After a full service, my Vectra 1.8 vvt running lumpy.

[Vwdub2000]

Vacuum leak on the brake servo than weird that shouldn't cause an irratic idle it would cause a non assisted brake pedal pressure though

Yeah it cause both but I have just changed to zimmermann brakes. I was focusing on one problem when they were both related.

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[Vwdub2000]

It would, it’s allowing air in from the wrong way and it’s also unmetered. It would also tie in with the lambs sensor fault as the ecu would be struggling to achieve the correct fuelling.

It was a fun couple of days now brakes are nice but my radiator is mess up MOT tomorrow

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[northpole]

It was a fun couple of days now brakes are nice but my radiator is mess up MOT tomorrow

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If you would've said you had sponge brakes too you would've gotten told to check the vacuum line to the servo too... would've saved you a long winded search.... but I do remember you got told check the vacuum lines also as at first we thought it was the pcv valve...

[Vwdub2000]

If you would've said you had sponge brakes too you would've gotten told to check the vacuum line to the servo too... would've saved you a long winded search.... but I do remember you got told check the vacuum lines also as at first we thought it was the pcv valve...

My brakes weren't spongy at all they stop easily just firm. I did check and clean the valve. It was the hardline from the brake servo.

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[Dog_Book]

To be fair, they are a ******* to spot splits like that. Its not like you can squeeze them and they open up. I bet the engine was sucking in so much air it still created a vacuum around that area so still giving the servo some draw.

[northpole]

I know they are hardliners and a serious pita to check.. at least you found it. Just a shame you have dented the new radiator... as long as it doesn't leak.... well erm suck it up and put the car through the MOT.

[Vwdub2000]

To be fair, they are a ******* to spot splits like that. Its not like you can squeeze them and they open up. I bet the engine was sucking in so much air it still created a vacuum around that area so still giving the servo some draw.

I was spraying electronic contact cleaner and found it.

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[Vwdub2000]

I know they are hardliners and a serious pita to check.. at least you found it. Just a shame you have dented the new radiator... as long as it doesn't leak.... well erm suck it up and put the car through the MOT.

It was lucky escape definitely. Not leaking and I am not hurt, it is a blessing. Yes Mot booked for 9 tomorrow

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[troutybrown]

If you would've said you had sponge brakes too you would've gotten told to check the vacuum line to the servo too... would've saved you a long winded search.... but I do remember you got told check the vacuum lines also as at first we thought it was the pcv valve...

If its on pipe before non return valve then it wouldn't affect the brakes.

[northpole]

If its on pipe before non return valve then it wouldn't affect the brakes.

that is why he had no spongy brakes