weehe
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Posts: 67
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Registered: Oct 26, 2020 7:25:36 GMT -7
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Post by weehe on Dec 23, 2020 18:31:58 GMT -7
If the injectors are plugged in correctly,then maybe the injector harness is not plugged in correctly.
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Post by willl84 on Dec 24, 2020 4:21:01 GMT -7
You have the airbox off - is the intake air temp sensor disconnected?
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trickytriggs23
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Dec 24, 2020 14:30:35 GMT -7
Ok here are my steps: 1.)Did the valve clearance adjustment 2.)added the PCV 3.) Didn't start 4.) took the PCV out didn't start 5.) Though I got the timing reversed so I switched it 180. 6.)Didn't work 7.)Checked the spark, has spark 8.)Put 4 LEDS in the connector, when the fuel primes, injector #4 runs. The rest blink after the priming is over. 9.)Tried to start the bike with lighter fluid directly inside the intake. Doesn't start, air gets pushed out of the intake. 10.) I have checked all the connections multiple times and nothing. 11.) So I'm thinking maybe the Crank sensor is not firing at the correct stroke time. Maybe when the pistons are goin down the exhaust valves are opening and not the intake valves. As a result the fuel doesn't get pushed in. IDK I am stumped on this. Maybe I will take the bike apart to the valves again and redo the timing.
Notes: All the connections are connected including the intake air. The airbox is disconnected and doesn't have any electrical connections to it.
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Post by willl84 on Dec 25, 2020 4:50:56 GMT -7
If air is coming back out of the intake then my money is on something being off with the cam timing. I haven't done an adjustment on these bike yet so I can't be of much help making sure it's correct unfortunately.
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trickytriggs23
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Dec 25, 2020 13:23:24 GMT -7
Yeah I think the next think I’m going to do is take the bike apart and make sure the timing is correct again. I also bought the Yamaha diagnostic tool but it won’t be here for another week.
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trickytriggs23
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Posts: 24
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 12, 2021 16:29:53 GMT -7
So the fuel injector couplers all have signal going to the fuel injectors. The ohm resistance of 12 is also the same for all injectors. My question is what is the voltage at which the signal should be to the fuel injectors?
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Post by willl84 on Jan 12, 2021 19:02:27 GMT -7
It should be 12V. If you take a battery and jumper sires and jump 12V to the injector pins you'll hear them click open and when you pull power you'll hear them click shut. This is how I've always bench tested and cleaned injectors
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trickytriggs23
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 17, 2021 23:16:54 GMT -7
Here's the update, so all the fuel injectors do work. The way I was testing it was wrong. When I hook up the fuel tank and turn the key the fuel injectors fire and you can smell the fuel in the throttle body. But having thought that I did the valve clearance adjustment wrong I decided to pull the bike apart.
I got to the cams and re evaluated what I did. Here's what I did:
figured out what BTDC105 degree meant. It means 105 degrees before top dead center. So I took #1 cylinder spark plug out and stuck a wire inside. Doing this you can see the position of the piston.
After that I turned the crankshaft counter clockwise until the piston was on the upstroke then aligned "K|" mark on the crank with the hole in the crank cover.
Then I aligned the marks on the camshafts with the cam cover surface.
Put everything back together and turned the key. Tried to start and nothing.
What I did notice was when I crank the bike I put my palm against the exhaust and the air was pulling into the bike. Then I put my palm against the throttle body and the air pushing out the throttle body. I don't think this is what supposed to be happening. Can anyone tell me if by accident I switched the camshaft which would cause this to happen. If not that then what could be the problem.
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Post by willl84 on Jan 18, 2021 5:33:20 GMT -7
It almost sounds like your cams are 180º out of alignment due to the fact that air is coming in the exhaust and out the intake. I'm not 100% sure though as I haven't ever done a valve service on this particular engine so I don't know how it differs from a traditional I4. Looking at the service manual (page 5-19) it would seem you're doing everything correct. Turn the crankshaft CCW until the K| lines up then install the camshafts. I guess it's possible to get the intake and exhaust cams mixed but there's usually some kind of identification that's cast into the camshafts themselves or into the gears. Also one cam should have a trigger pin for the camshaft position sensor and the other shouldn't. I'm not sure ws which off the top of my head but it should be easy to tell from looking at where the CPS is on the valve cover.
