Carb Problems

masterall · 04-21-2008, 08:25 PM

Hi, I just got a Yamaha G16A 1997 free from a friend and it needed some work, I charged the battery and fixed the fuel pump. However I know fuel is making it too the carb nozzle but from there it seems to stop and I can't find the reason why. when I put a little gas directly into the carb air intake, it starts right up. So I know there is a spark and I have compression but somewhere between where the fuel enters the carb and the cylinder itself something is not right. Anyone have any suggestions?
Thanks

crash12888 · 04-21-2008, 08:39 PM

pull the carb and clean it. I would say the needle is stuck in the seat or the float is stuck.

TheNewGuy · 04-22-2008, 05:13 AM

Yep, I agree, clean the carb.

masterall · 04-22-2008, 06:48 AM

Does the carb come right off by sliding it off the 2 bolts? or are there more holding it in place? I just don't want to snap anything by forcing it out if I am not supposed too.

TheNewGuy · 04-22-2008, 07:47 AM

Yep, 2 bolts. Just be careful with the plastic spacer between the carb and the engine. They crack very easily.

spriddle · 04-22-2008, 12:54 PM

Be sure not to use the carb. as a resting post for your hand either. I almost bought a gross of plastics spacers.

smallblock450sl · 04-22-2008, 07:53 PM

Ron and Spriddle...Not to correct you guy's ( you give to much good advice for me to be a school teacher) but Masteralls' G16 is not like the G2 thru G14 carb manifolds. Masterall...There will be 2 10mm head bolts at the back of the air cleaner box assy, there will be 2 12mm head nuts that hold the air box onto the carberator studs. After air box removed, take off choke cabel and accerator cable, slide carb off studs (there should be a gasket between the air box and carb and one between the carb and plastic manifold , manifold and gasket useually stay in place), Take off float bowl/main jet (this is probably "plugged"-The culprit) the pin that holds the foat on and the jet ontop of the carb. Clean/blow out/reassemble/reinstall. I would also take the "pulser Line" ( the one that runs under the air cleaner assy from the engine block to the fuel pump, and "blow into it" if you feel any "restriction" it can't "drive" the fuel pump with "crank case pressure). Hope this helps make your car "purr" again. Let us know what you find. It WILL help others. Dave

TheNewGuy · 04-23-2008, 05:09 AM

Thanks Dave. I was thinking G2/G9

Sorry masterall.

04-21-2008, 08:25 PM	#1
masterall Not Yet Wild Join Date: Apr 2008 Posts: 2	Carb Problems Hi, I just got a Yamaha G16A 1997 free from a friend and it needed some work, I charged the battery and fixed the fuel pump. However I know fuel is making it too the carb nozzle but from there it seems to stop and I can't find the reason why. when I put a little gas directly into the carb air intake, it starts right up. So I know there is a spark and I have compression but somewhere between where the fuel enters the carb and the cylinder itself something is not right. Anyone have any suggestions? Thanks
masterall Not Yet Wild Join Date: Apr 2008 Posts: 2

04-21-2008, 08:39 PM	#2
crash12888 Gone Crazy Join Date: Jan 2007 Location: Chesterfield, Va Posts: 6,021	Re: Carb Problems pull the carb and clean it. I would say the needle is stuck in the seat or the float is stuck.

04-22-2008, 05:13 AM	#3
TheNewGuy Admin/Moderator Join Date: Dec 2006 Location: Ohio Posts: 18,045	Re: Carb Problems Yep, I agree, clean the carb.
	Ron PLEASE VISIT Our Sponsors * BGW GEAR The Store The G2 Project * Swing Arm Drop & Repair * Geep1 Project

04-22-2008, 06:48 AM	#4
masterall Not Yet Wild Join Date: Apr 2008 Posts: 2	Re: Carb Problems Does the carb come right off by sliding it off the 2 bolts? or are there more holding it in place? I just don't want to snap anything by forcing it out if I am not supposed too.
masterall Not Yet Wild Join Date: Apr 2008 Posts: 2

04-22-2008, 07:47 AM	#5
TheNewGuy Admin/Moderator Join Date: Dec 2006 Location: Ohio Posts: 18,045	Re: Carb Problems Yep, 2 bolts. Just be careful with the plastic spacer between the carb and the engine. They crack very easily.
	Ron PLEASE VISIT Our Sponsors * BGW GEAR The Store The G2 Project * Swing Arm Drop & Repair * Geep1 Project

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04-22-2008, 12:54 PM	#6
spriddle Admin Join Date: Dec 2006 Location: TN Posts: 101,855	Re: Carb Problems Be sure not to use the carb. as a resting post for your hand either. I almost bought a gross of plastics spacers.

04-22-2008, 07:53 PM	#7
smallblock450sl Sometime's............ Join Date: Oct 2007 Location: Tacoma Washington Posts: 11,874	Re: Carb Problems Ron and Spriddle...Not to correct you guy's ( you give to much good advice for me to be a school teacher) but Masteralls' G16 is not like the G2 thru G14 carb manifolds. Masterall...There will be 2 10mm head bolts at the back of the air cleaner box assy, there will be 2 12mm head nuts that hold the air box onto the carberator studs. After air box removed, take off choke cabel and accerator cable, slide carb off studs (there should be a gasket between the air box and carb and one between the carb and plastic manifold , manifold and gasket useually stay in place), Take off float bowl/main jet (this is probably "plugged"-The culprit) the pin that holds the foat on and the jet ontop of the carb. Clean/blow out/reassemble/reinstall. I would also take the "pulser Line" ( the one that runs under the air cleaner assy from the engine block to the fuel pump, and "blow into it" if you feel any "restriction" it can't "drive" the fuel pump with "crank case pressure). Hope this helps make your car "purr" again. Let us know what you find. It WILL help others. Dave Last edited by smallblock450sl; 04-22-2008 at 07:54 PM.. Reason: bad spelling

04-23-2008, 05:09 AM	#8
TheNewGuy Admin/Moderator Join Date: Dec 2006 Location: Ohio Posts: 18,045	Re: Carb Problems Thanks Dave. I was thinking G2/G9 Sorry masterall.
	Ron PLEASE VISIT Our Sponsors * BGW GEAR The Store The G2 Project * Swing Arm Drop & Repair * Geep1 Project

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