Citroen Relay Running/Starting Problems

[Relay200798]

Hi, i bought a 2007 citroen relay 2.2 hdi with 135,000 miles on it with the chain driven ford engine and i have nothing but problems with it since.

Its hard to start in the morning or when hot and takes around 3 tries - 1st time it starts idles lumpy then cuts out - 2nd time it starts the engine light comes on it wont rev then it dies - 3rd time it starts idles lumpy engine light comes on then goes of after a few seconds then it idles right and you are able to rev it.

When trying to start it, it fires out a load of white smoke then when running its fires out a load of black smoke.

It keeps going in and out of limp mode and i don't think the turbo is kicking in properly as it has no power at times.

In high gear and low revs it pumps out a load of black smoke.

Now and then it starts pinking/knocking.

There is also a fairly load whistle when the turbo kicks in.

Removing/ unplugging the MAF sensor does nothing to how the engine runs.

I have fixed and removed a lot of fault codes but there is 4 that keep returning which are all to do with the MAF sensor.

I have replaced a load of parts, injectors, rail pressure sensor, air/oil filter, engine oil, glow plugs/relay, egr valve, MAF sensor.

The compression is 1-360psi 2-287psi - 3-284psi - 4-347psi

I have put fresh diesel in it with wynns diesel cleaner and now it pumps out loads of white/blue smoke.

I have cleaned out the inter cooler, injectors, inlet pressure sensor.

Any ideas on what it could be or what to check would be greatly appreciated as i am out of ideas, thanks.

[GiveMeABreak]

Can you post up your VIN - there are 3 versions of Relay and within each of those 20-30+ categories! It seems you've checked everything apart from the emissions control, but we need to know what system you have on the vehicle.

[Bick]

Those compression reading are on the low side!

The 2.2 are known for not being a great engine and it is not unknown for pistons to wear prematurely. You should do another compression check and do a dry and wet test to see if the compression improves.

[Relay200798]

Can you post up your VIN - there are 3 versions of Relay and within each of those 20-30+ categories! It seems you've checked everything apart from the emissions control, but we need to know what system you have on the vehicle.

The vin is - *VF7**************[VIN obfuscated, can be read by forum staff]*11141527 - Thanks.

[GiveMeABreak]

Ok, so it's the the Ford Turbo Diesel Puma 22DT 100 CV engine, with no particulate filter - just the EGR system.

Here's the EGR valve location and underneath in wider context, in case you want to check the condition: