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Generally rough running


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I have this issue where the car starts and idles fine but when cold, I drive down the road at a steady 30 out 40mph, the revs fluctuate by about 500 rpm, enough to hear and enough to feel. When warmed up fully it's fine, until the next day when it does it all again. The only other issue is noisy tappets on cold start, for the first minute or so, then the tapping goes away. Is there any chance the two could be linked? Any thoughts?

 

Thank you.

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5 hours ago, 911 dreamer said:

Thanks Loren, not sure where to get a smoke machine from just yet but I'll try this and let you know. Thank you.

 

A good smoke test unit is upwards of $1.5K, so I would consider doing what Loren says and take it to a shop with one.

 

71c2QSW-mrL._SL1500_.jpg

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