I have a 2002 Jeep Cherokee 2.5 diesel with 83000 miles. Last October my garage replaced fuel injectors 1 and 2 and the copper seals. 2 weeks later the EGR pipe came loose. In January a bolt sheared and fuel injector 3 dropped onto the road (literally). In April injector 4 blew its rubber O-ring twice in 3 days. Finally yesterday whilst driving back from Bristol one of the rear injectors blew suddenly 20 miles from home (big bang, lots of smoke).

The car drives normally in between these episodes - no loss of power, timing issues, stalling or change in engine noise. There are no warning lights or signs of engine malfunction (normal running temp, fuel economy etc).

My garage believes that there is a buildup of pressure in the engine causing the fuel injectors to suddenly blow but noone knows why this is happening now - I have had the car for 4 years with no problems before this.

The car is booked into a diesel specialist garage in 1 weeks time. Has any one else had a similar problem?