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Author Topic: 1.6D NA Running poorly  (Read 1923 times)

May 30, 2018, 12:27:02 pm

Stu92

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1.6D NA Running poorly
« on: May 30, 2018, 12:27:02 pm »
Hi,

I'm hoping an expert on here might be able to help me with my problem.

I have a 1985 1.6D NA Van and can't get her to run tidy.

To get her to start I have to crank the engine for a long time, then to get her to idle I have to keep my foot on the accelerator for a long amount of time. Then even when she's idling she sounds quite rough with a lot of white smoke. Then if I hit the accelerator hard and let go it will stall.

I have good compression on all cylinders and have performed a leak down test which showed no issues.

I'm guessing injectors or pump but how would I diagnose?



Reply #1May 30, 2018, 04:18:00 pm

Tmarkle

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Re: 1.6D NA Running poorly
« Reply #1 on: May 30, 2018, 04:18:00 pm »
Is the timing set properly??


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1985 Jetta 1.6 NA, Project
1981 Rabbit 1.5 diesel SOLD
1980 Dasher, also a project
1993 Passat GLX VR6 (daily driver)
1992 Toyota Pickup, 350 V8 swapped
1997 Jetta TDI, engine donor for a diesel powered Toyota!
1986 Toyota Custom Cab

Reply #2May 30, 2018, 04:22:49 pm

Stu92

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Re: 1.6D NA Running poorly
« Reply #2 on: May 30, 2018, 04:22:49 pm »
Is the timing set properly??

Hi, I set it at 85 mm.

Reply #3May 30, 2018, 07:33:14 pm

sgnimj96

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Re: 1.6D NA Running poorly
« Reply #3 on: May 30, 2018, 07:33:14 pm »
If you're lucky it's just lack of fuel.     Put clear fuel line into and out of the pump, and report back.   
81 Scirocco 1.6D (conversion)    86 Gofl 1.6D      2003 Golf Tdi   1985 300TD

Reply #4May 30, 2018, 11:04:23 pm

ORCoaster

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Re: 1.6D NA Running poorly
« Reply #4 on: May 30, 2018, 11:04:23 pm »
You might put the timing up to 92 mm and see if that helps.  With the age that pump might be a bit worn and engine could use the advance of a few mm's. 

Actually it sounds like you need to do a retime, idle adjust and perhaps a fuel adjustment as well.

Basic Tune is all.


Reply #5May 31, 2018, 12:11:01 am

Tmarkle

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Re: 1.6D NA Running poorly
« Reply #5 on: May 31, 2018, 12:11:01 am »
I had a 1.5 that was running awful, took ORCoaster’s advice and gave the timing a good bump. It ran better than my 1.6! My pump was slightly modified, but the idea stands that these little diesels are very sensitive to timing.


Sent from my iPhone using Tapatalk
1985 Jetta 1.6 NA, Project
1981 Rabbit 1.5 diesel SOLD
1980 Dasher, also a project
1993 Passat GLX VR6 (daily driver)
1992 Toyota Pickup, 350 V8 swapped
1997 Jetta TDI, engine donor for a diesel powered Toyota!
1986 Toyota Custom Cab

Reply #6May 31, 2018, 01:15:36 am

libbydiesel

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Re: 1.6D NA Running poorly
« Reply #6 on: May 31, 2018, 01:15:36 am »
180° out of time?

Reply #7May 31, 2018, 04:03:24 pm

Stu92

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Re: 1.6D NA Running poorly
« Reply #7 on: May 31, 2018, 04:03:24 pm »
180° out of time?

Sorted, thanks! Injector pump was 180 out. I should have added this was after having the engine out for major surgery.

Just need a bit of fine tuning now I think since there is a slight knock.

 

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