Jump to content

idesign

Honda BF9 9.9Hp 4 Stroke running problem

Recommended Posts

Guys i have above motor.It starts in first pull.After it starts it idels for 2-3 minutes and it shuts off.Also when motor starts and i run on full rpm it runs for about minutes then it fires .same sound comes like it comes from car silencer.then motor quickly goes to low rpm and it dies.can any1 tell me what could be problem.also as far i remember it starts only with choke in.but some time it does with choke out

looks like fuel issue.can any1 please help me out.thank you

 

I noticed there is no water flowing from cooling system indicator.dont know why.may be engine is overheating and shutting off when leaving running idle or on full rpm.can some1 help me what could be the problem.thx

Share this post


Link to post
Share on other sites

Lack of cooling could be as simple as a plugged hose by a ciouple of spiders or a broken impellor in the water pump, not difficult to fix, about 20 minutes and $30. The motor running and shutting off could be a as simple as a bad set of plugs heat up and then won't fire (but I've got my doubts on that one). Carb could have a sticky float needle that won't let enough gas into the bowl. Not a hard job either, about 30 minutes and twisted fingers. Where are you located?

Share this post


Link to post
Share on other sites
Lack of cooling could be as simple as a plugged hose by a ciouple of spiders or a broken impellor in the water pump, not difficult to fix, about 20 minutes and $30. The motor running and shutting off could be a as simple as a bad set of plugs heat up and then won't fire (but I've got my doubts on that one). Carb could have a sticky float needle that won't let enough gas into the bowl. Not a hard job either, about 30 minutes and twisted fingers. Where are you located?

 

Hello Fisherman.thx for reply.I am located in Scarborough.also do u know where I can get compatible parts as Honda oem parts r expensive.let me know.thx

Share this post


Link to post
Share on other sites
Hello Fisherman.thx for reply.I am located in Scarborough.also do u know where I can get compatible parts as Honda oem parts r expensive.let me know.thx

Unfortunately a lot of the Honda parts are propriatary, only fit Honda and I haven't found aftermarket parts except for gas and oil filters. You should be able to get the sparkplugs at Can Tire, NGK DR5HS with a .026"/.06mm gap. If I remember correctly, I think I paid about $30 or so for the impellor on the water pump, a little expensive but no choice on that part. The carb overhaul kit is roughly the same price. Replacing the water pump impellor is not hard, I've done a few differend brands, the Honda is very easy. I can give you the step by step if you wish, I had it posted before, I'll see if I can find it for you.

Share this post


Link to post
Share on other sites
Unfortunately a lot of the Honda parts are propriatary, only fit Honda and I haven't found aftermarket parts except for gas and oil filters. You should be able to get the sparkplugs at Can Tire, NGK DR5HS with a .026"/.06mm gap. If I remember correctly, I think I paid about $30 or so for the impellor on the water pump, a little expensive but no choice on that part. The carb overhaul kit is roughly the same price. Replacing the water pump impellor is not hard, I've done a few differend brands, the Honda is very easy. I can give you the step by step if you wish, I had it posted before, I'll see if I can find it for you.

Hello buddy.thx for reply.Can you please give me steps.thx

Share this post


Link to post
Share on other sites

If you have a motor stand you can do twit there or leave the motor on the back of the boat. Take off the motor cover, put it in reverse. Look at your FNR shifter, follow the linkage inside to where it goes down, there is a U shaped clip with a small pin and cotter pin, with small fingers ;) remove cotter pin and linkage pin. Tilt motor up and look under the cavitation plate above prop, there should be 5 bolts under the cavitation plate, 8mm I think, remove them. The whole lower unit will slide out, you mayneed a bit of persuasion, don't drop it. Once out, remove the 4-5 small bolts on top of the impellor housing, wiggle it loose, remove it, see the 6 fingered rubber wheel, pay attention which way the fingers curl, remove it. Check and see there's no othere debris in there like chunks of rubber from the old impellor. You can blow up the tube that goes up the motor leg to see if there's any other obstructions. Replace impellor and other parts, don't tighten like a gorilla it's not heavy metal. Slide the lower unit back in making sure to line up the water pump outlet with the tube beside the driveshaft, line up the shifter linkage, insert linkage pin/cotter pin. Check and see that FNR works. Do a test run in a garbage can with clean water, never, never, never start or attempt to start the motor without the water pump impellor submerged in water or using "ear muffs" which I don't think work on the smaller Hondas. Good luck.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Similar Topics

    • Honda 2.3 HP review

      Well, we've had 4 trips out with this new 2019 Honda 2.3 air cooled and I have got to say I'm impressed! First of all I got an excellent deal on it, just under $1000.00 all in and a 5 year warranty, RL Sports in Verner were wonderful to deal with! When I picked up the motor it had been fully serviced, tested, and was ready to go fishing. That's service you don't get from the big box stores! Weighing only 29 lbs it's easy to transport which makes it ideal for getting into those little b

      in General Discussion

    • Oil Filter - Tohatsu 20HP 4 stroke

      I have a small puzzle. I need to replace oil filter in my Tohatsu. Dealer says to go with original ones. Sure, no problem, the thing is they are not available in Canada What replacements would you guys recommend? This page lists a few, I am just not sure which one would be best https://www.tohatsu.com/accessories/oil.html  

      in General Discussion

    • 2 stroke oil vs healthcare

      Was down in South Carolina this past week and decided to stock up on some oil for the outboard for this year. Last year I paid $58 a jug for quicksilver (TC-W30) approved oil. Other option is Mercury's oil, yamalube (if you can find it) or Amsoil. All typically over $60. I think there was a dealer in Huntsville that was selling cases last year for $48 a jug of mercury if I can remember correctly. Anywho, headed to walmart and got pennzoil XLF for $17 a jug! I get it, we have healthcare

      in General Discussion

    • Honda 2.3 HP Outboard

      Just managed to score a really good deal on a brand new Honda 2.3 HP 4 stroke air cooled outboard, out the door with a 5 year warranty for a little over $950.00. I had been looking for something small and light for a while now because I want to fish a few small out of the way lakes this summer. We have a small boat stashed at one of them but trying to paddle the boat and fish especially if it was windy at all proved to be a real challenge for me last year. I had thought about getting an ele

      in General Discussion

    • 4 stroke marine oil

      Sad day...winterized the boat today. Had a tough time finding 10w30 4 stroke marine oil BUT I saw tons of 25W40 4 stroke marine oil. I had never noticed this type of oil before. Is this what is being recommended now for 4 stroke engine oil? I did find eventually some 10w30 and bought it but was surprised how much of the other I was seeing (maybe there was so much because nobody buys it!) My engine is a 90 hp Yamaha 4 stroke from 2013 if that makes any difference.

      in General Discussion

×
×
  • Create New...