Hi Guys, just a quick question.

 

Does this tandem Pump look like it's leaking and also, what does the pipe at the back do??

 

Is it for the brakes or fuel?

 

Thanks in advance,

Tom

Also seeing as I'm asking stuff, does this egr pipe look shot to you, I'm guessing this would be a slight boost leak considering the external soot build up??

The tandem pump supplies fuel and vacuum, hence tandem, because it does two things at once.

3 minutes ago, sepulchrave said:

The tandem pump supplies fuel and vacuum, hence tandem, because it does two things at once.

So does that mean that the pipe to the rear of the tandem pump is coated In leaking fuel perhaps?

Looks more like oil though...

38 minutes ago, sepulchrave said:

Looks more like oil though...

 

Yeah it could be. But where could that of come from though? the tandem pump doesn't have oil in it does it?

59 minutes ago, Tomjones1995 said:

 

Yeah it could be. But where could that of come from though? the tandem pump doesn't have oil in it does it?

 

Yes it does, it's mechanically connected to the cam drive so it also gets oil fed from the cylinder head, doesn't look like its leaking much, I'd just clean everything up then monitor the leakage.

Sorry to be a pain but does anybody know whether '100.0' for the MAP (kPa) is correct for idle?

 

I've checked it with the obd2 device and when I rev in neutral it jumps to 155-120 kPa? And I thought the number is supposed to drop when you open the throttle, not increase

 

Any help if advice would be greatly appreciated

 

Tom

This is a diesel engine so no throttle, 100 kpa is 1 bar or 1 ATM which is correct.

120 to 155 kpa shows turbo boost.

 

What's not to like?

16 minutes ago, sepulchrave said:

This is a diesel engine so no throttle, 100 kpa is 1 bar or 1 ATM which is correct.

120 to 155 kpa shows turbo boost.

 

What's not to like?

Nothing I guess.

 

I'd researched online and aparantly the kPa numbers drop the more you floor it, but as you explained, that's not the case

 

Thanks for the explanation and help 👍

 

 

On 12/08/2021 at 16:39, Tomjones1995 said:

Also seeing as I'm asking stuff, does this egr pipe look shot to you, I'm guessing this would be a slight boost leak considering the external soot build up??

I know this isn't the best picture, but does anybody know the part no or the name of this top boost pipe please? The boost leak is progressing and it needs replacing asap.

 

Thanks in advance,

Tom

I've been looking but struggling to find it. The number is usually stamped into the plastic.

Maybe one of them on here?....

 

https://volkswagen.7zap.com/en/rdw/polo+derby+vento-ind/po/2005-253/1/145-145045/

 

 

Edited 20 August, 20214 yr by TMB

Thinking it might be item 7 in the above diagram but not 100% sure.

1 hour ago, TMB said:

Thinking it might be item 7 in the above diagram but not 100% sure.

Yeah I think it's no 7 too. It looks to be the right pipe shape. Thanks for taking the time to look that up for me 👍

1 hour ago, Tomjones1995 said:

Thanks for taking the time to look that up for me 👍

 

No probs at all