Re: [T3] Compression Test Results on Nadine

["Jim Adney" <jadney@vwtype3.org>]

On 5 Jan 2002, at 0:23, veedub@apartment101.com wrote:

> DRY TEST (ran 3x @ 8 revs each)
> Cylinder No. 1 - 130#, 130#, 125#
> Cylinder No. 2 - 120#, 119#, 120#
> Cylinder No. 3 - 130#, 125#, 124#
> Cylinder No. 4 - 120#, 125#, 123#
> 
> (since Cylinders 2 and 4 were lower than 1 and 3, I ran a wet test on
> Cylinders 2 and 4):
> 
> WET TEST (ran 3x @ 8 revs each)
> Cylinder No. 2 - 119#, 120#, 120#
> Cylinder No. 4 - 120#, 120#, 120#
> 
> The plugs for Cylinders 1 and 3 were slightly tan, while the plugs for
> Cyl 2 was running rich, and 4 was slightly rich.

You've obviously done a good job here as your numbers are quite 
consistent. Your dry pressures were fine, so there was really no 
reason to do the wet ones, since the wet test is only to try to pin 
down the cause of a low pressure cylinder.

Sorry, I don't remember whether you have FI or carbs, but if this is 
carbs then I'd take apart the left one and look for a reason why that 
side was running rich. 

If this is 68 FI, check the ground wire for the right injectors and 
make sure that it is a good ground. The 68-9 injector grounds 
connect to screws on the heads and these loosen up with the temp 
cycling that the head does. VW fixed this in 70, but there are 
several rather easy things you can do if you wish.

-
*******************************
Jim Adney, jadney@vwtype3.org
Madison, Wisconsin, USA
*******************************

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