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General VW Discussion This is a place for General VW topics (the company, not your vehicle). General topics about a specific vehicle should be posted in the General TDI Dicussion Forum sections for that vehicle platform. A4, A3 & B4, B5, etc.

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Old June 5th, 2003, 19:07   #1
Frank M
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Default Trivia Question #8

After a vehicle is parked overnight and then started in the morning, the engine has a lifter noise that disappears after runnig a short while. The most likely cause would be:

1: low oil pressure
2: low oil level
3: a worn lifter bottom
4: excessive lifter leakdown

only one is correct
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Old June 5th, 2003, 19:12   #2
Hyates
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Default Trivia Question #8

I hate being first...

#4. Excessive lifter leakdown

That's my guess.

Harry.
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Old June 5th, 2003, 19:22   #3
TurbineTech
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Default Trivia Question #8

Someone just told me that this was normal and that they all do it- do I or do I not have a problem (send me a private message if you don't want to give the answer away)
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Old June 6th, 2003, 03:49   #4
runonbeer
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Default Trivia Question #8

using the wrong oil
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Old June 6th, 2003, 04:26   #5
weedeater
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Default Trivia Question #8

5. it's a VW.
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Old June 6th, 2003, 05:55   #6
jjvincent
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Default Trivia Question #8

Definitely #5. Anyone with any experience with VW's knows this one. There are a few fixes that work pretty well too. Take the lifters out, soak them in a parts cleaner overnight, blow them out soak them again and then blow them out. This can help about 50% of the time on higher mileage cars that haven't had too many oil changes over the years.

While were on the subjsct of noises in VW motors. Here's one:

The engine makes a knocking noise while the engine is idling. Upon increasing the engine speed the knocking goes away but comes back when the engine hits a steady speed. What's causing the knocking noise? (Hint: VW and Audi had this problem in the 1980's)

1. Rod bearing too large in diameter
2. Main bearing too large in diameter
3. Piston too small in diameter
4. Wrist pin too small in diameter

Only one was correct and VW/Audi had a fix for this too.
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Old June 6th, 2003, 06:26   #7
Judson
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Default Trivia Question #8

Gads, you always list ones which I've never experienced.
OK, usually it's oil that's too thin for the temps.
Or, the oil pressure relief valve is "missing" in your
cheap-ass Fram oil filter.

Either way, it's oil not getting to the lifters. Some
hydraulic lifter designs, I believe, are made to "trap"
the oil so are startup they aren't starved. If you
blow smoke first thing in the morning too, or after
sitting for a period of time, this can be oil leaking
by the valve stem seals.

Hmmm. I'll just pick #1, 'cause I have no idea what they're
getting at. Too little info for me.

Jud.
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Old June 6th, 2003, 06:29   #8
Judson
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Default Trivia Question #8

Wrist pins. Audi 2.0 litre block only, though, for
very late 80s (like in the Audi 80).

They didn't put the 2.0 litres into the VWs until
the 90s.

Gads I hope my memory serves me here.

Jud.
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Old June 6th, 2003, 07:06   #9
jjvincent
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Default Trivia Question #8

This affected the 1.8 motors too.

The problem that you seen with the VW lifters, was that they wouldn't "trap" the oil any more. Just take an old one and squeeze it. A good one will not leak oil out of it and a bad one will.
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Old June 6th, 2003, 14:09   #10
Judson
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Default Trivia Question #8

It did? I never read about the 1.8 having problems.
Wait, do you mean the early 1.8 16V Hecho en Mexico
ones?

Jud.
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Old June 6th, 2003, 14:34   #11
jjvincent
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Default Trivia Question #8

No, the whole slew of Audi 4000's from about 1985 to 1987. They all had the 1.8 motor in them. Plus they were made in Germany.
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Old June 8th, 2003, 15:38   #12
Frank M
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Default Trivia Question #8

correct answer is #4.
a worn lifter bottom, low oil or oil pressure would affect the lifter all the time.

BTW. I have heard this lifter noise is very common on later model MB's.(late '80's to early 90') A guy I know puts in Mobil 1 and finds after 20k miles or so the problem is gone away..
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