Possible Purge Valve Problem. I am currently experiencing problems with my astra mk4 z16xe engine. I have recently replaced the timing belt and tensioners, it was running fine immediately after this was done, then the idle has got progressively worse, getting quite rough. After about 250 miles the engine conked out when i put the clutch in. 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. Various factors can cause engine misfires, including: Problems with fuel injectors. An aged or faulty EGR Valve. Engine knock or rattle. Issues with your turbocharger. An apparent lack of power or loss of power is another symptom that could accompany the check engine light with the Vauxhall Mokka 1.6 CDTi. P0101 MAF Range/performance. 61 plate Insignia 1.8 (A18XER). Lack of power, no EML, starts OK but takes 5 seconds or so when cold to idle correctly. Only fault code is P0101 which clears but comes back as pending after a short run. No difference with MAF plugged in or not. Latest 2016 Vauxhall Insignia Problems. 1. response. EGR valve flow. Engine management light goes on and then off reporting EGR flow, can stay on for a minute or several days and only persistent in hot weather. EGR valve replaced and link pipe cleaned which solved the 2016 Vauxhall Insignia 1.6 SRI TDI Estate. Thought this may be just to do with the EGR valve now being clean. Thought I'd take the car to the car wash today, jumped in, started driving "Coolant Low, top up coolant". Quickly checked, there was enough in the tank to get me 30 seconds up the road and back to have the car washed, if it was a major leak. Got back home and checked the area I VAUXHALL / OPEL / CHEVROLET /. VAUXHALL / OPEL ASTRA MK6 / J 1.6 1.9 2.0 CDTI. INSIGNIA MK1 / A 2.0 CDTI. Fuel Pump part ref: 71754571, 95511388, BS51-9C968-AA, 1722834, 8029185, 15261-79J80. WITH THOSE ON YOUR ORIGINAL VALVE! www.ebay.co.uk. Had mine done a week ago and rough idle when cold has gone, I bought the part for £30 off ebay and a 14-17 VAUXHALL INSIGNIA 1.6 CDTI DIESEL EGR VALVE/COOLER 55570005/55501178 (Fits: Vauxhall Insignia) Business. EUR 265.57. EUR 25.74 postage. or Best Offer. H3jGf7.