Also fuel shouldn't be coming out of the injectors at all when you turn the key on. The pump should run for a few seconds to prime but nothing should be coming from the injectors until you try to start the bike.
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trickytriggs23
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 18, 2021 13:42:05 GMT -7
It almost sounds like your cams are 180º out of alignment due to the fact that air is coming in the exhaust and out the intake. I'm not 100% sure though as I haven't ever done a valve service on this particular engine so I don't know how it differs from a traditional I4. Looking at the service manual (page 5-19) it would seem you're doing everything correct. Turn the crankshaft CCW until the K| lines up then install the camshafts. I guess it's possible to get the intake and exhaust cams mixed but there's usually some kind of identification that's cast into the camshafts themselves or into the gears. Also one cam should have a trigger pin for the camshaft position sensor and the other shouldn't. I'm not sure ws which off the top of my head but it should be easy to tell from looking at where the CPS is on the valve cover. Also fuel shouldn't be coming out of the injectors at all when you turn the key on. The pump should run for a few seconds to prime but nothing should be coming from the injectors until you try to start the bike. So I think your right it doesn't make sense that the injectors would be putting fuel in when priming because in needs to get to the right fuel pressure. Having said that I had cranked the engine and you could smell the fuel. As for the cams I gonna look at the cams right now
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trickytriggs23
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 19, 2021 11:44:30 GMT -7
Well at first look I'm happy to say that the cams are indeed switched!! Man I got so excited lmao. Gonna switch them back I'll let you guys know how it goes.
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Post by willl84 on Jan 19, 2021 11:54:12 GMT -7
Well at first look I'm happy to say that the cams are indeed switched!! Man I got so excited lmao. Gonna switch them back I'll let you guys know how it goes. Glad to hear! Hopefully no valves were bent in the process. As long as the timing was right even with the cams being swapped you should be good to go. Fingers crossed
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trickytriggs23
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Posts: 24
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 21, 2021 11:52:09 GMT -7
So, I switched everything up and nothin. It does now sound like air is coming out of the exhaust. Unfortunately, I heard a large click when the bike first turned over. However the bike turns over with zero binding. It doesn’t sound like the bike wants to start. Do you guys know if the bike needs to have the air box on in order to start? I also have the radiator off which shouldn’t stop the bike from running.
I’m going to disconnect the PCV then look at it again
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trickytriggs23
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Posts: 24
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 21, 2021 11:57:20 GMT -7
Let’s fuuccckking goooo boiiiiis! Just went out and tried to start it and Bam! Bike started and idled! Thanks for all the support guys wouldn’t have been able to do it without the extra help!
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Post by willl84 on Jan 21, 2021 12:34:03 GMT -7
Let’s fuuccckking goooo boiiiiis! Just went out and tried to start it and Bam! Bike started and idled! Thanks for all the support guys wouldn’t have been able to do it without the extra help! Awesome!! Gotta love the feeling!
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trickytriggs23
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Posts: 24
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 21, 2021 21:21:01 GMT -7
Went for a ride today and got some lights!
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Post by willl84 on Jan 22, 2021 10:14:33 GMT -7
Went for a ride today and got some lights! Careful with those around the cops - they're getting pretty tough on blue and red lighting on things
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trickytriggs23
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Posts: 24
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Registered: Dec 19, 2020 22:13:31 GMT -7
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Post by trickytriggs23 on Jan 23, 2021 20:53:11 GMT -7
Haven't had a problem over hear since I live near Hartford CT. But yeah your right.
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Post by willl84 on Jan 24, 2021 4:25:22 GMT -7
Haven't had a problem over hear since I live near Hartford CT. But yeah your right. You're not far from me! I'm just outside Worcester. Cops around here hate that shit lol
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Post by rracerfz10 on Jan 28, 2021 14:27:43 GMT -7
I agree with willl84 go back and triple check all the connecters for everything. Make sure your clutch switch is working and that your sidestand switch isn't all gunked up with chain lube. there are a dozen things that could cause this. But I also don't hear your fuel pump priming either. Try this,key off, bike in neutral, start/stop switch in the run position, turn the key on and you should hear the fuel pump kick on and it should be loud.
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