gm73

The car was getting me down a bit this week as there was hesitation in 2nd and 3rd, vibration in the cab from an uneven idle and the issues on start up. I was messing about with the pipes and took the one pictured off and put it on again and everything has went back to normal. The car is responsive and you can’t even hear it running. No idea what I’ve done, perhaps cleared an airlock or in typical mechanic fashion they’ve maybe not put the pipe back on again properly and there’s been an air leak. Thank goodness for that.

The mechanic is currently stumped as to why there’s excessive suction. You’d hope he’s checked the breather pipe but you never know. I’ll take it off and have a check myself.

Small update. Spent today driving it and it’s certainly not 100% as it’s hunting on start up before settling down and there’s a bit of additional vibration in the cab at idle. (There always was a bit but it’s worse). There’s also a bit of a whistle noise which would certainly indicate a leak somewhere, possibly the intake manifold which may be causing the excessive suction in the crankcase. Here’s what it’s doing on start up

It's probably a taxi. My 2020 1.5 TSI petrol does 30k a year.

Just back from the garage. Full boroscope inspection done and a wisp of oil in cylinders 1 and 3. Everything as normal otherwise, no scoring. Also compression test done and only cylinder 3 was slightly down but still within tolerance. Small amount of oil in turbo intake pipe but turbo boosting properly. Mechanic says there is excessive suction at the PCV despite a new one being fitted and he can't get his head around it. He's phoning a VAG specialist friend tomorrow for his opinion on where to start with that. He says that is where the oil consumption will be happening. New spark plugs fitted and the car seems to be driving better than before. He says the ones in the car were well past their replacement due date. They were only 60k miles old as well!!!! So hopefully it's not piston rings or turbo.

My 175k 2020 1.5 TSI broke down on Friday. The AA bloke got it going by cleaning the number 1 spark plug of oil and using easy start but it was running rough and I left it with my mechanic. I had various codes for P0087 - Fuel rail/System pressure too low P0171 - System too lean (Bank 1) and one for seized coolant pump B I thought the codes pointed towards a failed fuel pump but since the plugs had oil I think now it points towards a poor fuel/air ratio. There had been a bit of oil consumption recently so I replaced the PCV which didn't solve it. So now I'm thinking either turbo seals as there's a fair amount of oil in the pipework piston rings which are notorious on these engines valve stem seals Does anyone have any experience of similar. If it's the turbo it is fixable but piston rings mean it's a goner.

2020 Octavia 1.5 TSI 167k Hi, can anyone help at all? I've replaced my PCV valve twice as I was advised it was faulty due to excessive vacuum and oil consumption. Firstly with a Febi part and then a VAG part. It still seems to have excessive vacuum despite using an original part (£121 from Volkswagen) in case the Febi one was substandard or faulty. Is it supposed to be like this or is there some other possible cause of the vacuum like a manifold intake leak? Any thoughts would be welcome as I'm at the end of my tether with it. Thanks.r

Bit of a Hail Mary here but over the past 18 months I've been getting an occasional P014800 (fuel delivery error) in the morning when starting the car, lumpy idle etc. Retarting immediately clears it. I always suspected that there is something wrong with either the in tank fuel pump (it's noisy - buzzes quite a lot) or the high pressure fuel pump as the car can feel underpowered at times and acceleration can be uneven. I clear the code and it maybe does it once a week. Now I have a P02D300 (cylinder 4 fuel Injector Offset Learning At Max Limit) fault code. The car still drives exactly as before so that's what has raised my suspicions. Can the injector issue possibly be caused by fuel delivery issues before I go and spend £££££s on a new injector? And is there a way to test fuel pressure with a Carista or do I need VCDS so I can check this. Thanks everyone.

Hi there. It's still doing it occasionally after all this time so I've just ignored it. The snake oil did quieten down the engine rattle I had which was dirty injectors.

A long shot I suppose but has anyone had four injectors replaced on a 1.5 TSI at the Skoda dealer and what was the cost? The reason why I ask abut dealer costs is that they offer a six month payment plan for high cost repairs. I paid for my timing belt through this method at Henry's Skoda in Glasgow.

I totally understand the logic of getting 4 done at the same time with regards to removing the inlet manifold. But it’s a taxi and it’s just a question of cash flow unfortunately.

Thanks. Car’s performance doesn’t seem to be affected tbh. And as for new injectors I just don’t have the cash for a set of 4. It will need to be one at a time and possibly used or reconditioned.

Getting this fault code on my 1.5 TSI. Car drives normally and when I clear the code it stays off for some time. It first happened yesterday and I put in Morrisons Super unleaded then mixed it with BP ultimate a short time later. Could it be this or is it just a failing injector? Car is on 162k. I've put in Archoil petrol synthesis cleaner and will fill with Shell V Power.

The matrix the matrix was changed which improved things a bit heat wise but when load was reduced the air turned cold even at the highest setting. Water pump was then changed and everything was sorted.

This one. The one driven off the cam with the solenoid and thermostat built in.