nissan 40 carb gum problems

crab bait

Captain
Thread starter
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
Thread starter
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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