This guide is relating to “Spill pipes” or Leak off pipes” which when defective cause poor or no starting on Vauxhall DTI engines. This is a very common fault and should be one of the first areas to look at when the DTI refuses to start. It is also the cheapest place to start as new leak off pipe costs around £2.99 from most motor factors.
The most common problems with the EGR system is a faulty EGR valve and carbon deposits restricting the EGR flow. The EGR valve needs to tested. The EGR cooler and passages need to be checked for carbon buildup and restrictions. It's easy to test an elecrtonically-controlled ERG valve with a scan tool: when the EGR valve is commanded OPEN on a
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