Volvo EC210C Engine Problem

[Tudur DAvies]

Hi,

Suspected injector failure on 2007 EC210C resulting in fuel in the oil, white smoke followed by engine hydrolocking on turn over.

Signs of engine oil in the coolant as well, so head has been removed to be tested along with injectors. Head, gasket and liners all seemed good in visual inspection.

Could the injector issue have somehow caused oil to enter coolant? Too much pressure in sump due to being filled with diesel? It all happened when restarting engine after changing attachments, a lot of white smoke, engine was stopped almost immediately.

Also would anyone have the tightening torque and sequence for the head bolts along with valve clearances?

Thanks

 

[funwithfuel]

There was a cross-contamination issue with that engine when used in the wheel loaders. Almost unheard of in excavators. That would lead back to the oil cooler, if it's what I'm thinking of.
Getting back to your initial concern, you changed attachments, and the engine began producing white smoke. You suspected injectors, please explain why. Did the engine still start at all prior to hydro-lock? I would be more inclined to condemn a head gasket or liner. Have you turned the engine by hand to inspect the liners for pitting and cavitation? How did the injector tips appear? Clean, sooted, broken, were they carboned up?

 

[Tudur DAvies]

Main reason for suspecting injectors is large volume of diesel in engine oil. Engine started, was switched off after approx 20 seconds after noticing white smoke. Locked up during cranking approx 5 mins later. Head gasket and liners look good. Engine turned easily by hand after removing head, honing marks still visible on liners top to bottom, no visible cracks. One injector was sooted, all looked intact. Exhaust manifold was wet with diesel in two ports after removing. Struggling to understand how oil got in the coolant, albeit not much, unless there is another issue. Suppose will know more after head has been pressure tested and injectors tested.

 

[funwithfuel]

If the engine ran, fuel didn't hydro-lock the engine. Make sure to inspect your head gasket. There's notches or dots by the part number. The notches are indicating the head gasket thickness to establish the injector tip to the piston crown relationship.

 

[funwithfuel]

Here are the torque specs. For when you're ready

 

[Tudur DAvies]

Hi,

Would anyone know what is included in the Volvo 'cylinder head kit'? Part number VOE15011854. Dealer aren't able to provide a breakdown of kit content. Does it include all gaskets and seals from bottom of head up? Exhaust manifold gaskets etc? And does it include replacement head bolts?

Thanks

 

[Txhayseed]

Don't see an injector causing that. If in injector was that bad you would have had noticeable performance issues and probably a few codes. Injection is the heart of modern diesels. Its monitored constantly. Almost any variation or deviation injector wise usually is picked up very quickly... Im with the other helpful posters. Head gasket or oil cooler. To hydro lock a cylinder that quickly makes me thing head gasket.

 

[Tudur DAvies]

Hi,

Had the injectors, oil cooler and head test results back. Injectors ok, oil cooler ok, head warped at cylinder no6. Current thinking is that engine was switched off when hot (had been working hard), head warped causing major leak at gasket. Possibly no visual signs of damage as engine only ran for less than a minute after the failure. Head has been skimmed and pressure tested, ready to go back on.
funwithfuel kindly provided the engine tightening torque, but the cylinder head torque and sequence is on a separate document. Would anyone be able to provide this? Also valve clearance specification?

Thanks

 

[Tudur DAvies]

Hi,

Struggling to find head bolt tightening torque and sequence if anyone can help?

Thanks

 

[funwithfuel]

Here ya go

 

[Tudur DAvies]

Thanks, do you have the correct torque settings as well. Believe it is step 1: 30Nm, Step 2;: 80Nm, Step3: 90 degrees. But would like to double check.

Thanks