Phazer Fuelling Issue

[Kenogami]

Greetings everyone. I have been lurking for years on these forums and would like to be pointed in the right direction in regards to a fuelling issue with my 2007 Phazer GT. My daughter was out riding when the Phazer began running rough and spitting raw fuel from the exhaust. I replaced the plugs however the engine continued to run rough and leak fuel from the exhaust to the point of soaking the tunnel and toolbox. I removed the exhaust at the manifold only to discover that the #1 cylinder although making power was extremely rich while the # 2 cylinder appeared to normal. If this issue was being caused by a faulty fuel pressure regulator would it not cause both cylinders to run rich or am I looking at an injector issue? Hope to figure this out only a few weeks of riding left!

 

[Snowmixer]

Sounds almost like one injector would have to be clogged/sticking open to be able to push that much fuel through to the exhaust. It would probably be a bit of work, but if you could swap the injectors, then run the sled again (it will probably run the same) and then check the exhaust again, my guess is that you'd see the other cylinder with the overfuelling issue. That would tell me that the injector is most likely the problem. And as far as the fuel pressure regulator goes, if there were a problem there, yes it would effect both cylinders. Good luck!

 

[Voda2000]

No codes on the display?

 

[sleepin@theline]

It might be an ignition issue. Mine was exhibiting the same symptoms with a code 33.

 

[Mooseman]

I would try swapping the ignition coils first since it's easier to do that rather than the injectors. If the problem now foes to the other cylinder, then it's the coil. If it's the same, then try swapping the injectors.