Kaltstartproplem beim 1Z nicht gelöst *heul* | Posts 48+

@uwe

Really? You're so lucky!

My car's engine has a slight issue when it's 0 degrees Celsius (32 Fahrenheit), and it sputters for about 5 seconds. But I think that's probably normal.

Okay, I don't know about everyone else, but my Rumblepack (Ruckel-Zuckel-Schnarch-1Z) also starts up really well. This morning at -14°C: After about 5 seconds, the preheating light went off, I turned the key, and the engine started immediately without any hesitation.

Would anyone like to trade 'super responsiveness' for 'standard engine power'?

@docsnyder

with pre-glow, my Rumblepack (Ruckel-Zuckel-Schnarch-1Z) starts perfectly! I turned the key twice with pre-glow on, and there it was! And that was at -15 degrees Celsius this morning! But it started at 0 degrees without pre-glow! And I think we all struggled to start it a little bit then.

Bertil wrote:

"Yes, the TDI glow plugs activate, but only until the engine exceeds 2500 RPM for the first time, or after a certain amount of time has passed..."

Hi Bertil!

"That is to say, Ulf's test using the direct cable connected to the glow plugs only works if I keep the cable connected for a while after starting the engine -> essentially, allowing it to continue glowing?"


Best regards, Christian.

haehnlein wrote:

der Test von Ulf mit dem Direktkabel zu den Glühkerzen funktioniert nur dann, wenn ich das Kabel nach dem Start noch eine Weile dranhalte->nachglühen!?

Hi Christian,

That's not quite right either: Pre-glow is for quick starting, and Post-glow is for smooth engine running, less smoke, and reduced knocking after a cold start.

Okay, hold the probe lead against the battery, start it after about 4 seconds, and disconnect it again after about 1 minute.

Or, after the initial start, reduce the power and, if necessary, reapply it to study the running behavior with and without afterglow .

Hi!

Question for the experts:

I've heard rumors that the engine might pre-glow even when you just unlock the car. Is there any truth to that? It would explain a lot if that process isn't working correctly.

Best regards,
Uwe

Hi,

@Uwe:
Basically yes, but...
That was probably only the case with the Whirlpool 1.9 models.
Not with TDI.

Uwe wrote:

I've heard rumors that the engine might pre-glow even when you just unlock the car. Is there any truth to that? It would explain a lot if that process isn't working correctly.

Hi!

Well that would be great -> in my area, I never close early, so there's no need for a pre-warm-up .

@Ulf:

Unfortunately, the adapter is still not finished, and due to the cold weather, the preheating test cannot be performed ("freezing"). However, this test is likely very informative enough to determine whether or not the vehicle has ESP (Electronic Stability Program).

Best regards, Christian.

Hi,

No, it wasn't quite like that.
There was probably a door contact switch. If the door is closed after being opened, it lights up 'as a precaution.' I'm quite sure that's what it was. For example, in a Golf 3 TD with a 75 hp engine.

haehnlein wrote:

Dieser Test ist aber bestimmt so aussagekräftig, dass man sagen kann ESP or not ESP!!!!!

Hi Christian,

If one wants to be extremely thorough, one would have to check each individual glow plug with a headlight bulb as a "meter" to ensure normal power consumption (because "new" does not necessarily mean "working" ).

And if the glow test doesn't bring any improvement, you have actually only proven that the problem is not related to the heating system.
Other things like temperature sensors, etc., would still need to be checked.

Hi,

'I'm experiencing similar issues with the cold temperatures. Until yesterday, I had to preheat it for a long time three times (without the interior light dimming!), then crank it for 2-3 times, and only then would it start, filling the car with smoke.'

Aber heute ging Nichts. habe lange georgelt 3 Pausen eingelegt bis Batterie fast zu Ende war. Bin dann mit der Bahn gefahren.

Couldn't you just pour hot or at least warm water over the glow plugs to make them a little warmer? Would that damage anything?

What should be the cable thickness when pre-heating with a cable manually? And where exactly do I connect it? To the positive battery terminal, and where exactly at the spark plugs?

My 1.9 TDI 1Z engine is otherwise running great. It now has 210,000 km on the clock, but I'm not going to replace the injectors or glow plugs just because it sometimes struggles to start in extremely cold weather. How often should glow plugs actually be replaced, and is a torque wrench absolutely necessary?

@ 1881!

This morning, we had -13 degrees Celsius here in the Taunus mountains (brrr). How was it for you in Berlin? Do you already have winter diesel in your tank? Given your mileage and approximate year of manufacture, I assume you don't drive much, so it might be a while since you last filled up...

Best regards,
Uwe

Hi!

1881 wrote:

(without dimming the interior light!)

Then it won't glow! Check the fuse and the glow plugs (use a test lamp, or even better, use Ulf's halogen lamp test!).

1881 wrote:

Könnte man nicht einfach heißes oder zumindest warmes Wasser auf die Glühkerzen schütten, so dass die zumindest ein wenig wärmer werden? Kann man damit etwas kaputt machen.

That won't do anything!!! A heater is better... but the glow plugs only cost 40 euros, right?

1881 wrote:

Wie dick sollte das Kabel sein wenn man manuell mit Kabel vorglüht? Und wo genau schließe ich an. Batterie + Pol und wo genau bei den Kerzen?

Connect at least a cable as thick as those used for electric cookers or heat guns (-> I believe it needs to handle at least 10 amps per glow plug in a TDI, and 20 amps in a TD). Connect to the positive terminal of the battery. Only connect to the top of the glow plug (up to the insulator!) otherwise it won't work and you could damage your battery!

1881 wrote:

Wie oft sollte man die Glühkerzen eigentlich wechseln und braucht man unbedingt ein Drehmomentschlüssel?

Absolutely! 15 Nm of torque! Spray with rust remover before removing, and it's best to remove it when the engine is warm -> I once had two damaged threads that were cold-welded together -> Get rid of Zyko!!!

Regarding durability: In my case, they were completely broken after 174,000 km! My father's still had the original ones at 260,000 km and they are still working!! It depends on the number of cold starts in low temperatures!

Best regards, Christian.

Uwe wrote:

Do you already have winter diesel in the tank? Best regards, Uwe

.

Hi Uwe!

Jetzt wird`s verrückt->vielleicht ist das die Lösung für mein Kaltstartproblem??

I at least filled up the tank at a Shell station at the end of September, and since then it's been sitting for a few weeks, and it won't even start!

This morning I started my father's car (1Z, 260,000 km, with new injectors, and -10°C temperature) without preheating.
Der hat zwar etwas georgelt und ist dann mit Rauchwolken angesprungen, aber die Rauchwolken waren eher bläulich und nicht schneeweiß wie bei mir!!!

Best regards, Christian.

Heute Morgen hatten wir auch so -13 Grad und Winterdiesel habe ich glaube ich auch nicht drin. Hab noch Sprit von Belgien drin, da es dort so schön billig (74ct) war, habe sogar den Entlüftungstank vollgemacht. Dann nochmal in Bonn ca. 10 l an ner Freien-Tanke nachgetankt. Und damit dümpel ich hier in BErlin hin und her. Fahrtstrecke ca. 7km. Ist jetzt bei der Reserve. Fahr das Auto auch ohne Tankverschluss, da ich den zuletzt an ner Tanke vergessen habe.

Should I try the winter blend from ARAL? Does it really contain any additives, or what's the best way to refuel next time? Should I put in 1 liter of regular gasoline and then fill up with diesel?

'Where exactly is the safety strip located? Does it require any disassembly to access? I've never seen one before. And what is the part number of the glow plug relay?'

I prefer to manually pre-ignite the fuel rather than risk something going wrong.

So, we were up at 5 AM today and had -16 things.

It started after preheating, and it appeared on one of the initial compression strokes! No grinding noises! Maybe it's due to the winter diesel fuel, but more likely it's the glow plug system. If I don't preheat in these temperatures, starting the engine becomes quite an experience! Try doing the glow plug test according to ULF! It can be done in 5 minutes with 4 glow plugs! That way you'll know for sure whether the problem is related to the glow plugs or not.