1.6 TD läuft nicht richtig Einspritzpumpe einstellen | Posts 48+

I would like to express my sincere gratitude to everyone who has helped me here.

My Caddy passed the technical inspection (TÜV), the individual approval process, and the emissions test on the first try, even though the emissions test was quite something. With one more registration entry, the vehicle registration document would actually be three pages long.

I've already driven 1000 km and I think the car is fantastic. The engine performance has improved significantly in the first 200 km. Now, I think I just need to fine-tune the fuel injection system. It seems to be lacking power at higher RPMs. On the highway, I'm only reaching 155 km/h according to the speedometer, although the vehicle registration says it should be able to reach 169 km/h.

He smokes heavily, producing black smoke, when running on more than 70% throttle until the turbocharger kicks in, after which it clears up. I suspect there might be a problem with the Lambda sensor (LDA). The smoking is much more pronounced when the engine is cold compared to when it's warm.

I had to adjust the full-throttle screw for the TÜV inspection, turning it in so that the engine cuts off at 5000 RPM instead of 5700. However, it feels very restricted now and I could only barely reach 110 km/h. I suspect this adjustment might be the problem. But I don't want to turn the screw any further towards a higher setting. Even when idling with full throttle, the engine runs much too high according to the installed tachometer.

"I also have a problem where the engine speed is quite low when starting, and it sometimes runs unevenly during startup. After a few seconds of running, the engine speed then increases from 750 to around 950 RPM. However, it then maintains this level consistently."

So, I'm wondering if anyone has any advice for me on how to best adjust the pump, or where there might be another issue.

Hi!
Well, congratulations first of all!
Nice car... if I had the time and inclination... it might even appeal to me.

Is it registered as a truck?

Subject: Top Speed.
I can't help you with the pump.

First of all, I wouldn't stress too much about trying to reach that number (169) so desperately.
The car has a completely different aerodynamic profile compared to something like a Volkswagen Golf.

And then you can check if the correct gear is engaged.
At that time, it was like a modular system where you could combine all sorts of things together in any way you wanted.
That's happened to me before, with my old Volkswagen Golf TDI.
I installed a used transmission, but it was originally from a gasoline engine.
That was translated at a significantly higher level.
The car definitely had plenty of torque.
but it also didn't reach its top speed.

Hi there,
Do the injectors still have the poor spray pattern/tendency to drip that was described earlier? If so, you don't need to look any further. That will cause smoke.
Otherwise: Valve lift of 0.90 mm at TDC (Top Dead Center), new injection pressure of 163 bar, wear limit of 140 bar; boost pressure should become noticeable around 2500 rpm.
The fact that the smoke decreases with increasing boost pressure only indicates that the poorly or excessively injected fuel burns more completely when there is more air present.
hg
Herbert.

Also die pissenden düsen habe ich vor ewigkeiten schon ersetzt. Dabei habe ich neue düsen einsätze verbaut und den druck auf den wert eingestellt, der auf dem Gehäuse der düse stand. Ich My 155 bar.

I think the engine needs to be broken in first. The turbocharger is now building boost around 2500 RPM, and the smoking issue has been resolved since I turned the cone of the LDA (Load Dump Actuator) back to its stock position.

"It's burning much better now. There's a very slight gray puff of smoke during cold starts, and a small black puff when revving the engine while stationary. It doesn't produce any smoke during normal driving. However, it briefly smokes for a moment when you initially press the accelerator fully."

"Initially, the gearbox was actually the wrong one. I knew that too. It had a 5-speed transmission installed, which I believe is a 4-speed from a naturally aspirated diesel engine. This made it terrible to drive. At 100 km/h on the country road, you felt like you were already hitting the speed limiter. Currently, an ATH gearbox is installed, which is identical to the original 4-speed gearbox that came with the engine, except for the flange sizes of the driveshafts."

Otherwise, according to the speedometer, it now reaches its maximum speed. However, I think my intercooler is a huge problem. It's located in the engine compartment, just like the original one on a Golf 2 GTD, where the engine is mounted. But I'm missing the original air ducts.

When I drive with full throttle, it warms up quickly. The coolant temperature is just above the first mark above the middle line. Also, the oil temperature quickly rises towards 95 degrees Celsius, even though the outside temperature is between -5 and +5 degrees Celsius. You can also see how the intake air seems to get too warm when driving with full throttle for a longer period. It then starts emitting black smoke from the exhaust.

I'll probably fabricate an air duct for him soon and see if that solves the problem. I really want to keep the intercooler in the engine bay for aesthetic reasons. I think it looks great positioned above the transmission, even though I have enough space in the front, in front of the water pump.

Okay, here's a picture of the engine bay attached. I actually find it incredibly cramped. It's really not ideal for the intercooler. The huge battery is right in front of it, and where you see the windshield washer fluid reservoir in the picture, there's currently a Webasto Thermo Top C auxiliary heater installed because I had one lying around, and I thought it would be cool to have a standing heater in a 35-year-old Caddy. And yes, it's registered as a commercial vehicle (truck) without an "H" license plate. I highly doubt that it could get an "H" license plate with something like that installed, even though they were available from the factory on similar models of the T4.

Well, I'm definitely more than satisfied with the planter.