Posts
151
Joined
1/9/2015
Location
Darlington, PA
US
New to -4S-Joe
8/7/2017 2:49am
8/7/2017 2:49am
I have a 2011 Suzuki RMZ 450 that does not want to start. If I can get it started it runs like it should, but is very hard to start. This came on suddenly. I thought my Vortex ECU went bad but shipped it to Australia and they tested it and said it was fine. I thought it was bad because bike would start easier with OEM ECU, but that didn't last long either as now bike doesn't want to start with OEM ECU either. My valves are in spec. Head and valves have 6 hours on them. I sent head out to have it double checked and the company verified that valves are sealing. Vortex told me these machines are notorious for bad wiring harnesses my question has anyone had a similar problem? Any help is much appreciated! Thanks!
Paw Paw
Could be clogged up injectors as well.
Try cleaning you injector.
Also, check your oil smell to see if it smells like gas. If so, the injector is leaking and causing the hard starting.
With you smelling fuel when you are attempting to start sure indicates a leaking injector.
Paw Paw
The Shop
There should be no reason it's not starting. It could be a faulty tip over censor, but it has spark so that should eliminate the tip over censor . How much fuel is the injector spraying? Is it alot or barely enough to see?
l pushed the wire pin socket back in with needle-nose pliers and got a hot glue gun to secure it in. Bike never misses a beat now and they both start first kick hot or cold.
Oh it was quite a ways back, sorry :-)
2nd, l called a local ECU expert, he said very rare for an ECU failure, normally bad pin contact in the plug.
3rd, Sometimes when l pulled the ECU plug in hard by hand l would get an occassional spark at the sparkplug.
4th, The workshop manual shows the blue/white wire from the ECU goes to the ignition coil.
With those clues l went looking, found the blue/white wire had been pulled back out of the plug, pushed it in, starts first kick and has not missed a beat for over a year. My friends went after mine, we went straight to it :-)
Also check the kill switch.
Paw Paw
Pit Row
One other thing I did with my RMZ is I ground/filed the outer plastic surround of the wiring plug that plugs into the ECU so that the pins went further into their matching plugs. I then taped around the join to make sure it was water-tight. Our local ECU expert told me that on some models the pins don't have enough penetration (and you know that can be a problem ;-) ), it did appear so with mine.
I check in here everyday to see how you are going :-)
Post a reply to: 2011 Suzuki RMZ 450 not wanting to fire up.