| 
								 | 
							
								
  | 
							
								
  | 
						
								
  | 
						
| 
			
			
			
			 Guest 
			
			
		
			
			
			
					Posts: n/a
				 
                
				
				
				
				 | 
	
	
	
		
		
		
		
		
		 
			Hi there. Im from south africa and I have a 89 e30 318i. M40 motor  
		
	
		
	
			
				I have just rebuilt the eNtire motor, rebore 20 tho. I had a problem with a rough idle and changed the idle valve, seem to sort the problem out but wen I drive car runs smooth and wen I press the accelerator to go faster is starts tp jerk and once I leave the pedal n press again it accelerates proplly. What can b the cause of this? __________________ This post was auto-generated based upon a question asked on our tech article page here:  | 
||
| 		
			
			 | 
	
	
  | 
| 
			
			
			
			 Registered User 
			
			
		
			
			
			Join Date: Jul 2013 
				
				
				
					Posts: 0
				 
                
				
				
				
				 | 
	
	
	
		
		
		
		
		
		 
			It could be the valve timing is not correct, or the throttle position switch/sensor is faulty or you have a worn airflow meter  
		
	
		
	
			
			
				
					- Kerry  | 
||
| 		
			
			 | 
	
	
  |