I'm looking for help troubleshooting my fuel line. I am getting some air into it somewhere.<br /><br />My setup is this: a 90hp johnson as my main motor and a 9hp auxillary motor. I run the fuel line from the tank to a Racor filter and then 2 lines come off of that (1 to each engine) each with its own priming bulb. <br /><br />When the main motor is running, if the kicker fuel line is plugged in (but the kicker is not running) air gets into the line. If I unplug the kicker, it used to be fine, but now I am getting air in all the time. <br /><br />The lines are showing some cracking and signs of wear, and the fitting to the fuel tank isn't as tight as it used to be. I will go ahead and replace all these bits, since that seems to be the recommendation on most of the posts I have seen. <br /><br />Do people think that new lines will solve the air in through the kicker problem, or is that something that I should have expected when I hooked them up that way?<br /><br />Also, I tried running a temporary line from my emergency tank directly to the main motor and the bulb stayed tight and I didn't get the air in. But this still didn't solve the basic motor problem. <br /><br />The motor is running rough, stalls, spits smoke... things that I have read in other people with fuel delivery problems. When I hooked up the new line, I stil got these same problems. Might there be some residual issues (too much oil in the cylinders, say) from it sucking air that will go away if I let it keep running rough, or do I need to look for other probelems?<br /><br />Thanks,<br />mike