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What is stock fuel pump pressure on a 2006 yamaha apex?

I just found out he DID change the plugs out. He never gapped them. Would you know what they should be gapped too?

I will check his sled for spark plug and gap. The thing is it did run good w same plugs prior to this problem. The plugs were never changed. But will definately look at them.thanks

He already sent the ecu to prince george yamaha / mcx dealer here. Returned no issues? Will install the external pump. Installing the external ? Will he need to send the ecu back in ?

I believe its a fuel issue. Start there anyway. I charged the injectors w air and they turn on, as well w 12 volts. The intank fuel pump is putting out 49 psi , seems high , maybe the return check valve is stuck open? I am going to check fuel pressure after the regulater. What should the fuel...

DC5, that is one nasty sled :-o

OLD SCHOOL

Only pics i have of my meth kit. Mounted pump under intercooler.

We already added 12 v to the mcx injectors ,they sprayed. Will add air to the pressure line of the mcx ecm today. I run the secoundary pump on my sled. I didnt know there was a delete for the factory pumps on the 280 kit. So the external pump will supply fuel to both injectors? I have a spare...

who makes your bumper? nice nytro!

He isnt running a a/f. Running 14 on 94 chevron octane. It starts as soon as he starts building. It only has the stock fuel pump.N external w his kit. Ill check fuel pressure after the fuel regulater. Maybe the fuel reg. Would you know what the regulated f pressure is.Thanks

would love to see pics of your boosted yamaha's !!

nice pics. looks like pics from brandywine? The main route out of brandywine to callaghan lake slide and buried me about 10 years ago. Did you guys check out pemberton or brome ridge?

I can speak only from my experience. I have owned 4 front mounts, both Alpine and Powderlites. After spending THOUSANDS in cracked headers and feeling like a guinea pig for the new header that doesnt crack ? 3 fires and the last one burning down my entire sled. I went with mcx and never will...

I am trying to help a riding partner. He has a 2006 apex w the 280 hp mcx kit. Here is the problem. Sled runs great , just not under boost. When he starts building boost , sometimes {usually] the sled pops and bangs, sputters. This is right at the start of building and continues throughout...

thanks mbarryracing for your time! buddy had pulled out his powerblock. the one that the accessory 12v boosting lead goes to w a 40 amp and 2 10 amp fuses. he cleaned it because of corrosion andPUT IT BACK IN BACKWARDS. gold to negative. Thanks again!!

I got home and turned my ignition to on and you can hear the system prime. My sled 06 mcx apex 310 w secoundary pump. His sled does not make the initial prime noise. I can hear the pump on his when i add a 12 v seperate source to pump and ground. It doesnt prime the system like mine [noise sound ].

while cranking there is 12v at pump. When it imediatly fires it runs 1-2 secounds and dies, runs out of fuel.When the sled fires and runs the 1-2 secounds. There is no power to the pump during the engine running ,only at cranking? I can hear the pump while cranking.

as soon as it fires the fuel pump loses its 12v supply

no codes