1999 yamaha 175pro v cutting out

bingham · 08-03-10, 02:35 AM

My motor is having some issues with life. It cranks and idles normal but when I give it gas it acts like it doesn't want to plane out, it bogs down even at full throttle and won't plane. It's been goin on a while and I've tried to clean fuel and lines and the bulb seems fine. It isn't fuel injected. Also, after it does plane out when I get to full speed it cuts out some but never goes dead. I read the other similar thread but my problems are a little different.please help as much as possible.

bamabassman · 08-03-10, 09:44 PM

hmmmmm, did you change the plugs, check the carb? plug wires? what kind of gas are you using? is it PURE gas or 10 percent corn? all this can make oyur motor bog. other than that, i am sorry i can't help you. hope you get it figured out buddy.

triglet · 08-04-10, 01:14 AM

yeah i would give the plugs a check and see what they look like. They would be able to tell you whether or not you might not be getting enough fuel or if its getting to much. you can also check the plug gap and make sure it hasn't gotten way out of hand just from age! might be causing a spark blowout (which would prolly be rare but hey u never know) also not sure if you have a fuel pump or not. but if it does it could provide enough fuel for the boat to run but not enough fuel for it to make a wide open run out. And if you have someone you can swap line's and bulbs out with for a quick test then u could rule that out without being out any money. hope you get it figured out.

bingham · 08-04-10, 01:57 AM

Weeelll I'm usin corner gas, but new plugs and I've checked the wires. No fuel pump that I know of though

triglet · 08-04-10, 04:32 AM

hmmm.. interesting just out of curiousity when did it start. did u make any changes?? any changes in where u buy gas or after the plugs. have u tried any fuel additives? just picking ur brain a little

edit: haha i just seen where u said it wasnt fuel injected. reading owns me. anyways im with bamabass man on checking the carbs if all the other checks out.

MississippiBoy · 08-04-10, 08:59 AM

Quote:

Originally Posted by bingham

My motor is having some issues with life. It cranks and idles normal but when I give it gas it acts like it doesn't want to plane out, it bogs down even at full throttle and won't plane. It's been goin on a while and I've tried to clean fuel and lines and the bulb seems fine. It isn't fuel injected. Also, after it does plane out when I get to full speed it cuts out some but never goes dead. I read the other similar thread but my problems are a little different.please help as much as possible.

Have you changed the fuel line? Sometimes, an older line will collapse when the motor starts sucking gas, instead of staying open like a new one would. Try having someone else drive the boat while you look at the fuel line, if possible (BE CAREFUL if you do this...). If it flattens out when he hits the gas, you know it's not stiff enough anymore, and needs to be replaced.

riverfisher · 08-04-10, 09:19 AM

I hate to ask but have you done a compression check?

Have you noticed a decline in rpm's at wide open throttle from normal?

lilmule · 08-04-10, 04:12 PM

Lack of compression,considerable carb issues,clean with staybil blue in the gas tank,or your mfg equivilent,lack of gas getting there either pump or hoses or squeeze bulb,whole bunch of can be issues,if not easily found take it to a boat mech.
Have him do a compression check first,if its over 15 lb difference then have it rebuilt.$$$
Hopefully just something you missed and easily fixed thus saving time and $.
On older omc the auto oiler (VRO)which is also a gas pump goes out first,and rather slowly getting to the point eventually where it wont run on plane,meanwhile starving it of gas.
Havnt a clue if the yammer would act the same.

skeeter1804 · 08-04-10, 08:21 PM

If it idles smooth I would guess a fuel delivery problem. If you have a prime bulb have someone keep priming it while trying to get on plane. Sounds like a weak fuel pump or possible carburetor gummed up.

kerryvbc1 · 08-07-10, 07:40 PM

I had the same problem. You said you tried to clean the fuel lines. You need to REPLACE them. $24.00 at Walmart don't try it ,do it. From the tank to the fuel pump.

triglet · 08-08-10, 07:32 PM

ever get it figured out??

