[Vwdiesel] vw turbo recall? 1.8T
Tony and Lillie
tonyandlillie1 at earthlink.net
Mon Dec 27 14:54:17 PST 2010
Brian, I didn't know VW made a 2.0 20V in the states, what did it come from?
The 2.0 TFSI engines are 16 valve, as the Direct Injection required
replacing one of the valves with an injector. They couldn't find sufficient
room for DI and 5 valves per cylinder.
As to the 1.8T problem. Yes, It is a huge problem. Rarely have I worked on
any VAG product with a 1.8T that doesn't have some evidence of sludge. And,
let me clarify that term as well. The "sludge" that is a problem in these
engines isn't the molasses like substance that used to collect in engines in
the past. Rather, it's more like carbon particles, almost like grains of
sand. They get stuck in the screen of the pickup tube and slowly block off
the oil supply to the engine. I recommend to everyone with one of them to
pull the pan and clean it at about 80k. It is more of a problem with the
Audi A4's and VW Passats because of the engine placement. The Longitudinal
placement necessitates a smaller oil pan, as it has to clear the subframe.
So, they have more problems, and yet are much more difficult to pull the pan
down from. But, if I owned one, I'd definitely be dropping the pan by 80k.
I'd also run synthetic and change the oil every 5k max.
The other thing that is a problem in these cars is that people are not
taught proper cool down procedures by most salesmen. If you run a turbo
hard, you need to give it an idle period afterward. Otherwise, the oil
basically cooks in the turbo, and that's where the carbon particles can form
as well. The smaller the turbo is (and it's very small on the 1.8T's) the
more critical this becomes. A good Idle period is about 2 min, BTW.
As for bent valves, I mostly see the hydraulic tensioners loose their
pressure, and of course the belt jumps and bends valves. I've seen them go
as early as 82k, and as long as 107k. I've never seen one that was run
longer than that on a 1.8T. I would only go 60k if it was my car. In fact, I
won't go longer than 60k on anything that is a valve bender.
The water pumps do have some issues as well, as mentioned. The other thing
they do is the plastic impeller expands over time off the shaft and no
longer spins. If you ever see one that overheats in minutes, that will be
why. You can check it by pulling the thermostat and feeling into where the
Oh, and I'd love to see a pickup with a 1.8T or 2.0T. That would be fun and
practical!! Mostly fun, though ;-)
----- Original Message -----
Subject: Re: [Vwdiesel] vw turbo recall? 1.8T
> Hi Matt;
> I have a friend that has a foreign car garage and does VW, Audi,
> Jaguar, BMW, etc. Seems they find the weak point on the 1.8 T is the water
> pump that adjusts the timing belt. People tend to change the belt and use
> the old pump and then end up with many bent valves when the water pump
> fails. On another thought I have a VW 2.0 20 valve turbo engine here with
> perfect block and 12 bent valves because the car owner didn't change the
> belt at the recommended time. 140,000+ miles and 12 bent valves. I haven't
> decided what to do with the engine yet. Perhaps I will put it in one of my
> 1981 VW Rabbit pickups.
> Brian Decker
> Western Washington
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