has anyone ever had a fuel pump go out on them, i rode all day yesterday got on last night to get home from the bar, turned the key to listen to it power up started it took off down the trail for 50 yards, it died, would not start but turning the key on now it doesnt power up, just makes a real faint buzzing sound? any ideas?
viper "er" fuel pump
- Thread starter hans2003
- Start date
depending on what year viper, there was a service bulletin on the pumps. condensation would occur during riding, freezing a vacuum hole or something, once it thawed or warmed it, good to go! fix was to remove pump and silicone over hole, but its been awhile. i will see if i can dig up more info.
that would be great, its a 2002 er model....
Snowdad is right on!!,02 only,hole in bottom of pump needs to be silicone shut.
Thanks guys i forward it to my mechanic
Easy fix if you are ever stuck at the bar, is to ask the bartender for a pitcher of hot water and dump on the fuel pump... Been there done that!!!
You can also shim the pump up off the tunnel approx 1/4"-5/16". Just unbolt the pump and stack some washers under it.
Problem occurs because the pump is bolted flat to the tunnel, lays in water from the melting snow, then sucks the water in through the hole. Then freezes when the sled sits.
If your sled is piped, I would leave the hole open and shim the pump up. If its stock, dosn't matter, close the hole or shim.
The hole is there for venting on the backside of the diaphragm. With it closed, it could dampen the diaphragm movement slightly. By not allowing the backside pressure/vacuum to vent. This could reduce the max fuel flow rating of the fuel pump. Not an issue with a stock sled, however if your modded up (pipes, porting, large main jets, etc). You'll want that pump to be able to deliver max fuel flow.
Problem occurs because the pump is bolted flat to the tunnel, lays in water from the melting snow, then sucks the water in through the hole. Then freezes when the sled sits.
If your sled is piped, I would leave the hole open and shim the pump up. If its stock, dosn't matter, close the hole or shim.
The hole is there for venting on the backside of the diaphragm. With it closed, it could dampen the diaphragm movement slightly. By not allowing the backside pressure/vacuum to vent. This could reduce the max fuel flow rating of the fuel pump. Not an issue with a stock sled, however if your modded up (pipes, porting, large main jets, etc). You'll want that pump to be able to deliver max fuel flow.
I just have a can on it other then that it is stock
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