| Author |
Message |
    
Jim Stockdale
New member
Username: laministry
Post Number: 1
Registered: 01-2008
| | Posted on Thursday, January 17, 2008 - 02:43 am: | 
|
My 2004 Tohatsu 9.8 4 stroke Runs great in neutral. Easy to start but acts like its on 1 cylinder when put in gear...about 10 seconds later all is well and runs perfect until you put it back in nuetral then the process repeats. Any ideas???? Runs to good to be something serious. |
Tohatsu Guru
Member
Username: tohatsu_guru
Post Number: 61
Registered: 06-2007
| | Posted on Thursday, January 17, 2008 - 08:04 am: |
|
Do you run the fuel out of the engine each time you are done using it? |
Jim Stockdale
New member
Username: laministry
Post Number: 2
Registered: 01-2008
| | Posted on Thursday, January 17, 2008 - 08:44 am: |
|
no...should I? When I bought it the carb was full of oil from being laid on the wrong side. I removed it and cleaned it with gas. |
Tohatsu Guru
Member
Username: tohatsu_guru
Post Number: 62
Registered: 06-2007
| | Posted on Thursday, January 17, 2008 - 09:01 am: |
|
Always run an outboard dry when you are done using it. It does not hurt the engine(if it is healthy) and prevents the number one cause of outboard problems...Carburetor issues. Your problem doesn't sound electrical or mechanical, so that leaves the fuel system. It's possible(likely) that the idle circuit is partially blocked. Clean the carb by dipping it in carburetor cleaner for one hour. Remove any rubber or plastic parts off it first. Then try it again. |
jlymberg
Visitor
| | Posted on Sunday, March 30, 2008 - 12:26 pm: |
|
I have a 2007 Tohatsu 9.8 4 stroke. It just completed the break-in period where it ran smooth, then very rough. I changed the spark plugs and then ran great for a short while. Now it's all over the place. Currently, it's very rough -- barely running only when warm up lever is way up, then stalls when put into neutral. It's getting gas, ob filter appears clear. Is there a in tank filter I should check? Dirty carb issues, or lean air fuel adjsmt? Thanks. |
Tohatsu Guru
Advanced Member
Username: tohatsu_guru
Post Number: 123
Registered: 06-2007
| | Posted on Sunday, March 30, 2008 - 02:02 pm: |
|
Sounds like trash in the carb. But first, always change your spark plugs. There is no air adjustment on the carb, only an idle adjustment. For anything other than sparkplugs take it into the dealer for warranty service. |
jlymberg
Visitor
| | Posted on Sunday, March 30, 2008 - 04:10 pm: |
|
Wonder if it might be possible to clean the carb myself. Is it that difficult to take it off and spray/soak in carb cleaner? Do I need to look at a manual? Advice? To take it to dealer would require taking it out of boat, undoing difficult linkages (it's a remote), manpower, effort and a few weeks time--though maybe as a last resort. Thanks again. |
Tohatsu Guru
Advanced Member
Username: tohatsu_guru
Post Number: 124
Registered: 06-2007
| | Posted on Sunday, March 30, 2008 - 04:41 pm: |
|
Two bolts holding the carb on. Then remove, disassemble, soak, reassemble and install. |
jlymberg
Visitor
| | Posted on Tuesday, April 01, 2008 - 07:05 pm: |
|
So, I took out the carb, disassembled, (contained brownish, powder-like stuff) cleaned and soaked in carb cleaner for 3 hrs, assembled again and -- exactly the same as before. Seems to idle at higher speeds, but not at low. And runs rough. Running too lean? Also, changed out gas, checked fuel tank lines, etc, all okay. Any other ideas? |
Tohatsu Guru
Advanced Member
Username: tohatsu_guru
Post Number: 125
Registered: 06-2007
| | Posted on Tuesday, April 01, 2008 - 07:15 pm: |
|
Clean it again...And/or start the troubleshooting procedures in the service manual. |
jlymberg
Visitor
| | Posted on Thursday, April 03, 2008 - 01:15 pm: |
|
I'm going to try it again. Is there some special carb cleaner to use. Last time I had to spray an entire can into a container to soak it (could not find a liquid bottle). Also, is spraying compressed air into carb to clean out a good idea? Thanks for your advice. |
Tohatsu Guru
Advanced Member
Username: tohatsu_guru
Post Number: 130
Registered: 06-2007
| | Posted on Thursday, April 03, 2008 - 01:31 pm: |
|
Carb cleaner comes in 1 and 5 gallon cans and is available from any auto parts store..The stuff you can spray is useless. After dipping the carb components in cleaner and then washing it with water, you blow air through it. |
pete lane
New member
Username: plane
Post Number: 1
Registered: 06-2008
| | Posted on Monday, June 02, 2008 - 08:47 pm: |
|
Hi there. I also have a 9.8 4-stroke, and have a question. It runs fine, but I notice a whine that appears just a little bit above idle speed, then fades out as I give it more revs. Is this normal, or maybe something like a loose timing belt. . .if it has such a thing? |
Tohatsu Guru
Advanced Member
Username: tohatsu_guru
Post Number: 189
Registered: 06-2007
| | Posted on Monday, June 02, 2008 - 10:05 pm: |
|
Just relax and don't worry about any sounds. The engine is fine. |
