nissan 40 carb gum problems

crab bait

Captain
Joined
Feb 5, 2002
Messages
3,831
hi fellers, i'm not on this board much cause mechanics is my down fall.. if'n there's a chance it can be screwed up,, i'll find it.. plus i never have any problems with these nissans..<br /><br />but i do now..!!<br /><br />i'm 99.9% it's a carb gum problem..<br /><br />starts great .. run wot great for 5 minutes than it bogs waaay down an stays there ..( but sometimes sputters an takes off fast/wot again but this is rare )..<br /><br />shut'er down .. fire it back up.. wot bat-outta-hell.. for less then a minute than blogs right down again..<br /><br /> an the cycle continues.. <br /><br />when she's a-boggin',, every thottle setting's a-boggin',too...<br /><br />the fuel filter's whistle clean.. also an after market 'oil filter type' filter/water separater..<br /><br />found a clymer nissan manual an will order it tommorrow.. they are usually half worthless cause they only hold-your-hand half way..<br /><br />what i gettin' at is ,, whats all involved..?? takin' the carbs apart..?? <br /><br />springs an floats an 'jesus clips' go a-flyin'..?? <br /><br />screws/settings/linkages/my lord..<br /><br />an there's THREE of 'um...<br /><br />or do you guys just spray some 'gumout'/tuner somewhere..??..<br /><br />(rockfish/striper opens tommorrow) need to get'er fixed..!!
 

TOHATSU GURU

Admiral
Joined
Jul 22, 2004
Messages
6,164
Re: nissan 40 carb gum problems

Please....take it to a marine dealer to have the carbs cleaned....Please.
 

Navigator

Chief Petty Officer
Joined
Feb 6, 2001
Messages
517
Re: nissan 40 carb gum problems

Crab bait,<br />Before you rip into the Carbs, make sure its not a fuel delivery problem. You said after it shuts down, it will run fine for a bit before it dies once again. When it starts to die down, give the primer bulb a few squeezes. It it smooths out it NOT a carb problem. It could be a blockage in the fuel line, a weak fuel pump, or an air leak in the fuel system.<br /><br />If it were a carb problem, you wouldn't necessarily get the 5 minutes WOT from the get go. It would be a persistant problem.<br /><br />By all means, let's check the obvious before you take a wrench to the carbs :D <br /><br />Nav :cool:
 

crab bait

Captain
Joined
Feb 5, 2002
Messages
3,831
Re: nissan 40 carb gum problems

gee NAV,, your my new bestfriend..!!<br /><br />YOUR NOT GOIN' TO BELIEVE THIS..<br /><br />early this mornin' i took the boat to a mechanic.. i talked him into talking me into it's gummed carbs..<br /><br />said it would be $200 bucks.. do it..<br /><br />so i came home an had to get my 3 hour iboat fix.. saw what you posted.. it hit me ,, the fuelbulb did feel weird.. <br />so i drove 20 miles back an got my boat back ..( he hadn't started on it yet) <br /><br />bought a new bulb an ran it in the river.. runs great as always..<br /><br />THANK BRO... where do i send the payment..?? do you take visa..?? :) ..
 

Navigator

Chief Petty Officer
Joined
Feb 6, 2001
Messages
517
Re: nissan 40 carb gum problems

Crab Bait...<br /><br />No Charge....That's what we are all here for! :D <br />Glad it worked out....<br /><br />Nav :cool:
 
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