08-03-10, 02:35 AM	#1
bingham BassFishin.Com Active Member Join Date: Feb 2009 Location: Cottondale, AL Posts: 323	1999 yamaha 175pro v cutting out My motor is having some issues with life. It cranks and idles normal but when I give it gas it acts like it doesn't want to plane out, it bogs down even at full throttle and won't plane. It's been goin on a while and I've tried to clean fuel and lines and the bulb seems fine. It isn't fuel injected. Also, after it does plane out when I get to full speed it cuts out some but never goes dead. I read the other similar thread but my problems are a little different.please help as much as possible. __________________ EAT, SLEEP, FISH

08-03-10, 09:44 PM	#2
bamabassman BassFishin.Com Premier Elite Join Date: Jan 2008 Location: cedar bluff, alabama Posts: 15,292	hmmmmm, did you change the plugs, check the carb? plug wires? what kind of gas are you using? is it PURE gas or 10 percent corn? all this can make oyur motor bog. other than that, i am sorry i can't help you. hope you get it figured out buddy. __________________ so many lures, so little time.

08-04-10, 01:57 AM	#4
bingham BassFishin.Com Active Member Join Date: Feb 2009 Location: Cottondale, AL Posts: 323	Weeelll I'm usin corner gas, but new plugs and I've checked the wires. No fuel pump that I know of though __________________ EAT, SLEEP, FISH

08-04-10, 04:32 AM	#5
triglet BassFishin.Com Member Join Date: Apr 2010 Posts: 39	hmmm.. interesting just out of curiousity when did it start. did u make any changes?? any changes in where u buy gas or after the plugs. have u tried any fuel additives? just picking ur brain a little edit: haha i just seen where u said it wasnt fuel injected. reading owns me. anyways im with bamabass man on checking the carbs if all the other checks out. Last edited by triglet; 08-04-10 at 04:46 AM.

08-04-10, 04:12 PM	#8
lilmule BassFishin.Com Super Veteran Join Date: Feb 2010 Location: Buchanan,Tn Posts: 2,685	Lack of compression,considerable carb issues,clean with staybil blue in the gas tank,or your mfg equivilent,lack of gas getting there either pump or hoses or squeeze bulb,whole bunch of can be issues,if not easily found take it to a boat mech. Have him do a compression check first,if its over 15 lb difference then have it rebuilt.$$$ Hopefully just something you missed and easily fixed thus saving time and $. On older omc the auto oiler (VRO)which is also a gas pump goes out first,and rather slowly getting to the point eventually where it wont run on plane,meanwhile starving it of gas. Havnt a clue if the yammer would act the same. Last edited by lilmule; 08-04-10 at 04:19 PM.

08-04-10, 01:14 AM	#3
triglet BassFishin.Com Member Join Date: Apr 2010 Posts: 39	yeah i would give the plugs a check and see what they look like. They would be able to tell you whether or not you might not be getting enough fuel or if its getting to much. you can also check the plug gap and make sure it hasn't gotten way out of hand just from age! might be causing a spark blowout (which would prolly be rare but hey u never know) also not sure if you have a fuel pump or not. but if it does it could provide enough fuel for the boat to run but not enough fuel for it to make a wide open run out. And if you have someone you can swap line's and bulbs out with for a quick test then u could rule that out without being out any money. hope you get it figured out.

08-04-10, 09:19 AM	#7
riverfisher BassFishin.Com Member Join Date: Aug 2009 Location: Charlton, New York Posts: 92	I hate to ask but have you done a compression check? Have you noticed a decline in rpm's at wide open throttle from normal?

08-04-10, 08:21 PM	#9
skeeter1804 BassFishin.Com Active Member Join Date: Jun 2010 Location: Edgerton KS Posts: 321	If it idles smooth I would guess a fuel delivery problem. If you have a prime bulb have someone keep priming it while trying to get on plane. Sounds like a weak fuel pump or possible carburetor gummed up.

08-07-10, 07:40 PM	#10
kerryvbc1 BassFishin.Com Member Join Date: Apr 2010 Posts: 5	I had the same problem. You said you tried to clean the fuel lines. You need to REPLACE them. $24.00 at Walmart don't try it ,do it. From the tank to the fuel pump.

08-08-10, 07:32 PM	#11
triglet BassFishin.Com Member Join Date: Apr 2010 Posts: 39	ever get it figured out??

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