ShawnP1980
Veteran
Ok so im confused here I went to start the sled yesterday and all it did was crank and crank and no start so I figured it's been sitting for awhile I will put a bit of fuel in the carbs it only burns what I put in carbs I also blew in the vent tube to help push air though still nothing, I poked around and noticed I have fuel from the tank linnes to the pumps but nothing coming out the pumps to the bottom of the carbs.
What is or can be the cause of this??
What is or can be the cause of this??
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2011 apex xtx
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1997 et410t/r
1988 vk 540
with the line off of the pumps, when you pressurize it through the vent line, does gas come out of the outlets on the pumps?
ShawnP1980
Veteran
No fuel comes out of outlets when pressurizing through the vent I even tried putting original pumps back on still nothing,
- Joined
- Jun 1, 2004
- Messages
- 7,734
- Location
- sudbury on
- Country
- Canada
- Snowmobile
- 2016 apex xtx
2011 apex xtx
2009 phaser rtx/x
1997 et410t/r
1988 vk 540
have you tried with turning the engine over while they are disconnected?
ShawnP1980
Veteran
I have fuel to the pumps but seems nothing is going through the pumps to the outlet side of pumps, I've disconnected the outlet side and crank the engine over there's no fuel coming out of outlet side at all. I removed the vacuum hose going to the pumps and I do have a pulse when turning the engine over.
Brotherdan
Expert
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- 2011 apex xtx blue, starr suspension,gytr front shocks,camso 1.5 track cut down, snowtrackers work in process,2003 rx1er originally 121 converted to 136"monoshock 2 ck136 rear suspension with clicker vector ltx shock,muffin works tunnel extension, seat concepts(wrp) seat,apex hooked handlebars converted to all underhood wiring,8"lake effect billet aluminum riser,gytr frontshocks,yamaheater hand warmer kit,rocks ridelite,rocks power supply, rocks heated bag,, tunnel braces,blue skid plate,garmin gps, aggressive snowtrackers on apex single keel skis,rollerski ski wheel kit,108 warthog studs&blue studboy backers,pioneer wheel lowering kit, dupont slides, 4th wheel kit,yamaha saddle, tank& windshield bags, powermadd led handguards, bar mount mirror kit, apex radiator& electric fan added, apex rear cooler,autometer temp guage, apex new style large diameter drive shaft with extroverts machined for chaincase,thunder products clutching,1987 enticer 340ltr 2100miles,1984 enticer 340,1996 wolverine 350,big wheel kit,winch,racks,k&n,full skidplates
Take the feed lines off from the pump to carb,use a small funnel to pour gas in the lines.reattach,then using a spray bottle,remove airbox cover &spray some fuel into carb throats,reinstall airbox cover&crank engine.it should start&prime system.mine has always been similar to this after setting a long time&will just turn over,over&never fire without prepriming as described above
ShawnP1980
Veteran
I've tried pouring fuel into the feed lines to the carbs maybe I just didn't poor enough in there, this is something that I will give a shot after work to see if it works.
RobX-1
VIP Member
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Considering what you have done, I'm not sure it's an issue with the pumps not being primed. If it comes to it, you can purchase rebuild kits for these fuel pumps for $10 each as I rebuilt the pumps on my 03 RX-1 along with rebuilding the carbs.
ShawnP1980
Veteran
As I mentioned at the beginning it's doing the same thing with with both sets of pumps, the sled ran when I parked, but I noticed a bit of a hard start issue if it's sat for a few days so I decided to put new pumps, the issue that I'm having now is the same with both pumps new and old lol, maybe it is a priming issue but I've never had this happen with any of my other RX 1
ShawnP1980
Veteran
I also forgot to mention the carbs were cleaned and synchronized.
Brotherdan
Expert
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- 2011 apex xtx blue, starr suspension,gytr front shocks,camso 1.5 track cut down, snowtrackers work in process,2003 rx1er originally 121 converted to 136"monoshock 2 ck136 rear suspension with clicker vector ltx shock,muffin works tunnel extension, seat concepts(wrp) seat,apex hooked handlebars converted to all underhood wiring,8"lake effect billet aluminum riser,gytr frontshocks,yamaheater hand warmer kit,rocks ridelite,rocks power supply, rocks heated bag,, tunnel braces,blue skid plate,garmin gps, aggressive snowtrackers on apex single keel skis,rollerski ski wheel kit,108 warthog studs&blue studboy backers,pioneer wheel lowering kit, dupont slides, 4th wheel kit,yamaha saddle, tank& windshield bags, powermadd led handguards, bar mount mirror kit, apex radiator& electric fan added, apex rear cooler,autometer temp guage, apex new style large diameter drive shaft with extroverts machined for chaincase,thunder products clutching,1987 enticer 340ltr 2100miles,1984 enticer 340,1996 wolverine 350,big wheel kit,winch,racks,k&n,full skidplates
Yeah it seems they pick up fuel really slow,sometimes ive had to leave the airbox cover off &keep spraying fuel in to get it running good&steady
When was sled last running correctly?assuming if carbs were synched it was running fine,was it stored with ethanol fuel?I have found up here in maine the ethanol fuel goes bad in two months time to the point that an engine won't run on it.
ShawnP1980
Veteran
Sled ran great, parked it in garage in March until November and just went to go over everything two weeks ago and no start like mentioned it would just have a hard start once and awhile if it sat for days not running.
Brotherdan
Expert
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- 2011 apex xtx blue, starr suspension,gytr front shocks,camso 1.5 track cut down, snowtrackers work in process,2003 rx1er originally 121 converted to 136"monoshock 2 ck136 rear suspension with clicker vector ltx shock,muffin works tunnel extension, seat concepts(wrp) seat,apex hooked handlebars converted to all underhood wiring,8"lake effect billet aluminum riser,gytr frontshocks,yamaheater hand warmer kit,rocks ridelite,rocks power supply, rocks heated bag,, tunnel braces,blue skid plate,garmin gps, aggressive snowtrackers on apex single keel skis,rollerski ski wheel kit,108 warthog studs&blue studboy backers,pioneer wheel lowering kit, dupont slides, 4th wheel kit,yamaha saddle, tank& windshield bags, powermadd led handguards, bar mount mirror kit, apex radiator& electric fan added, apex rear cooler,autometer temp guage, apex new style large diameter drive shaft with extroverts machined for chaincase,thunder products clutching,1987 enticer 340ltr 2100miles,1984 enticer 340,1996 wolverine 350,big wheel kit,winch,racks,k&n,full skidplates
Was it stored with fuel in it?if so what type of fuel?I know you said carbs were cleaned,when was this?
ShawnP1980
Veteran
It was stored with a quarter tank of premium fuel non ethanol, carbs were cleaned and gone over maybe a month ago put it back together couple days ago went to start it and no fuel going through the pumps
RobX-1
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Since you've replaced the fuel pumps and are sure they are working, what happens when you disconnect the fuel lines going to the pumps and lightly pressurize the fuel tank? Does fuel come out the fuel lines? I know you did a similar test where you disconnected the fuel lines coming out of the pumps and no fuel came out pump outlets but just to eliminate the pumps, I'd be curious if the two fuel filters inside the tank are plugged and/or need replaced. Although I did replace mine when rebuilding the pumps and carbs, I only did so because I wanted to replace everything from the tank to the carbs and did not have an issue with fuel being plugged by the filters but might be something to check.
