carrillohec
Recruit
- Joined
- Jul 10, 2016
- Messages
- 3
Hello friends, I need your help urgently. I have a pair of motors yamaha z200 HPDI with 1000 hours, I'm on the verge of madness, one of the engines was working only four cylinders(2 y 3 dont work), with the help of this forum, reaches the source of the problem, the famous shift position switch, I buyed a YDS and apparently the switch fails, sometimes sending the signal that is in drive position, and sometimes in neutral, PROBLEM SOLVED. the other engine has the problem that a lot people has happened and I ve read around here.when the engine runs 2000 RPM the engine to run good, but when I step up to 3000 rpm, the engine fails from 3000 to1800-2000 and goes up to 3000 and back down. if the sea is in good condition to navigate with the help of other engine is stabilized and it runs well at 3000-4000 rpm. with the help of YDS when the boat is running, i checked that the fuel pressure both, medium and high, down from 50 to 6 and 700 to 100 respectively, and finally the YDS me alone indicates failure nozzle, I assume that is because not enough pressure will fuel reaches the injectors.
What I've done:
compression test 105
clean all fuel line.
change: fitting 10 micron filter and water separator engine, internal filter vst injector cleaning and changing filters in micro injectors and high pressure pump. review of the entire harness
after this I swap the VST tank, just to discard a problem with all elements of VST.y the failure continuous .The low pumps I have not touched because I read that when that pumps fail the bulb pump is soft, and in my case is always hard, so if I notice this time in the YDS software, when i ran at 1500 rpm there is a fault in the coil pulser, my question now is. can the pulser coil generate fuel pressures fail? or would be 2 different failures?
Best Regards
What I've done:
compression test 105
clean all fuel line.
change: fitting 10 micron filter and water separator engine, internal filter vst injector cleaning and changing filters in micro injectors and high pressure pump. review of the entire harness
after this I swap the VST tank, just to discard a problem with all elements of VST.y the failure continuous .The low pumps I have not touched because I read that when that pumps fail the bulb pump is soft, and in my case is always hard, so if I notice this time in the YDS software, when i ran at 1500 rpm there is a fault in the coil pulser, my question now is. can the pulser coil generate fuel pressures fail? or would be 2 different failures?
Best Regards