Torque 1.6 TD JR - Unsatisfactory

Hello!

"First of all... I've thoroughly used the forum's internal search and also Google, but I couldn't find any information about my problem."

I drive a Caddy 14d with a 1.6 TD engine from a Golf 2. I bought the Caddy already assembled, and from the beginning, I felt that the engine was a significant step backward in terms of torque compared to my previous 1.6 naturally aspirated diesel Caddy.
In some cases, for example, driving uphill is simply impossible due to a lack of power.

According to the former seller and my mechanic, the valve timing and fuel injection timing are correct. The boost pressure at full load is approximately 0.9 bar. There are no air bubbles in the diesel pre-supply line.

As mentioned before, I feel that my naturally aspirated diesel engine provided significantly more torque.
It can't just be due to a large turbocharger, right? The JR is supposed to be known for its high torque output.

I hope you can help me.

Thanks and regards.
Michl.

Hi,
What value is the start of the funding set to?
Sure, here is the translation of the text from German to English:

"vg" translates to "very good" in English.
Herbert.

Hello,

Without turbocharging, the otherwise very similar engines should produce identical torque. -> Check the start of fuel injection and the settings of the ESP (Electronic Stability Program).

I once drove a 1.6 diesel with an injection timing that was too late, and it wouldn't pull anything, no matter how cold it was.

Best regards, Rainer.

Hello,

Dieselcaddy wrote:

I drive a Caddy 14d with a 1.6 TD engine from a Golf2. I bought the Caddy already finished, and from the beginning, I felt that the engine was a complete step backward in terms of torque compared to my previous 1.6 naturally aspirated diesel Caddy. Teilweise ist z.B. eine Berganfahrt absolut unmöglich, da einfach die Kraft fehlt.

Check the flow rate setting and general pump settings. Where are you located? Someone nearby can probably help with that.

Quote:

Laut Aussagen des damaligen Verkäufers und auch meines Schraubers stimmen die Steuerzeiten und auch der Förderbeginn. Ladedruck liegt bei Volllast bei ca. 0,9bar. Dieselvorlauf ist blasenfrei.

"That's too high. Is the pressure relief valve venting? Is there any smoke? Has the hose to the LDA come loose? Is the membrane okay / is the cone moving freely? Is coolant present? Give me some more information, then I can provide a meaningful answer."

Quote:

As mentioned before, I feel that my naturally aspirated diesel engine provided significantly more torque. It can't just be due to a large turbocharger, right? The JR is supposed to be known for its high torque.

133 Nm = high torque?? It's all a matter of adjustment .

Best regards, Uli.

Well... unfortunately, I can't tell you which values were set.
The previous owner disassembled the engine and explicitly stated that he adjusted the pump using a measuring gauge.
If I've read my repair manual correctly, the value for the start of feed should be around 0.83-0.97mm, right?

My mechanic just told me that the value is correct again. Unfortunately, I don't know what the actual value is.


The boost pressure is read using an aftermarket boost gauge. It's an approximate value. The boost gauge also seems to be working correctly, at least I've tested it up to 2 bar.
The engine doesn't produce any smoke except during cold starts. The hoses are not loose.
Unfortunately, I don't know if the membrane is working properly or if the cone moves freely. How can I tell?
No LLM available.

"133Nm isn't much, but my engine definitely doesn't have that. I also have a tow hitch on my Caddy. But I don't even want to think about attaching a trailer to it, because the Caddy won't be able to pull it."

Hi,

Quote:

0.83-0.97mm

is somewhat acceptable. I would adjust it to 0.86-0.88 mm. Just as a reference, at around 0.82 mm, I experienced knocking and blue smoke on the engine. With 0.95 mm, it ran reluctantly at high RPM and under load.
hg
Herbert.

Hello,

Dieselcaddy wrote:

Well... unfortunately, I can't tell you which values were set. The previous owner had disassembled the engine and explicitly stated that he adjusted the pump using a gauge. Wenn ich in meinem Rep-Handbuch richtig gelesen habe, dann sollte der Wert des Förderbeginns bei ca. 0,83-0,97mm liegen oder?

Okay. But there's more you can adjust on an injection pump than just the start of fuel delivery, which is likely not the cause of your problem. If it were, you would have experienced symptoms like difficulty starting, smoke, misfiring, etc. If it doesn't produce any smoke at full throttle, it's clear that it's not pulling enough air. It's not getting enough fuel -> needs adjustment.
Therefore, I repeat my question: where are you approximately located? Since you apparently don't have any knowledge of this yourself, I would advise you to have someone else handle it. No, not the Bosch service, because they will say things like: "That's not possible," "That's not allowed," "The pump needs to be tested or replaced," etc.
Again: Is the LDA hose still connected? (That's the thin hose from the intake manifold to the top of the pump.)

Quote:

The boost pressure is read using an aftermarket boost gauge. It's an approximate value. The boost gauge also functions correctly. At least I have tested it up to 2 bar.

Der Ladedruck ist zu hoch für nen TD ohne LLK. Wenns kein Meßfehler ist, hat einer dran rumgedreht. NNormally, it is 0.7 bar.

Quote:

133Nm sind zwar nicht viel, aber die hat mein Motor definitiv nicht. Ich habe auch eine Anhängerkupplung am Caddy. Ich brauch aber gar nicht dran zu denken, da nen Hänger dran zu schnallen, da der Caddy den Hänger nicht ziehen wird.

Set.

Best regards, Uli.

Hi there,

Quote:

The engine produces no smoke except during cold starts.

indicates poor starting behavior. It shouldn't produce much or any smoke at all in that situation.
Could you find out when the drilling is scheduled to begin?
Nur zum Hinweis auf die Empfindlichkeit der ESP Einstellung: mein in der Signatur angegebener Passat 1,6 TD CY hatte anfangs (Neuwagen) extrem Blaurauch und Stottern beim Kaltstart, und dazu war er richtig lahm. Prüfung in der Werkstatt ergab leicht verstellte NW und ESP Hub unter 0,8mm bei OT. NW eingestellt und ESP auf 0,84mm Hub (war meine Erfahrung vom Golf 1 1,6D) - schon besser, aber noch nicht gut. Im nächsten Schritt ESP auf 0,88 mm Hub - Dampf war da, wo er anfangs im 5. The car struggled uphill, its engine straining as it pulled itself along.
In later adjustments, I tried even earlier ignition timing values, but around a valve lift of approximately 0.91 mm, it started to drone at high speeds on the highway and hesitated when accelerating.
Sure, here is the translation of the text from German to English:

"vg" translates to "very good" in English.
Herbert.

Thank you for the previous responses.

Next week, the Caddy is going to the workshop... I'll get back to you then.