2017 sprinter 2.1 limp mode 165 thousand miles l

[Scoooby1989]

Van is going into limp mode.

Fault codes showing:

• P0263 Cylinder 1 contribution/balance

• P0266 Cylinder 2 contribution/balance

• P0272 Cylinder 4 contribution/balance

Coolant has a glitter/sparkly look in it. I tested with a magnet and it doesn’t stick, so thinking block sealer rad sealer may have been used by a previous owner.

Heaters are blowing out hot air, and the van starts and sounds completely normal with no obvious misfire. Idles smooth.

No injector knock or rough running, which is what’s confusing me given the balance codes.

Before I start throwing parts at it, has anyone seen this exact issue before or got advice on what to check first?

Any help appreciated

[E-bmw]

Is it possible to reset/recal injectors on those?

How difficult are the injectors to get at?

If it were me I would obviously be thinking either injectors or compression.

To try to eliminate injectors, can you get a new copper seal (assuming those use copper seals obvs.) and swap 3 for A.N Other and see what happens to the codes.

[stevieturbo]

VAG diagnostics offer info on injector flow that can help identify which injectors might be flowing more or less to assist with diagnosing a problem

I'd imagine the Merc stuff should do similar ? So look at the data for each

[Doesitdrive]

Scoooby1989 said:

Van is going into limp mode.

Fault codes showing:

P0263 Cylinder 1 contribution/balance

P0266 Cylinder 2 contribution/balance

P0272 Cylinder 4 contribution/balance

Coolant has a glitter/sparkly look in it. I tested with a magnet and it doesn t stick, so thinking block sealer rad sealer may have been used by a previous owner.

Heaters are blowing out hot air, and the van starts and sounds completely normal with no obvious misfire. Idles smooth.

No injector knock or rough running, which is what s confusing me given the balance codes.

Before I start throwing parts at it, has anyone seen this exact issue before or got advice on what to check first?

Any help appreciated

Given you think sealer has been added to coolant and that usually happens for head gasket failure, wouldn't it be wise to start with a compression test before the injectors ?

[E-bmw]

Doesitdrive said:

Scoooby1989 said:

Van is going into limp mode.

Fault codes showing:

P0263 Cylinder 1 contribution/balance

P0266 Cylinder 2 contribution/balance

P0272 Cylinder 4 contribution/balance

Coolant has a glitter/sparkly look in it. I tested with a magnet and it doesn t stick, so thinking block sealer rad sealer may have been used by a previous owner.

Heaters are blowing out hot air, and the van starts and sounds completely normal with no obvious misfire. Idles smooth.

No injector knock or rough running, which is what s confusing me given the balance codes.

Before I start throwing parts at it, has anyone seen this exact issue before or got advice on what to check first?

Any help appreciated

Given you think sealer has been added to coolant and that usually happens for head gasket failure, wouldn't it be wise to start with a compression test before the injectors ?

100% wouldn't be suggesting changing injectors at this point, hence why I said to swap if possible as if it stays the same then that helps point the compression diagnosis that I also mentioned.

Although, unless it was catastrophic (which would also be showing other symptoms) then it would be less likely to have lost compression on 3 cylinders with a CHG, but not beyond the realms of possibility obviously.