My car recently began requiering long cranking before it would start up. It runs ok...A bit slower than usual. Its a 1.8t with 107 xxx miles. Spark plugs are original. Is this a sign of bad coilpacks or sprark plugs , or something else?

 

i would replace the plugs asap. i don't understand why you're still asking this question if you're teling us you still have the original plugs in it.

 

other thing is ( has it ever had a service ) I doubt very much the plugs are the original ones because that comes as a service requirement[:-]

 

Sorry for confusion. I ment that the sparks are original meaning not aftermarket (NGK etc) . What replacement do you recommened. Is OEM plugs expensive? What other things do you usually change with that?

 

Plugs should be done every 40K miles. It probably wouldn't even run with 107K miles on original plugs!

NGK BKR6Es work just fine, especially for the price. Gap them to .28 if chipped, .32 if stock. Search to verify the gap.

A slow start could be a number of things. Poor fuel pressure, worn plugs...

 

Or could be the coolant temperature sensor, especially if it's hardest on warm starts.

 

oh yeah, good call Sineo. that certainly would mess with the fuel trim.