roadsmith trike kit. i had to hot wire the fuel pump the right phillips screw above the fuses is hot when the key is on. the left screw is ground..used a in-line 5 amp fuse and on-off switch when i wired it. new OEM shutoff valve.
put the old ECU back in just cranked no start, so i put the newer used one back in. it now will run if you keep reving it. as soon as you let off it slows down ad dies.
1. new oem fuel pump. plugs look good, not fouled or wet
2. new oem fuel shut-off valve. its getting vacuum.
3. used ECU (37k) but doesn't provide power to fuel pump when ign. key is turned on.
4. i'm getting spark to ALL 6 plugs.so the service manual turns you to fuel chapter 4 on flow chart
5. new fuses with diaeletric grease.also relays
6. new starter relay, and changes the main fuse to mini fuses.
5. i eliminated the shut off valve but problem is the same.
i had the bike in the show and they cleaned the carb, installed a carb kit synced the carbs and the bike ran great for 2 months,. it would start over night cold without useing the choke. ran great. then just quite. because it sounds like its starving for fuel so i changed the fuel filter and made it home 4 miles.
now it will start rev it up and it ill run 4-5 sec's, then die
plugs look good not wet fouled . i have eliminated the shutoff valve and went front tank to fuel filter to carb. no help. shop has replaced bad vacuum hoses ran good for 2 monthsand put a carb kit in it.
ECU pin 2A is hot when the key is on.