I need some hint and tips on this car: Renault Kangoo 1,5 DCI, modelyear 2007. Firing order 1-3-4-2. Delphi injection system, common rail
History; This car have been placed on a local Reanult dealer for about 5 month
. The car stopped on the road and it was not possible to get the engine started again. The dealer have done some fault finding and used too much time on this car. The dealer told the customer to replace the harness of the engine, but the customer say no more faultfinding based on the metod: replace parts until it works.
The problem is still the same. After several month the custome ask me to do some measurement with my Pico Scope. At first I logged some fault codes pointing on fuel rail pressure. Measured the leakage on the injectors, injector syl. 1 was defektive. Changed the injector and now the fuel pressure rise to 307 bar using the starter motor. Now I though the problem was cleared an I tried to start the engine. No,no the engine don`t start , sometimes it fired and run rought for about 3-4 sec. It was still a problem, what now?? I "loaded" my wondeful Pico scope, my diagnostic computer and the first look sensor". Connected ch. A of Pico scope to the first look sensor (blue) and ch. B to the lead of injector no. 1(red) Cranked the engine and then stored the wave form on my computer. It seems that there can be something wrong with the compression on two of the sylinders. Timing belt, crankshaft/camshaft out of position? Or broken headgasket?
Will some of you please reply me and give me some comments?
Att. scope picture
Sven Arild Mortensen