I KNOW THIS IS A LOT OF INFO, but I am hoping to avoid any unnecessary communications. I will give you everything I have done so far. I am a Honda technician, 12 years, and our fuel systems are a bit different than Chevy. I am trying to help out a friend. This car is hard to start, requiring clear flood every time to get it running(pedal to the floor while starting). I checked basic stuff like feedback from the tps, got.92 V at closed throttle and about 4 volts from WOT, so pretty normal (for a Honda). Had voltage and ground at IAC valve. Removed IAC valve and checked for carbon clogging, bent/stuck pintle. Pintle moves when key is cycled on and off. Cleaned out air passage at IAC. While car is running I can pull the plug wires from 2 and 4 at the same time and it doesn't make any difference. I'm getting plenty of spark from both wires.
Removed plugs and found that both were old and very wet with fuel. Installed two "new" plugs to test it, no change. If number 6 wire is pulled the car dies. So no contribution from 2 and 4. I'm trying not to get to involved with this thing until I get some more info from someone who is more familiar with this vehicles common problems. Not sure how to go about testing the mass air flow sensor since Hondas don't have them. I checked the vacuum hoses, and the air induction boot and found no vacuum leaks. Tested vacuum at "idle" from port on intake plenum-21 inches. Pretty good again, right? Where do I go from here? I am thinking maybe a couple of injectors stuck wide open. The guy says that this problem has been getting worse and worse until now the car will barely start.
Wednesday, December 7th, 2011 AT 9:33 PM