timmyboy76
New Member
Had the Challenger 1800 out, 2 times now. First time, noticed the port side motor, get up to 7k, then down to 3k, back to 6k, down to 4k..etc. So, docked boat, and did few things.
So far, carbs went thru, inline filters replaced, black fuel lines, with a few "factory" clamps on...
Took boat out today, and prior to today, read a few threads, mentioning same sinerio...one member found it to be a loose clamp on, return line, others found it to be a bad rectifier. So today, launched it, idles great, past wake zone, hammered it, and same thing, this time, with new fuel filter. So, cut motors, unplugged the red wires on rectifiers, hope'n that'll work, but still same crap, cut'n out.
Get'n fed up, on back side of lake, decided to ease back throttle levers, and to my surprise, eased the "starboard" motor to 6k-ish, but not over 6500rpm, and "port" side motor WOT, wouldn't you know, motor never "burped", stayed at 7k, until I gave starboard side, more throttle to pass the 6500rpm, then port side would fall off.
So, with this finding, I put it on trailer, and flushed out, then put compression tester on port side, to find readings to be at 10% difference, but ecceptible psi.
Wonder'n if, the port side, with 10% difference, is enuf difference to "cancel" gas flow to that motor, from the starboard side, which has great compression? Could that be possible?
So far, carbs went thru, inline filters replaced, black fuel lines, with a few "factory" clamps on...
Took boat out today, and prior to today, read a few threads, mentioning same sinerio...one member found it to be a loose clamp on, return line, others found it to be a bad rectifier. So today, launched it, idles great, past wake zone, hammered it, and same thing, this time, with new fuel filter. So, cut motors, unplugged the red wires on rectifiers, hope'n that'll work, but still same crap, cut'n out.
Get'n fed up, on back side of lake, decided to ease back throttle levers, and to my surprise, eased the "starboard" motor to 6k-ish, but not over 6500rpm, and "port" side motor WOT, wouldn't you know, motor never "burped", stayed at 7k, until I gave starboard side, more throttle to pass the 6500rpm, then port side would fall off.
So, with this finding, I put it on trailer, and flushed out, then put compression tester on port side, to find readings to be at 10% difference, but ecceptible psi.
Wonder'n if, the port side, with 10% difference, is enuf difference to "cancel" gas flow to that motor, from the starboard side, which has great compression? Could that be possible?
), definetly rip everything out of fuel system, have a look......:cheers:
