Hello has anyone any ideas re what's wrong with my digger please?

[gemsie79]

Hello, please can anyone help me with this problem I have with our digger please. On top of two of the pistons is dry carbon, on top of one of the pistons is wet diesel. The machine starts, but it's misfiring, it doesn't operate, it cuts out. So far we have had the injectors reconditioned. We have had many mechanics to it and non of them come back to sort it. Any help or being pointed in the right direction or ideas would be fantastic. It is an old machine perhaps 20 years old. I will post a photo of I can work out how! TIA

 

[Bri963]

Hosing injector. Bad recon job.

 

[Diggerdavey]

Hello, please can anyone help me with this problem I have with our digger please. On top of two of the pistons is dry carbon, on top of one of the pistons is wet diesel. The machine starts, but it's misfiring, it doesn't operate, it cuts out. So far we have had the injectors reconditioned. We have had many mechanics to it and non of them come back to sort it. Any help or being pointed in the right direction or ideas would be fantastic. It is an old machine perhaps 20 years old. I will post a photo of I can work out how! TIA

Have you checked compressions?

 

[gemsie79]

Hello not yet but will do thank you

 

[V8Druid]

Hosing injector. Bad recon job.

or cracked piston - nadgered ring set ... how is the OP determining a wet cylinder / piston crown, I wonder ?

 

[Mick-the-fitter]

Have you cerackef an injector pipe when running? This will determine which cylinder is the problem! Have you checked tappets? Next job head off!

 

[Lancs Lad]

It sounds like you're dealing with a challenging issue with your digger. The presence of dry carbon on two pistons and wet diesel on one piston, combined with misfiring and cutting out, suggests a few potential problems. Here are some steps and ideas to consider:

Potential Causes and Solutions:​

1. Injector Issues:
   • Even though the injectors have been reconditioned, it's possible they are still not functioning properly. Consider having them tested again or replaced to ensure they are delivering fuel correctly.

OR

Compression Issues:

• The wet diesel on one piston could indicate a lack of compression in that cylinder, causing incomplete combustion. Perform a compression test on all cylinders to check for any discrepancies.

Awesome barbs tell us more. Where you from in Texas?

 

[Canal Navvy]

It's a better effort than "no s**t Sherlock" on the steel fabrication thread
The Chinese use anglicised names that we can remember the old fossils having when we where just kids