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brandon327
MMT Pro Member
Joined: Sun Nov 08, 2009 4:38 pm
Posts: 110
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 Longtail bogging down Got a mudbuddy 27hp kawa longtail with 9x7 prop. When you put the prop below the waters surface the motor bogs bad even at full throttle. The motor runs fine out of the water at full throttle. The carb has been cleaned and checked. The gorverner seems to be working. Any ideas as to what is wrong?
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| Thu Dec 01, 2011 11:18 pm |
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indawoods
MMT Pro Member
Joined: Fri Sep 23, 2011 3:32 am
Posts: 287
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Re: Longtail bogging down sounds like firing on one cylinder or starving for fuel. check spark both sides, then fuel flow/ pour gas directly in carb under load. fuel line may be restricted/fuel pump etc..
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| Fri Dec 02, 2011 1:34 am |
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brandon327
MMT Pro Member
Joined: Sun Nov 08, 2009 4:38 pm
Posts: 110
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Re: Longtail bogging down Fuel pump is what i was thinking. I has an electric fuel pump. It just puzzle me as the only time it does it is when it is under a load. I can run it full throttle out of the water and it runs great.
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| Fri Dec 02, 2011 8:03 am |
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bayoumonster
MMT Member
Joined: Mon Oct 31, 2011 8:26 pm
Posts: 27
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Re: Longtail bogging down The symptom you describe is classic for running on one cylinder. I'd check for spark first.
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| Fri Dec 02, 2011 9:21 am |
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backwater86
MMT Pro Member
Joined: Fri Dec 10, 2010 5:10 pm
Posts: 108
Location: Mechanical Tech
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Re: Longtail bogging down Do you have a OMC style hose connection from the hose to gas tank? They SUCK!! remove and get a parker hose barb and run the fuel line directly to the gas tank
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| Fri Dec 02, 2011 11:04 am |
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Rem man
MMT Pro Member
Joined: Sun Sep 19, 2010 7:49 pm
Posts: 120
Location: Coastal GA
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Re: Longtail bogging down might check your primer bulb to... have seen the inside shredded!!
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| Fri Dec 02, 2011 8:11 pm |
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JGUT
MMT Pro Member
Joined: Sun Jan 16, 2011 6:00 pm
Posts: 58
Location: Kemah, Texas
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Re: Longtail bogging down sounds like you have a bad coil. like others have said only running on one cylinder.
_________________
23HP GO-DEVIL longtail pushing a 1750 Mike Kliebert custom
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| Wed Dec 07, 2011 2:47 pm |
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Strapassasin
MMT Member
Joined: Sat Oct 15, 2011 8:55 pm
Posts: 4
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Re: Longtail bogging down My 27 gdlt did same thing bc of bad coil. Put ur hand on each head while running and see if both are hot. U prob running on one cylinder.
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| Wed Dec 07, 2011 9:12 pm |
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paul91
MMT Member
Joined: Wed Feb 16, 2011 3:26 pm
Posts: 18
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Re: Longtail bogging down I'd been fighting the same problem with my 16 vanguard. While the engine's running, pull each spark plug cap and see if you notice a difference in the amount the engine is bogging down. Mine didn't make a difference when I pulled the left one, but it killed when I pulled the right one. I started checking all the electrical stuff to that cylinder and ended up finding the coil arcing to ground on the engine block. A little silicone on it and it's fixed. Good luck
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| Thu Dec 08, 2011 12:35 am |
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TonyGMcElroy
MMT Addict
Joined: Tue Nov 15, 2011 3:27 pm
Posts: 664
Location: Henderson, Tx
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Re: Longtail bogging down Same thang happen to me but I had a push rod come loose luckily it wasn't bent and we got it goin again in time 2 kiss some woodies
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| Thu Dec 15, 2011 11:55 am |
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critch5
MMT Pro Member
Joined: Tue Dec 13, 2011 2:21 pm
Posts: 75
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Re: Longtail bogging down mine does the same shit but only a single cylinder! any ideas?
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| Thu Dec 15, 2011 3:37 pm |
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critch5
MMT Pro Member
Joined: Tue Dec 13, 2011 2:21 pm
Posts: 75
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Re: Longtail bogging down mine does the same shit but only a single cylinder! any ideas?
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| Thu Dec 15, 2011 3:40 pm |
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Neva_easy87
New Member
Joined: Fri Dec 16, 2011 5:12 pm
Posts: 1
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Re: Longtail bogging down Check the push rods like tonyg said i had the same problems did everything u did then started tearing the motor aprt and found a bent push rod got a new one and it ran perfect
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| Fri Dec 16, 2011 5:43 pm |
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