Hi All,

Scout 4X4 2009

Can I jerry-rig an extension tube onto the Oven Cleaner spray can, pull out the Lamba 1 (O2) sensor, and push the tube through that opening and squirt cleaner on to the inside of the turbo (exhaust side)?

What's the easiest way to get oven cleaner into the turbo area?

I have the BMM engine which has the inlet manifold, exhaust manifold and turbo all on the back of the engine against the firewall.

Thanks

Not sure but did read that its important not to use on alluminium compressor side as it tends to eat it. Think you can access via EGR pipe/down pipe but mine had an EGR cooler in the way and everything else!! so didnt want to risk it. If its a turbo problem I thought mine had stuck fins as it would go into limp mode but it was a sticking actuator that was causing over boost. Mine was a 1.9tdi bxe. If its stuck fins you could try some forte turbo cleaner additive and run it on a few tanks of supreme diesel to see if it makes a difference.

Alasdair

Thanks Alasdair, I have lubed and jerked the wastegate shaft many times cause the fix only lasts a week or so and it's not a good fix either. Guessing by the way the shaft feels the problem is in the turbo and not inside the wastegate.

Its a bigger job but it may be worth removing turbo and cleaning/inspecting on bench or source a decent second hand one. I would try some turbo fin cleaner plus super diesel first and see if it improves.

On 23/12/2025 at 19:56, Alasdair1 said:

Its a bigger job but it may be worth removing turbo and cleaning/inspecting on bench or source a decent second hand one. I would try some turbo fin cleaner plus super diesel first and see if it improves.

Thanks, I would love to but I have no place to work on it other than the side of the road and taking the turbo out on this is a massive job. Many people across the net have reported that oven cleaner works well, so on a car this age quick and easy is fine for me.