Hey everyone im new to this forum and new to riding. I just recently baught a 97 zx7r. i was riding the other day and it shutoff on me. it acted like it was out of gas but it still had some in the tanks. I tried starting it and all it would do is crank over. I filled the tank and that didnt help. it still just cranks over. i read into this alot before i created my profile and it sounds like it might be the ignition switch, buuut would that shut the bike off while riding??
97 zx7r problem??? help please lol
1 - 14 of 14 Posts
Joined
·
7,375 Posts
Could be your fuel pump/filter.Same thing happen to my 7 and if it does happen its because i run it too low on fuel.Could be some dirt and debris caught up in there.Tho mine would still start but shut off right away unless i had the choke cranked on.So i would take off with the choke wide open,then once i got to a roll turn the choke off and just crank on the throttle and it would chug and sputter then BOOM! BAAAAAAAAWWWWWWWHHHHHH!
Put a can of Sea Foam in her,give the bike a good rock,then try starting her and if she does but doesnt want to stay running put the choke on and and take off riding like that then turn the choke off and just come on tothe throttle and shell clear.
Joined
·
11,237 Posts
I think that is pretty obvious by the fact that it runs fine, then when it gets low it doesnt.
My fuel pump was actually hooked up backwards when I bought mine...
If it wasnt for the fact that the pump was partially seized it would have been pumping fuel out of the carbs and back into the tank :scared
I took the pump off, touched the leads to a good car battery and it hesitated, broke loose and then has been running just fine ever since.
There is a chance yours just isnt running at all but might work. But there is also a chance its dead.
Or it could be something else.
thanks guys. i just ripped it all apart and checked the flow through the filter and all the lines. it flows fine but im pretty sure you guys nailed it with the pump. i guess ill be buying a new pump tomorrow lol. im crossing my fingers thats the issue. then i gotta replace the clutch and im golden...
PS: just a random thaught about the pump. im pretty sure i use to hear it kick on when i turned the power onto the bike. i dont hear it anymore. just thaught of that. can everybody else usually hear theirs?
PS: just a random thaught about the pump. im pretty sure i use to hear it kick on when i turned the power onto the bike. i dont hear it anymore. just thaught of that. can everybody else usually hear theirs?
Joined
·
11,237 Posts
touch it to a known good battery and see if it works or not.
The pump doesnt run unless the bike is running. Some people will tell you that you can put it in 1st, let out on the clutch and then thumb the starter - but that has never worked for me.
The pump doesnt run unless the bike is running. Some people will tell you that you can put it in 1st, let out on the clutch and then thumb the starter - but that has never worked for me.
Joined
·
11,237 Posts
You can check if the pump is working on the bike by starting the bike and sticking your finger on it. It has a very noticeable pulsing/clicking feel to it, as I am sure you noticed.
Good news is a fuel pump relay is cheap as shit.
Hell yeah!! Thats music to my ears hahaha now hopefully that is def the issue lol
Joined
·
12 Posts
Well the same thing happened to me that your talking about I just bought a 99zx7r and I took it for a ride around the block and it just shut off on me 3 quarters of the way through so I figured it was out of gas I went and grabbed 4 gallons of super and threw it I'n the bike tryed starting it and all it did was crank tryed starting it for 10 min on and off ended up killing my battery so put a charge to the battery and still nothing so my buddie jumped on the bike and checked it over he ended up turning the key and the bikes neutral indicator was on but he kicked it I'n to first and then back I'n to neutral and it fired right up so I don't know if this will help you but give it a try
I don't post much, love to read, spend more time normally over at http://www.kawiforums.com/zx-7r/ as ****** lives over there with the EFI project... Anyways...
Next time it dies. Put the bike in first gear, DO NOT PULL CLUTCH, try to start. This is the correct procedure to Prime the Carbs. You will hear it pulsing, then slow down, and stop... If it never stops, you fuelbowl gaskets are worn or set to the wrong height. If you hear nothing, your Bowls are full....
A Big problem the 7s have is Vapor Lock. ****** has us wrap all our fuel lines in header tape, and makes a big difference. Also, another cheap way to make sure your pump is pumping good, change the points. Only have to Solder one wire, but it will be a puzzle if you let it fall apart. Here is one on FleaBay now. CLICKY HERE...
On the other Forum, ****** has a Good to know guide about our 7s sticked. The Grey wire not getting 6volts to the CDI is a problem as it seems to heat it self up inside the ignition switch.
A Can of Starter Fluid will tell you for sure if it is a Fuel or Electrical issue...
Good luck brother, the 7s are still the king of the Sports Bike World with the years they dominated!
Next time it dies. Put the bike in first gear, DO NOT PULL CLUTCH, try to start. This is the correct procedure to Prime the Carbs. You will hear it pulsing, then slow down, and stop... If it never stops, you fuelbowl gaskets are worn or set to the wrong height. If you hear nothing, your Bowls are full....
A Big problem the 7s have is Vapor Lock. ****** has us wrap all our fuel lines in header tape, and makes a big difference. Also, another cheap way to make sure your pump is pumping good, change the points. Only have to Solder one wire, but it will be a puzzle if you let it fall apart. Here is one on FleaBay now. CLICKY HERE...
On the other Forum, ****** has a Good to know guide about our 7s sticked. The Grey wire not getting 6volts to the CDI is a problem as it seems to heat it self up inside the ignition switch.
A Can of Starter Fluid will tell you for sure if it is a Fuel or Electrical issue...
Good luck brother, the 7s are still the king of the Sports Bike World with the years they dominated!
Joined
·
19 Posts
this literally just happened to me, so naturally i tested the fuel pump first. it ran for a second then stopped. so i pulled it, and cleaned it out, hooked it back up to the leads and boom, runs great again. left me stranded on the side of the road freezing my ass off for two hours... smh. good luck.
Joined
·
11,237 Posts
As I keep telling... everyone... this does not work on my bike.
And he says to hit the junction box - I have found that hitting the junction box hard enough causes you to jar the starter relay. Instead of punching the shit out of your junction box, give the starter relay a tap instead.
It works without fail.
And, check the ignition harness connector. Mine was totally melted around the brown/white wires.
1 - 14 of 14 Posts
