[SeanWinder]

Please help I have a thumping noise coming from near the expansion tank side of engine starts when start the car up
But then goes away until I put revs on starts again for over a minute then dies again then if I drive the car I can hear the thump noise it's not load but it's there a thump thump thump it sometimes does it secs apart and mostly a constant thump sound but it's only started in the last few days, only work been done is a service new oil filters and rad flushed filled with new coolant egr cleaned out comments be brilliant to help me find the cause of anyone been threw the same thank you