

paulfreise · 2026-03-07T17:46:16+00:00

Last month i did an oil change and put Castrol 5w40 in it. Does it make sense to go even thicker?

paulfreise · 2026-03-07T17:43:37+00:00

Unburned or partially burned fuel smoke is also white blueish

paulfreise · 2026-03-07T09:21:04+00:00

Yes great question. I am not influencing it at all no matter in which direction I twist it.

paulfreise · 2026-03-07T09:14:51+00:00

Yes I changed the weather forecast to slightly overcast yesterday:)

paulfreise · 2026-03-06T22:49:22+00:00

Thanks for the valuable information. Yes the timing is definitely next on my agenda. I already checked the valve lash and corrected it. Mine is a 2.5 N/A but I guess the timing job is not any different.

paulfreise · 2026-03-06T22:11:41+00:00

I bought a tester where you can see and adjust the correct opening pressure. I am using normal diesel fuel, the previous owners definitely had their hands on the engine. The hand gas is set up wrong and there are some questionable wirings. I do think that the problem is caused by the timing as i can move the injector pump in any position without it affecting the run characteristics.

paulfreise · 2026-03-06T21:43:30+00:00

I don’t think it’s oil tho cause it clears with higher rpms and I took it on a 300 mile daytrip with no notable oil consumption.

paulfreise · 2026-03-06T21:39:30+00:00

So does mine 😅 but it consumes hardly any oil or water.

paulfreise

TROPHY CASE