Question about 1998 kawasaki ZX-7R

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Bike wont start after it heats up, then starts when it cools down

My bike wont start back up after its been heated up! i have to let it sit about 15 minutes then it will start

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  • kawasaki Master
  • 3,698 Answers

Loss of compression? Does use a lot a lot of oil or blue smoke a lot?

Posted on May 12, 2014

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

bennito10
  • 51 Answers

SOURCE: kawasaki motorcycle is heating up and engine not being cooled

hello
if the water pump was working before draining all the fluids i would possibly rule out the pump failing. i do think it is very possible, while very common that there may need to be more coolant added. coolant needs to be added through the radiator cap, and a good practice is to run the cycle while the cap is off and add coolant accordingly. do this for a few minutes. cause likely what has happened is there was an air pocket when adding the coolant, and this can make is seem like enough was put in. but after the pump working it can cycle the water through and help expose those pockets.
hope this was helpful. thank you.

Posted on Mar 24, 2009

Audioaholic
  • 376 Answers

SOURCE: motorbike wont start after running engine

possible bad rings allowing excessive oil seep up and wash spark out on next fire. do a compression check, ck for proper spark, and fuel....hope this helps

Posted on Sep 13, 2009

Testimonial: "cheers i will compresion test and let you know"

  • 921 Answers

SOURCE: HI,

measure voltage going to solenoid for power when you hit the start switch.... you should hear a small clicking sound coming from the solenoid .if no clicking... the solenoid might be going bad. maybe the starter ground wire is broken internally or its possible that you bought a defective starter...you might want to take the starter to a dealer or repair shop to insure it in good working order. the battery you have should be up to a minimum 12.6v 12v wont be enough! 13v is perfect so you"ll have to get it trickle charged up. Oh and before we go on any further, do you know how to push start a motorcycle?have you tried this yet maybe the engine cylinders is seized up from no oil lubrication...get back to me on this you need to know if the engine is seized-up! put in neutral run real fast along side of the bike then pull yourself on top of bike ,pull in the clutch push down into first gear the pop the clutch while you sit down on the seat at the same time. MAKE sure the key is on when you do this and also make sure the kill switch is set to run. if it starts then this is probably your problem ....not getting enough oil to keep it form seizing up...so turn off the engine quick...don't want any further damage. let me know how it turns out.

Posted on Oct 04, 2009

pugwash814
  • 377 Answers

SOURCE: restarting problem when bike is above temp.

sounds like the fuel is being evaporated by the heat hence hard to start when hot, but when it cools down enough the fuel is not effected, check fuel filter & fuel pump pressure,

http://manualfile.com/Motorcycle/Kawasaki/kawasaki-ninja-zx-12r-factory-service-manual.html

here is a manual to help.

Posted on Nov 25, 2009

Testimonial: "thank you i didn"t think about that......thanks"

bxxl
  • 14 Answers

SOURCE: when i drve my 94 zxr 400 hard for a while an she

this is definately a valve problem. The valves are worn and seated to deep in the head they are pulling through. get new a good condition head with valves or good used vales and have them fitted. I might have a head for you.
www.bikepartsonline.co.za

Posted on Jun 16, 2010

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Bike won't start after riding for about 10 miles. Once it cools down again it starts has a dragging sound to it.


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Have fuel pressure tested in both situations. I've seen fuel pumps quit once they get heated up, then when they cool, pump again. Perhaps try WD40 sprayed in to throttle body inlet when no start, and that will tell you if it's a fuel delivery problem. Just remove air cleaner intake hose at front of throttle body, and open throttle and spray for a second or 2 then try to start. If it fires up and runs for a second or 2, then it's a lack of fuel issue.

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It could be starter heatsoak (starter gets hot from engine heat and needs to cool down first).
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More likely to be your ignition coils. They heat up and expand this can cause an open circuit which will close up again when it has cooled down. Although, a bad charging system may cause this problem. Check the battery voltage with engine switched off ( approx 12 volts) and with the engine running (approx 14 volts) If you are getting 14 volts then your battery is dead, if you aren't, then your charging system has a fault.

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Car wont start in cold idles funny for a moment, then is fine .The heat dont act right gets hot going down the road cools off when sitting at idle.


i hate to be the bearer of bad news but it sounds like a head gasket failure.usually occurs in cyl 2 ond or 3 in these engines (1.8L).car sits and engine cools coolant leaks into cylinder and when started runs with amiss until coolant burns out of cylinder and conversely air gets in cooling system,system gets low and you have poor heat esp at idle.have your mechanic confirm but these engines are becoming notorious for this.

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All the wrf's,250 426 400 etc. WILL heat up and boil if they are left running without being ridden.They need air to be flowing over the radiator.1 minute can be enough to get them hot if the choke is used.You wrote that this happened after an oil change.Did you previously let the bike sit and run?.Check your air filter is clean as this can enrich the fuel/air ratio and create extra heat.Main thing is ,shut the bike down if you are stopping for more then a very short time.To satisfy yourself,take the bike for a slow ride as it is warming up.It can take up to 1 mile to get proper temp. into the entire motor.Hope this helps

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