Ha! yah you are supposed to remove all of the plugs. Also, don't forget to block open the throttle (No air in means no air to compress). Do each cylinder dry. Then do them each with about three small squirts of oil (2oz) from an oil can. http://www.hirespares.com/images/CAN2-1.jpg. The wet test should provide the same results as the dry + maybe 5psi. any more than that means you have a bad piston ring. If the wet test does not show any difference then your faulty compression is coming from a bad valve. Unless you have two cylinders next to each other showing a similar drop in compression. This means you have a bad head gasket. http://www.freeasestudyguides.com/co...cting-oil.html ... www.youtube.com/watch?v=X_tbksFYhl4 . I'm not sure about the 1.6 but on the 1.8 you compression should be around 190psi. On the 1.6 there is an air valve that sits on the intake manifold above the fuel rail. This valve will sometimes get stuck closed or shut. Stuck open it can cause your idle to be to high. Stuck closed can cause your idle to be to low. Try cleaning this out with carb cleaner, if it is stuck. Be sure to let it dry before putting it back on. I hope all this is helpful. Also you may want or need to check your CPC (Cam Position Censor) and MAF (Mas Air Flow censor). If your Roadster is a "97" and subject to the OBD2 emissions set up you may also want to look at your CAC (Crank Angle Censor). If you wish or need to look at thees let me know. I will send you links on how to do them. All of thees censors can have an impact on your idle and or timing.
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