cold starts.. puff of smoke. should i change my spark plugs?

[SpidersWeb]

As long as they're fairly even, and over 140 its all good. I have a pair around 125 and its causing bad blowby.

My mechanic said it should be 180, but not sure if thats accurate for Starions and just a general figure or not.

[ProZac]

Okay, i'd like to admit i know NOTHING about what im talking about here... but if the compression reading was 180psi, wouldnt that men about 12:1 compression? 180/15 = 12. Im not sure if its a linear relationship or not, or of any other factors, but i know the readings on my staz were all around the 130 mark, and that was sweet as. Aslong as they're within 10% of each other your usually okay.

[Cookiemonster]

Your questions answered here Prozac:

http://www.pumaracing.co.uk/comp.htm

Everything you need to know about compression ratios and testing.

[ProZac]

awesome, thanks cookie.