300tdi compression testing

Rorie said:

I got a compression test kit from Fourby. It states to remove glow plug and insert dummy.

Reading the workshop manual it says to remove the injector and fit dummy injector.

Can either method work? Is one better than the other?

How do you fit the dummy injector? I couldn't work out what to do with them - the actual injector doesn't have any threads holding it in place (just the clamp), but the dummy injectors seem to be threaded....

Click to expand...

Rorie said:

Thanks.

Any hints on how to put in the dummy injector if I go that route?

Click to expand...

Scooby22 said:

And if you have a TD5 they only have 4 glow plugs but five cylinders.

Click to expand...

Rorie said:

300tdi.

My understanding of the Fourby kit was that it came with the correct dummy parts

Its got a 114mm dummy injector, 64mm and a 75mm. But they are all threaded one end with the gauge push fit at the other, so i dont understand how to install these

Click to expand...

jamesmartin said:

what is wrong with the glow plug adapter

Click to expand...

Rorie said:

I just like to know my options I can use the glow plug adaptor, but as I already pulled an injector I wanted to use that

Click to expand...

Rorie said:

@jamesmartin thanks. I tested via the glow plugs and got values of 420 to 440psi. Seems a bit high as the manual suggests around 360.
Are my figures a concern?

Click to expand...