LawrieIbizaMk4's Ibiza Cupra TDi *Coilovers!*

[Phil_JJ]

You want to ask if he has had the fuel pipes off that run along the rocker cover and to the fuel filter, then back to the tank..

I had trouble with a Leon that had had a timing belt replaced, and they hadn't put the pipes to the correct places so after a bit it would run rough and eventually cut out..

 

[lawrieIbizaMk4]

He didn't touch them, doing a compression test tomorrow and replacing the MAF. Mechanic is convinced it isnt the injector seals

 

[vroomtshh]

No offence mate, but I'd recommend a new mechanic. It sounds to me very much like he's just guessing without doing any proper checking

 

[lawrieIbizaMk4]

No offence mate, but I'd recommend a new mechanic. It sounds to me very much like he's just guessing without doing any proper checking

Starting to feel the same myself tbh. He's pissing in the dark! Supplying and fitting the MAF for 80 and that's the genuine Bosch part an considering mine still has the 06 stamp on it it's overdue for replacing anyway

 

[vroomtshh]

Starting to feel the same myself tbh. He's pissing in the dark! Supplying and fitting the MAF for 80 and that's the genuine Bosch part an considering mine still has the 06 stamp on it it's overdue for replacing anyway

Replacing the MAF never does any harm (unless you get a knackered one - it does happen fairly regularly) but its probably £80 you don;t need to spend.

 

[lawrieIbizaMk4]

What would your thoughts be on where to start looking? Obviously the biggest clue will be given from the result of the compression test but I'm stumped ha

 

[vroomtshh]

What would your thoughts be on where to start looking? Obviously the biggest clue will be given from the result of the compression test but I'm stumped ha

I'm not sure. I haven't been following the thread 100%. What are the exact symptoms, when does it do it, how long has it been doing it etc.

 

[Joshh]

To see if mad is your issue, disconnect the electrical plug. Car will use default values and if it's that will be back up to speed

 

[vroomtshh]

To see if mad is your issue, disconnect the electrical plug. Car will use default values and if it's that will be back up to speed

This suggestion gets thrown about the internet all the time and its such a crap one.

If you want to know if the MAF is at fault, then you should log it properly, not guess by the 'seat of the pants - o meter'

 

[lawrieIbizaMk4]

I'm not sure. I haven't been following the thread 100%. What are the exact symptoms, when does it do it, how long has it been doing it etc.

Cam shaft, shell bearings, tappets all replaced, timing has been checked but it's running with less torque and I'm only seeing an average of 25mpg and 30mpg at a push. I've cleaned the MAF and checked all boost pipes (still boosting at normal pressure) turbo sounds ok and the idle is spot on as well as start up, starts first time every time. Oil has also been replaced with long life fully synthetic pd oil and oil filter ha been changed, oil level is also spot on

 

[vroomtshh]

Cam shaft, shell bearings, tappets all replaced, timing has been checked but it's running with less torque and I'm only seeing an average of 25mpg and 30mpg at a push. I've cleaned the MAF and checked all boost pipes (still boosting at normal pressure) turbo sounds ok and the idle is spot on as well as start up, starts first time every time. Oil has also been replaced with long life fully synthetic pd oil and oil filter ha been changed, oil level is also spot on

What was it doing that made you change the cam.

When you say torque is ok, are you going by how it feels?

So basically your getting bad economy but other than that its ok?

 

[lawrieIbizaMk4]

It was making a splashing noise through the inlet, my mechanic said there was 4-5mm play in 3 of the tappets and signs of wear on the shaft, torque isn't right from what I can feel, it's feeling laggy and less responsive through the range. The kit is a kolbenschmidt steel cam if that's relevant

 

[Phil_JJ]

Its not a kit for a lesser specced 1.9 is it?

 

[vroomtshh]

It was making a splashing noise through the inlet, my mechanic said there was 4-5mm play in 3 of the tappets and signs of wear on the shaft, torque isn't right from what I can feel, it's feeling laggy and less responsive through the range. The kit is a kolbenschmidt steel cam if that's relevant

The cam shouldn't matter. I'd maybe get someone else to check the timing. Won;t be expensive to just have it checked.

 

[Blanco92]

On the MAF thing, dad's just changed the MAF on his T5 as it was down on power, running rich, juddering, smoking like a train etc. Disconnected the MAF and ran better but still not perfect. Decided to change the MAF at a cost of £120 and guess what... new MAF on and problem remains.

Don't think the MAF will be the issue Lawrie...

What Dad has found is his intercooler seems to have blown and has a hole in it, so he's getting a new one. Maybe you could check yours? Any big oily patches on it and it's knackered.

 

[vroomtshh]

On the MAF thing, dad's just changed the MAF on his T5 as it was down on power, running rich, juddering, smoking like a train etc. Disconnected the MAF and ran better but still not perfect. Decided to change the MAF at a cost of £120 and guess what... new MAF on and problem remains.

Don't think the MAF will be the issue Lawrie...

What Dad has found is his intercooler seems to have blown and has a hole in it, so he's getting a new one. Maybe you could check yours? Any big oily patches on it and it's knackered.

If you disconnect the MAF, and your car runs better, theres something wrong with the car.

When he changed the MAF, did he run it for a while before deciding it was no different. Without an ECU reset, they take a few hundred miles to work properly.

I would reckon Lawries intercooler IS leaking from pictures I've seen but if its holding the same boost as it was before, that shouldn;t really be the problem

 

[lawrieIbizaMk4]

My intercooler is a bit caked but it's still boosting at normal pressure so it can't be affecting it too badly? I think il go with the MAF change anyway as this ones now approaching 6 years old so no harm in it

 

[Blanco92]

If you disconnect the MAF, and your car runs better, theres something wrong with the car.

When he changed the MAF, did he run it for a while before deciding it was no different. Without an ECU reset, they take a few hundred miles to work properly.

I would reckon Lawries intercooler IS leaking from pictures I've seen but if its holding the same boost as it was before, that shouldn;t really be the problem

He ran it for a day, approx 60 miles, and reset the fault codes with VCDS (from unplugging it). At no point has it ever shown fault codes, that's why we thought it could be the MAF, as more often than not they don't leave fault codes behind when they fail.

It idles fine and revs fine on idle, it's only when it's moving that the problem arises.

My intercooler is a bit caked but it's still boosting at normal pressure so it can't be affecting it too badly? I think il go with the MAF change anyway as this ones now approaching 6 years old so no harm in it

Caked in dirt and general grime is fine, but I don't think it's right to be oily on it's exterior...

 

[vroomtshh]

He ran it for a day, approx 60 miles, and reset the fault codes with VCDS (from unplugging it). At no point has it ever shown fault codes, that's why we thought it could be the MAF, as more often than not they don't leave fault codes behind when they fail.

It idles fine and revs fine on idle, it's only when it's moving that the problem arises.

Caked in dirt and general grime is fine, but I don't think it's right to be oily on it's exterior...

60 miles probably isn;t enough for the ECU to adapt tbh. Not saying its def the fault though.

Its easy to log MAF and find out for definite if its at fault.

 

[Blanco92]

60 miles probably isn;t enough for the ECU to adapt tbh. Not saying its def the fault though.

Its easy to log MAF and find out for definite if its at fault.

I know how to log the MAF, if it wasn't for being halfway across the world I'd do it for him. But if the intercooler he's getting doesn't sort it, I'll somehow get him to do a log.

Either way, the cooler has quite an obvious leak, so it's going to need replacement anyway.