First off, if this is the wrong section I apologize, I am new to the site.
I got my GSX-R1000 from someone on Facebook marketplace, it has issues but I was aware of them. The owner was an 18-19 year old who seemed to know nothing about motorcycles or even how an engine works so he didn't maintain it very well. Here is the issue I'm having.
When I first got it, it wouldn't rev over 6000ish RPM while in gear no matter how little or hard you gave it throttle. My first idea was to check the tank, fuel pump assembly etc. I cleaned everything. I got rid of the big fuel filter, bought a new 255lph pump and 43-45 PSI regulator etc etc etc. everything to spec. Hooked it up, cleaned all 4 injectors, cleaned the tank, check for a collapsed fuel line, bypassed the clutch, bypassed the kickstand....I've done almost everything there is to do that I find on these forums and I keep having the same issue.
When I fire up the bike after its been sitting for 12+ hours in my garage, it acts like its a brand new bike. The throttle is responsive, there's no hesitation to rev, it tacs out to redline like a healthy bike should. It doesn't black smoke, white smoke, backfire, pop, nothing. It seems perfectly fine...then it warms up.
If I take it for a short ride around my neighborhood, the more and more I ride, the worse the bike gets and eventually it will die. Since I've messed with every component of the fuel system I'm confident it has enough fuel flow and pressure. Come to find out, cylinder 1 and 4 don't seem to fire when the bike is warmed up, I unplugged 1 and 4 but the bike didn't seem to make much of a difference at warm idle.
One of my biggest finds on the bike is corrosion on the ECM plug/prongs. I cleaned the prongs and the plug as best as I can and the bike ran better, but still has the same issue, only now the bike won't die after its warm. I've checked wiring from the ECM to all the way through the harness, no bad cuts or tears in any wires, the leads on the coils look fine, I've even replaced the coils with my buddies bike and it made no difference. I have replaced the stator, rectifier, battery, fuel pump, fuel pressure regulator, battery, fuel filter, cleaned the tank, put fresh 93 octane in it, adjust the throttle position sensor, and even a new fuse for the fuel pump. I deleted the STVA as well...at this point I am lost and confused. The bike doesn't throw any codes either. To me it sounds like a coil wire issue but I don't know where to look other than follow the wires to the CDI/ECM.
It wants to run like a brand new bike when I start it until it gets to 170 degrees F and above, then it wants to act weird and struggle to run right or even accelerate.
If there are any life long K1 owners out there that have any advice or where to look next I would greatly appreciate it.
I got my GSX-R1000 from someone on Facebook marketplace, it has issues but I was aware of them. The owner was an 18-19 year old who seemed to know nothing about motorcycles or even how an engine works so he didn't maintain it very well. Here is the issue I'm having.
When I first got it, it wouldn't rev over 6000ish RPM while in gear no matter how little or hard you gave it throttle. My first idea was to check the tank, fuel pump assembly etc. I cleaned everything. I got rid of the big fuel filter, bought a new 255lph pump and 43-45 PSI regulator etc etc etc. everything to spec. Hooked it up, cleaned all 4 injectors, cleaned the tank, check for a collapsed fuel line, bypassed the clutch, bypassed the kickstand....I've done almost everything there is to do that I find on these forums and I keep having the same issue.
When I fire up the bike after its been sitting for 12+ hours in my garage, it acts like its a brand new bike. The throttle is responsive, there's no hesitation to rev, it tacs out to redline like a healthy bike should. It doesn't black smoke, white smoke, backfire, pop, nothing. It seems perfectly fine...then it warms up.
If I take it for a short ride around my neighborhood, the more and more I ride, the worse the bike gets and eventually it will die. Since I've messed with every component of the fuel system I'm confident it has enough fuel flow and pressure. Come to find out, cylinder 1 and 4 don't seem to fire when the bike is warmed up, I unplugged 1 and 4 but the bike didn't seem to make much of a difference at warm idle.
One of my biggest finds on the bike is corrosion on the ECM plug/prongs. I cleaned the prongs and the plug as best as I can and the bike ran better, but still has the same issue, only now the bike won't die after its warm. I've checked wiring from the ECM to all the way through the harness, no bad cuts or tears in any wires, the leads on the coils look fine, I've even replaced the coils with my buddies bike and it made no difference. I have replaced the stator, rectifier, battery, fuel pump, fuel pressure regulator, battery, fuel filter, cleaned the tank, put fresh 93 octane in it, adjust the throttle position sensor, and even a new fuse for the fuel pump. I deleted the STVA as well...at this point I am lost and confused. The bike doesn't throw any codes either. To me it sounds like a coil wire issue but I don't know where to look other than follow the wires to the CDI/ECM.
It wants to run like a brand new bike when I start it until it gets to 170 degrees F and above, then it wants to act weird and struggle to run right or even accelerate.
If there are any life long K1 owners out there that have any advice or where to look next I would greatly appreciate it.