I recently removed the CIS from the top of the engine to replace the rubber tubes and o-rings on the injectors due to air leaks. When I put it back together and in the car. It was worse than when I started. I used all new rubber tubes and clamps. So, I just removed it again (not fun) and notice that the new rubber has a powder coating on it (release agent?). Very slight but could that cause air to pass by even though clamps were very tight? Could they have been too tight? Should I use a non-hardening sealer this time?
Thanks for any expert advice.....
